ОКСИД АЛЮМИНИЯ, ЛЮМИНОФОРЫ И СМЕШАННЫЕ СОЕДИНЕНИЯ И СООТВЕТСТВУЮЩИЕ СПОСОБЫ ПРИГОТОВЛЕНИЯ

Изобретение относится к неорганической химии и может быть использовано при получении люминофоров для покрытий флуоресцентных ламп. Гамма оксид алюминия, полученный из квасцов, в количестве 85%-95% по массе смешивают с 0,4%-1,8% по массе спекающего агента - NHF и 2,5%-13% по массе зародышей альфа оксида алюминия. Смесь прокаливают в печи при температуре от 1150°С до 1400°С в течение 1-6 часов, измельчают 16 часов в шаровой мельнице с размалывающими шарами из оксида алюминия, количество которых по меньшей мере в двадцать раз превышает количество прокаленной смеси. Диаметр размалывающих шаров из оксида алюминия от 3 см до 5 см. Измельченную смесь просеивают через сетку, изготовленную из незагрязняющего материала, с размером ячеек от 150 мкм до 250 мкм. Полученный альфа оксид алюминия состоит главным образом из частиц размером dот 0,3 мкм до 2 мкм в основном сферической формы, что позволяет оптимизировать излучающие свойства флуоресцентного слоя. 5 з.п. ф-лы, 4 ил., 7 пр.

СПОСОБ ИДЕНТИФИКАЦИИ ОБЪЕКТА

... 1. Способ идентификации объекта, в котором объект содержит защитный элемент, который содержит один или несколько неорганических люминесцентных пигментов, чей спектр испускания/спектры испускания изменяются как функция энергии возбуждения электромагнитного излучения, температуры, времени после действия импульса возбуждения или давления окружающей среды,причем способ включает в себя стадии:- генерирования по меньшей мере 2 спектров испускания люминесцентного пигмента, причем эти спектры могут быть получены с помощью импульсов возбуждения, которые отличаются друг от друга, и/или как функция времени, т.е. интервалов времени от действия импульса возбуждения и/или изменения давления окружающей среды;- сравнения полученного спектра испускания со спектром, заранее определенным для люминесцентного пигмента (пигментов).2. Способ по п.1, отличающийся тем, что люминесцентный пигмент представляет собой неорганическое твердотельное соединение, которое содержит один или несколько люминесцентных ионов ...

PHOSPHORESZIERENDE THERMOPLASTISCHE MASSE

Ladungskompensierte Nitridleuchtstoffe und deren Verwendung

Verwendung eines Leuchtstoffmaterials zum Emittieren von weißem Licht, umfassend: eine Lichtquelle, die Strahlung mit einem Peak bei 250 nm bis 550 nm emittiert, und ein Leuchtstoffmaterial, das mittels Strahlung mit der Lichtquelle verbunden ist, wobei das Leuchtstoffmaterial wenigstens eines von Ca1-a-bCeaEubAl1+aSi1-aN3, worin 0 < a ≤ 0,2, 0 ≤ b ≤ 0,2; Ca1-c-dCecEudAl1-c(Mg, Zn)cSiN3, worin 0 < c ≤ 0,2, 0 ≤ d ≤ 0,2; Ca1-2e-fCee(Li, Na)eEufAlSiN3, worin 0 < e ≤ 0,2, 0 ≤ f ≤ 0,2, e + f > 0; oder Ca1-g-h-iCeg(Li, Na)hEulAl1+g-hSi1-g+hN3, worin 0 ≤ g ≤ 0,2, 0 < h ≤ 0,4, 0 ≤ i ≤ 0,2, g + i > 0, umfasst.

Innenbeleuchtungsvorrichtung - selbstemittierende Lichttechnik

Lichtquelle (5), umfassend ein persistentes Leuchtmaterial (9), das in der Lage ist, Energie zu absorbieren, die zeitverzögert in Form von Licht nach der Energieabsorption freigesetzt wird, gekennzeichnet dadurch, dass die Lichtquelle (5) eine Innenbeleuchtungsvorrichtung (7) ist.

PHOTOSTIMULIERBARER PHOSPHOR

KUPFER-ERDALKALISILICAT-MISCHKRISTALL-LEUCHTSTOFFE

Photoluminescent markers

RED LIGHT EMISSION LUMINESZIERENDE OXYNITRIDMATERIALIEN

SILICATHALTIGER PHOSPHOR, ITS PRODUCTION AND OF IT USE MAKING SHINING DEVICE

LUMINESZIERENDES MATERIAL

This invention relates to luminescent materials for ultraviolet light or visible light excitation containing lead and/or copper doped chemical compounds. The luminescent material is composed of one or more than one compounds of aluminate type, silicate type, antimonate type, germanate/or germanate-silicate type, and/or phosphate type. Accordingly, the present invention is a good possibility to substitute earth alkaline ions by lead and copper for a shifting of the emission bands to longer or shorter wave length, respectively. Luminescent compounds containing copper and/or lead with improved luminescent properties and also with improved stability against water, humidity as well as other polar solvents are provided. The present invention is to provide lead and/or copper doped luminescent compounds, which has high color temperature range about 2,000K to 8,000K or 10,000K and CRI over 90.

LUMINESZIERENDES MATERIAL

This invention relates to luminescent materials for ultraviolet light or visible light excitation containing lead and/or copper doped chemical compounds. The luminescent material is composed of one or more than one compounds of aluminate type, silicate type, antimonate type, germanate/or germanate-silicate type, and/or phosphate type. Accordingly, the present invention is a good possibility to substitute earth alkaline ions by lead and copper for a shifting of the emission bands to longer or shorter wave length, respectively. Luminescent compounds containing copper and/or lead with improved luminescent properties and also with improved stability against water, humidity as well as other polar solvents are provided. The present invention is to provide lead and/or copper doped luminescent compounds, which has high color temperature range about 2,000K to 8,000K or 10,000K and CRI over 90.

LIGHTING INSTALLATION WITH RADIATION SOURCE AND FLUORESCENT MATERIAL

LICHTAUFNAHME MATERIALEN AND FISHING TACKLE WITH THIS MATERIALEN

LICHTEMITIERENDES MATERIAL AND METHOD FOR THE PRODUCTION OF THE SAME

BY RARE RD ELEMENTS ACTIVATE-CASH PHOTO LUMINESCENCE PIGMENT OUT ERDALKALIALUMINATSILICAT

PHOSPHORESCING THERMOPLASTIC MASS

NANO-PARTICLE SYNTHESIS

LIGHT EMITTING DEVICE, PHOSPHOR AND METHOD FOR PREPARING PHOSPHOR

Phosphorescent/fluorescent compositions and methods

White light emitting diode (LED) lighting device

An alternating current (AC) white LED lighting device and the manufacture method thereof are provided. The AC white LED lighting device consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70wt%:30-90wt%. Because of using afterglow luminescence materials, the light will be sustained when excitation light disappears, which can eliminate the influence of LED chips light output variation due to alternating current fluctuation on the illumination device. And the problem of the heating of the chips also can be overcome. At the same time, the influence of temperature quenching effect and direction change of AC current on the AC white LED lighting device is eliminated.

Multi-doped lutetium based oxyorthosilicate scintillators having improved photonic properties

The present invention relates to a set of multi-doped cerium-activated scintillation materials of the solid solutions on the basis of the rare earth silicate, comprising lutetium and having compositions represented by the chemical formulas: (Lu ...

NOVEL MATERIALS USED FOR EMITTING LIGHT

An luminescent composition comprises a mixture of two or more materials, emitting electromagnetic radiation when subject to stimuli, wherein the spectral emission is not calculable at a first approximation as the simple weighted sum of the spectral emissions of the materials independently subject to said stimuli. Especially advantageous compositions are achieved if the anionic matrix is an oxide and the doping anionic salt is a fluoride or vice versa.

LIGHT EMITTING DEVICE

DAYLIGHT/NIGHTGLOW COLORED PHOSPHORESCENT PLASTIC COMPOSITIONS AND ARTICLES

LOW-PRESSURE MERCURY VAPOUR DISCHARGE LAMP

PHN. 8875C. Low-pressure mercury vapour discharge lamps provided with a luminescent layer, the power consumed being relatively high. Lamps are provided being loaded by at least 500 W per m2 surface area of the luminescent layer. Furthermore lamps are provided having a nominal length of 60 to 150 cm and consuming a nominal power of 0.25 to 0.50 W per cm length of the discharge tube. The luminescent layer contains a luminescent material which has the property of having at 254 nm-excitation a luminous flux which, after the material has been subjected for 15 minutes to ultraviolet radiation of a wavelength of mainly 185 and 254 nm and a radiation density between 150 and 500 W/m2 and a ratio of 185 nm power to 254 nm power between 0.20 and 0.40, is not more than 5% lower than the initial luminous flux of the material also at 254 nm excitation and measured under identical circumstances. The combination of cations in the luminescent material has an electronegativity of not more than 1.4.

SCOTOPIC AFER-GLOW LAMP

A scotopic after-glow lamp for maximizing an eye's ability to see under low light conditions is provided. The scotopic after-glow lamp comprises a non-uniform scotopic phosphor blend of scotopic enhanced phosphors and after-glow phosphors. A method for constructing a scotopic after-glow lamp for use in an electric lamp is also provided. The method comprises combining scotopic enhanced phosphors with after-glow phosphors and layering the combined phosphors on the lamp wall with at least a portion of the after- glow phosphors being against the lamp wall and at least a portion of the scotopic phosphors being exposed to the electric arc of the lamp. Protective layers, such as aluminum oxide powder, can be added in conjunction with the coating process to reduce the flaking and/or separation of the phosphors from the glass wall of the lamp and each other and enhance and lengthen the useful light production of the lamp as it ages.

LUMINESCENT COMPOSITIONS, METHODS FOR MAKING LUMINESCENT COMPOSITIONS AND INKS INCORPORATING THE SAME

A particulate luminescent composition is disclosed that, when excited by electromagnetic radiation at a first frequency, emits electromagnetic radiation at a second frequency equal to or within 1500 cm'1 of the first frequency. The luminescent composition comprises substantially spherical particles having a weight average particle size of less than about 10 µm and a particle size distribution such that at least about 90 weight percent of the particles are not larger than twice the average particle size.

LIGHT SOURCE

The light source (1) is based on a high-efficiency solid-state laser source (2) of the excitation coherent radiation (3) and a single crystal phosphor (4) which is machined in a form of an optic element for emitted light parameterisation. The single crystal phosphor (4) is produced from a single crystal material on the basis of garnets of the (Ax, Lu1-x)aAlbO12:Cec general formula or from a single crystal material on the basis of perovskite structure of the B1-qAIO3:Dq general formula. The efficient light source (1) shall be utilized e.g. in the automotive industry.

WHITE LIGHT EMITTING DIODE (LED) LIGHTING DEVICE DRIVEN BY PULSE CURRENT

A white LED lighting device is driven by a pulse current, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of blue afterglow luminescence materials A to yellow luminescence materials B is 10-70wt%:30-90wt%. The LED chips of the white LED lighting device are driven by the pulse current. The frequency of the pulse current is not less than 50Hz. Because of using afterglow luminescence materials, the light can be sustained when excitation light disappears, which can eliminate the influence of LED light output variation due to current fluctuation on the illumination. At the same time, the pulse current can make the LED chips at an intermittent work state in order to eliminate the problem of chips heating.

LOW PRESSURE MERCURY STEAMING TLA DUNG LAMP.

Transparent object and its application.

Die vorliegende Erfindung betrifft ein lichtdurchlässiges Objekt bestehend aus einem phosphoreszierenden Material. Das phosphoreszierende Material besteht aus wenigstens einem Einkristall der folgenden Gruppe: Eu 2+ , Dy 3+ co-dotiertes SrAI 2 O 4 ; Eu 2+ , Dy 3+ co-dotiertes SrAI 4 O 7 ; Eu 2+ , Dy 3+ co-dotiertes SrAl 12 O 19 ; Eu 2+ , Nd 3+ co-dotiertes CaAI 2 O 4 ; Eu 2+ dotiertes SrAI 2 O 4 ; Eu 2+ dotiertes CaAI 2 O 4 ; Eu 2+ , Dy 3+ co-dotiertes Sr 1 -x Ca x AI 2 O 4 mit x im Bereich zwischen 0 und 1,00; Eu 2+ , Dy 3+ co-dotiertes Sr 2 SiO 4 ; Eu 2+ , Dy 3+ co-dotiertes (Sr l -u Ba u ) 2 SiO 4 mit u im Bereich zwischen 0 und 1,00; Cr 3+ dotiertes ZnGa 2 O 4 ; Pr 3+ dotiertes NaNbO 3 ; Pr 3+ , Lu 3+ co-dotiertes NaNbO 3 ; Pr 3+ , Nd 3+ co-dotiertes YPO 4 . Weiter betrifft die vorliegende Erfindung die Verwendung des lichtdurchlässigen Objektes als phosphoreszierendes Ornament, phosphoreszierendes dekoratives Objekt oder als phosphoreszierende Anzeigevorrichtung in einem Messinstrument ...

Method of forming an afterglowing fluorescent or phosphorescent object, object with this capacity and application of such object.

Die vorliegende Erfindung betrifft ein Verfahren zur Bildung eines Objektes, das gleichzeitig lichtdurchlässig, mechanisch stabil und langlebig nachleuchtend ist. Einkristalline Materialien wie SrAI 2 O 4 :Eu 2+ ,Dy 3+ oder CaAI 2 O 4 :Eu 2+ +, Nd 3+ werden in nachleuchtenden Objekten, insbesondere in Messinstrumenten oder Uhren, zum Beispiel als Zeiger, Indizes, Markierungen, Zifferblätter oder strukturierte Ornamente verwendet.

Composite material for producing a luminescent object with such a material and use this object.

Die vorliegende Erfindung betrifft einen Verbundwerkstoff für die Herstellung von lumineszierenden Objekten bestehend aus mindestens einem lumineszierenden und einem transparenten passiven Volumenmaterial, wobei lumineszierende Einkristalle mit einer transparenten Glasmatrix verbunden sind. Die Erfindung betrifft ebenfalls ein Objekt, das aus entsprechenden Verbundwerkstoffen mit lumineszierenden Elementen besteht. Die Erfindung betrifft zusätzlich Verwendungen der Objekte, die aus ganz oder teilweise transparenten lumineszierenden Verbundwerkstoffen bestehen. Besonders bevorzugte Objekte bestehen aus Verbundwerkstoffen mit mindestens zwei Bestandteilen mit unterschiedlichen chemischen Zusammensetzungen: mindestens ein lumineszierender Einkristall und eine transparente Glasmatrix, durch die das einkristalline Material angeregt und die dabei emittierte Lumineszenz beobachtet wird, wobei der(die) Einkristall(e) in die Glasmatrix eingebettet ist(sind). Des Weiteren besteht der Verbundwerkstoff ...

СПОСОБ ИЗВЛЕЧЕНИЯ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ ИЗ ТВЕРДОЙ СМЕСИ, СОДЕРЖАЩЕЙ ГАЛОФОСФАТ И СОЕДИНЕНИЕ ОДНОГО ИЛИ НЕСКОЛЬКИХ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ

Способ согласно изобретению извлечения редкоземельных элементов из твердой смеси, содержащей галофосфат и по меньшей мере одно соединение одного или нескольких редкоземельных элементов, включает: (а) кислотное травление смеси; (b) добавление основания, чтобы повысить рН до значения по меньшей мере 1,5; (с) воздействие на твердую фазу, полученную на этапе (b), раствором гидроксида натрия или гидроксида калия; (d) кислотное травление твердой фазы с этапа (с) до получения рН ниже 7, в результате чего получают твердую фазу и жидкую фазу, содержащую по меньшей мере одну соль редкоземельного элемента, и отделяют твердую фазу от жидкой фазы.

СПОСОБ ИЗВЛЕЧЕНИЯ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ ИЗ ТВЕРДОЙ СМЕСИ, СОДЕРЖАЩЕЙ ГАЛОФОСФАТ И СОЕДИНЕНИЕ ОДНОГО ИЛИ НЕСКОЛЬКИХ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ

Способ согласно изобретению извлечения редкоземельных элементов из твердой смеси, содержащей галофосфат и по меньшей мере одно соединение одного или нескольких редкоземельных элементов, включает: (а) кислотное травление смеси; (b) добавление основания, чтобы повысить рН до значения по меньшей мере 1,5; (с) воздействие на твердую фазу, полученную на этапе (b), раствором гидроксида натрия или гидроксида калия; (d) кислотное травление твердой фазы с этапа (с) до получения рН ниже 7, в результате чего получают твердую фазу и жидкую фазу, содержащую по меньшей мере одну соль редкоземельного элемента, и отделяют твердую фазу от жидкой фазы.

multilegirovannyeoksiortosilikatnye scintillators based on lutetium, with improved photon properties

Phosporescent polycarbonate, concentrate and molded articles

Process for operating an incoherently emitting radiation source

The wavelength converting element and the light-emitting device

Alpha-Sialon phosphor

Phosphor and light-emitting device

LUMINESCENT SUBSTANCE HAVING AN ARRAY OF SILICATE-ALKALINE EARTH METAL ALUMINATE, LUMINESCENT SCREEN WITH SUCH A SUBSTANCE AND DISCHARGE LAMP PROVIDED WITH A SCREEN

LUMINESCENT SUBSTANCE HAVING AN ARRAY OF SILICATE-ALKALINE EARTH METAL ALUMINATE, LUMINESCENT SCREEN WITH SUCH A SUBSTANCE AND DISCHARGE LAMP PROVIDED WITH A SCREEN

A LUMINESCENT PHOTOVOLTAIC GENERATOR AND A WAVEGUIDE FOR USE IN A PHOTOVOLTAIC GENERATOR

ALLOY POWDER FOR AW MATERIAL OF INORGANIC FUNCTIONAL MATERIAL AND PHOSPHOR

LUMINESCENT MATERIAL EMPLOYING COMPOUND CONTAINING LEAD AND/OR COPPER AND HAVING RARE EARTH ELEMENT COMPONENT

PURPOSE: Provided is a luminescent material for the UV or visible ray excitation which has a wide range of color temperature, an excellent color rendition and the strong resistance against water, moisture and a polar solvent. CONSTITUTION: The luminescent material has a component of a rare earth element, and contains a compound containing lead and/or copper. Preferably the compound comprises an aluminate represented by a(M'O)·b(M''2O)·c(M''X)·dAl2O3·e(M'''O)·f(M''''2O3)· g(M'''''oOp)·h(M''''''xOy), wherein M' is at least one selected from Pb and Cu; M'' is at least one selected from Li, Na, K, Rb, Cs, Au and Ag; M''' is at least one selected from Be, Mg, Ca, Sr, Ba, Zn, Cd and Mn; M'''' is at least one selected from Sc, B, Ga and In; M''''' is at least one selected from Si, Ge, Ti, Zr, Mn, V, Nb, Ta, W and Mo; M'''''' is at least one selected from Bi, Sn, Sb, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; X is at least one selected from F, Cl, Br and I; and 0 Подробнее

LIGHT EMITTING DEVICE

A light emitting device can include a substrate, electrodes provided on the substrate, a light emitting diode configured to emit light, the light emitting diode being provided on one of the electrodes, phosphors configured to change a wavelength of the light, and an electrically conductive device configured to connect the light emitting diode with another of the plurality of electrodes. T he phosphors can substantially cove at least a portion of the light emitting diode. The phosphor may include aluminate type compounds, lead and/or copper doped silicates, lead and/or copper doped antimonates, lead and/or copper doped germanates, lead and/or copper doped germanate- silicates, lead and/or copper doped phosphates, or any combination thereof.

LUMINESCENT SUBSTANCES HAVING EU2+-DOPED SILICATE LUMINOPHORES

Exemplary embodiments of the present invention disclose inorganic luminescent substances with Eu2+-doped silicate luminophores, in which solid solutions in the form of mixed phases between alkaline earth metal oxyorthosilicates and rare earth metal oxyorthosilicates are used as base lattices for the Eu2+ activation leading to the luminescence. These luminophores are described by the general formula (l-x)MII3SiO5-xSE2SiO5:Eu, in which MII preferably represents strontium ion or another alkaline earth metal ion, or another divalent metal ion selected from the group consisting of the magnesium, calcium, barium, copper, zinc, and manganese. These ions may be used in addition to strontium and also as mixtures with one another.

RARE EARTH DOPED LUMINESCENT MATERIAL

A luminescent material includes an aluminate phosphor of formula (I) A1+xMg1+yAl10+zO17+x+y+i.5z : Eu2+, R3+, where 0 ≤x ≤ 0.4, 0 ≤ y ≤1 and 0 ≤ z ≤ 0.2. A is selected from Ca, Ba, and Sr and combinations thereof. The aluminate phosphor is doped with a rare earth ion (R3+), which exists in stable multi- valence states in the luminescent material. R3+ is selected from the group consisting of Sm3+, Yb3+, Tm3+, Ce3+, Tb3+, Pr3+ and combinations thereof. Phosphors of formula (I) may be blended with other blue, yellow, orange, green, and red phosphors to yield white light phosphor blends. A lighting apparatus including such a luminescent material is also presented. The light apparatus includes a light source in addition to the luminescent material.

DAYLIGHT/NIGHTGLOW COLORED PHOSPHORESCENT PLASTIC COMPOSITIONS AND ARTICLES

L'invention se rapporte à des compositions et à des articles plastiques phosphorescents qui en sont obtenus par moulage, extrusion ou formage et qui contiennent des pigments au phosphore phosphorescents non radioactifs et non sulfurés émettant de la lumière dans le spectre visible, de préférence des pigments au phosphore phosphorescents renfermant un aluminate d'oxyde métallique activé à l'europium, et de préférence en combinaison avec des colorants fluorescents à la lumière du jour solubles dans un polymère, dans des résines translucides ou transparentes. Les articles plastiques obtenus à partir des compositions de l'invention ont une couleur fluorescente particulièrement riche, attrayante, claire, et brillante à la lumière du jour, ainsi qu'une forte luminescence de longue durée dans l'obscurité ayant une couleur semblable à celle de la lumière du jour.

LIGHT-CONVERTING MATERIAL AND A COMPOSITION FOR THE PRODUCTION THEREOF

Изобретение относится к светопоглощающим композиционным материалам, в частности, к светопреобразующему материалу, который может быть использован в сельском хозяйстве, медицине, биотехнологии и легкой промышленности. Светопреобразующий материал, содержащит матрицу и по меньшей мере одно композитное соединение редкоземельного элемента формулы: Mex aAy bRz c, где x>l,0>y>0,0; а, b, с- заряд иона Me, А и R , с размером частиц от 10 до 1000 нм. Композиция для получения светопреобразующего материала содержит матрицу и указанное композитное соединение редкоземельного элемента с размером частиц от 10 до 1000 нм в количестве 0,0001-10,0 мac.%. В качестве матрицы может быть использован полимер в виде пленки, волокна или вещество в виде лака, крема, клея. Предложенный светопреобразующий материал обеспечивает повышенную яркость свечения при низком расходе соединения редкоземельного элемента в интервале 0,0001-10 % от массы материала.

NIR EMITTERS EXCITABLE IN THE VISIBLE SPECTRAL RANGE AND THEIR APPLICATION IN BIOCHEMICAL AND MEDICAL IMAGING

This invention concerns the application of inorganic luminescent nanoscale particles, which exhibit optical transitions in the visible spectral range, which can be exploited for excitation purposes and which show an emission band or lines in the NIR range, preferably between 650 and 1100 nm. These nanoscale particles are eventually coated by SiO 2 or other inert oxides, e.g. Al2O3, in order to decrease toxicity and to enhance particle lifetime in living systems.

PHOSPHORESCENCE EXHIBITING PHOSPHOR AND PROCESS FOR PRODUCING THE SAME

A phosphorescence exhibiting phosphor that upon the passage of a prolonged period of time after excitation, has an afterglow luminance property superior to that of conventional strontium aluminate base phosphorescence exhibiting phosphors of the same type, the phosphorescence exhibiting phosphor satisfying the relationships of proportion: 0.005≤Eu/(Sr+Ba+Eu+Dy)≤0.02, 1 Подробнее

PHOSPHORESCENT THERMOPLASTIC COMPOSITION

Polymer composition comprising 50-99% by weight of a thermoplastic resin or a blend of thermoplastic resins, 1-50% by weight of a graft copolymer comprising a rubbery graft base upon which one or more monomers have been grafted, the quantities of (a) and (b) being calculated with respect to the sum of (a) and (b) taken together; and a phosphorescent pigment with an aluminate matrix expressed by M-Al, in which M is at least one metal element selected from calcium, strontium and barium and Al represents an aluminate group. The aluminate group can be for example a Al2O4-group. The invention also relates to concentrates that are suitable for making the polymer composition of the invention.

Phosphor and cathode-ray tube using the same

Disclosed are terbium-activated oxide phosphors having incorporated, at least one of ytterbium, thulium, samarium and europium. Incorporation of the element (s) has made it possible to produce phosphors exhibiting high brightness and suffering little brightness deterioration under high-density electron bombardment.

Visual display system comprising epitaxial terbium-activated garnet material

A novel epitaxial phosphor having high luminosity at about 540 nm has the composition (Y3-x-yTbxREy)(Al5-wGaw)O12, with RE being one (or more) 4f-type rare earth(s) other than Tb, 0.09 Подробнее

WAVELENGTH-SHIFT COMPOSITE LIGHT-STORING POWDER AND METHOD OF MANUFACTURING AND APPLYING THE SAME

A wavelength-shift composite light-storing powder and method of manufacturing and applying the same. Wherein, inorganic metal oxide and light-storing material containing rare earth elements are made to collide at high speed in an environment of extremely low temperature. The collision process makes said inorganic metal oxide to produce fusion reaction on surface of said light-storing material, that causes changes of lattice structure, to generate photon shift phenomenon and produce said wavelength-shift composite light-storing powder. Said composite light-storing powder is apt to engage cross-linked structure of thermoplastic polymer in a high temperature blending process, to achieve even distribution. Finally, through a filament process to produce successfully light-storing fibers capable of emitting lights of various wavelengths, to raise its heat resistance and wash durability. 1. A method of manufacturing a light-storing fiber , comprising following steps: a light-storing material containing rare earth elements; and', 'an inorganic metal oxide forming and fusing on a surface of said light-storing material containing rare earth elements under a high speed gas flow and an environment with extremely low temperature −100 to −196° C.;, 'mixing a plurality of wavelength-shift composite light-storing powders of 1 to 30 wt %, a thermoplastic polymer of 50 to 95 wt %, a ring structure agent having a dipropylene or a tripropylene functional group of 0.05 to 5 wt %, a cross linkage agent of 0.01 to 5 wt %, and a dispersing agent of 0.01 to 5 wt % to form a mixed powder, wherein said plurality of wavelength-shift composite light-storing powders comprisesblending said mixed powder to make said thermoplastic polymer to be melted, and said melted thermoplastic polymer is cross-linked through using said cross linkage agent, such that said wavelength-shift composite light-storing powders are dispersed in said cross-linked thermoplastic polymer;baking and drying said cross-linked ...

ILLIMINATION DEVICE WITH AFTERGLOW CHARACTERISTICS

The invention relates to illumination devices (1) with a light source (2) and an afterglow surface (4) comprising a phosphor. The phosphor has an afterglow emission peak at a temperature above about 100° C. and/or has the formula (Sr1-zMz)4Al14O25:Eu, Ln, Xk with M {Ca, Ba, Mg}, Ln {Dy, Nd}, X {Yb, Tm, Sm}.

IMPROVEMENTS TO PHOSPHORS

METHOD FOR RECOVERING RARE EARTH ELEMENTS FROM A SOLID MIXTURE CONTAINING A HALOPHOSPHATE AND A COMPOUND OF ONE OR MORE RARE EARTH ELEMENTS

LUMINOUS TILE AND PREPARING METHOD THEREOF

Phosphor for vacuum ultraviolet excited light emitting device

A phosphor for a vacuum ultraviolet excited light emitting device, obtainable by adding Eu or Tb as an activating agent to a substrate comprising a compound represented by the general formula M1M2M3O4, wherein M1 represents at least one elements selected from Na and Li, M2 represents at least one elements selected from Gd and Y, and M3 represents at least one elements selected from Ge and Si.

Multi-layer faceted luminescent screens

光発電装置及び光発電装置で使用する導波路

HIGHLY INTENSE STRESS-LUMINESCENT MATERIAL EMITTING ULTRAVIOLET RAY, ITS MANUFACTURING METHOD, AND ITS USE

PROBLEM TO BE SOLVED: To provide a luminescent material that has a characteristic crystal structure and emits intense light. SOLUTION: The stress-luminescent material has a structure where an alkali metal ion and an alkaline earth metal ion are inserted in a matrix structure constituted of molecules having a polyhedral structure and a part thereof is replaced by an ion of either one of rare earth metals, transition metals, group III metals and group IV metals. The stress-luminescent material has a triclinic, tetragonal or trigonal structure and emits ultraviolet rays. COPYRIGHT: (C)2007,JPO&INPIT ...

ФОСФОР, ЛЮМИНЕСЦЕНТНАЯ СМЕСЬ И ЛЮМИНЕСЦЕНТНЫЙ МАТЕРИАЛ

Изобретения могут быть использованы при изготовлении светодиодов. Фосфор, люминесцентный материал и люминесцентная смесь для прямо возбуждаемых переменным током светодиодных чипов включают люминесцентный материал А с синим послесвечением и желтый люминесцентный материал В в массовом отношении (10-70):(30-90). Люминесцентный материал А является по меньшей мере одним из SrAlO:Eu,Dy; SrMgSiO:Eu,Dy; CaS:Bi,Na; CaS:Cu,Naили CaSrS:Bi. Люминесцентный материал В является по меньшей мере одним из YO⋅AlO⋅SiO:Ce⋅B⋅Na⋅P; YOS:Mg,Ti; SrSiO:Eu,Dy; CaMgSiO:Eu,Dy; CaS:Sm; YAG:Ce или TbAlO:Ce. Люминесцентные материалы А и В просеяны на сите с размером ячейки 500 меш. Светодиодные чипы являются синими с длиной волны излучения 460 нм, фиолетовыми с длиной волны излучения 400 нм или ультрафиолетовыми с длиной волны излучения 365 нм. Изобретения обеспечивают стабильность люминесценции при небольшом ослаблении света. 5 н. и 5 з.п. ф-лы, 5 ил., 3 табл., 18 пр.

СИЛИКАТ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ В НАНОАМОРФНОМ СОСТОЯНИИ

Изобретение может быть использовано для визуализации света ультрафиолетового диапазона в системах светодиодов белого света (WLED) и оптических дисплеях. Люминофор синего свечения представляет собой силикат редкоземельных элементов в наноаморфном состоянии состава CaGdEuSiO, где 0,001≤х≤0,5, характеризующийся широкой полосой синего излучения с максимумом при 455 нм, полушириной 77 нм, интенсивностью 14000-14263 отн. ед. и узкой линией красного излучения с максимумом при 615 нм с интенсивностью 400-416 отн. ед. 3 пр.

Фотостимулируемое люминесцентное соединение

Изобретение относится к химической промышленности и может быть использовано для визуального контроля подлинности в составе маркировки ценного документа, представляющего собой банкноту, бланк ценной бумаги, этикетку, акцизную и почтовую марку, платежный и идентификационный документ, а также паспорт и проездной документ. Люминесцентное соединение обладает эффектом фотостимулируемой люминесценции, заключающимся в появлении после снятия возбуждающего излучения в диапазоне длин волн 250-450 нм визуально наблюдаемого свечения в пространственной области воздействия стимулирующего излучения длиной волны 700-1600 нм, длительность затухания которого после прекращения стимулирующего излучения составляет 0,1-10 с. Люминесцентное соединение представляет собой порошок со средним размером частиц 0,1-50 мкм и имеет химический состав, соответствующий эмпирической формуле (Sr1-x-y-z-wEuxDyyLnzMew)4Al14O25 или (Sr1-x-y-z-wEuxDyyLnzMew)Al2O4, где Ln – элемент из ряда Tm, Lu; Ме – элемент из ряда Mg, Ca, Er ...

СВЕТОИЗЛУЧАЮЩЕЕ УСТРОЙСТВО

Светоизлучающее устройство содержит, по меньшей мере, один светодиод, выполненный с возможностью излучения света, люминофор, выполненный с возможностью изменения длины волны света, причем люминофор, по существу, покрывает, по меньшей мере, участок светодиода, при этом люминофор включает в себя свинец и/или медь и редкоземельный элемент и/или другой люминесцентный ион. Люминофор может включать в себя соединения типа алюмината, силикатов, легированных свинцом и/или медью, антимонатов, легированных свинцом и/или медью, германатов, легированных свинцом и/или медью, германатов-силикатов, легированных свинцом и/или медью, фосфатов, легированных свинцом и/или медью, или любые их комбинации. Изобретение обеспечивает получение светоизлучающего устройства, позволяющего обеспечить широкий диапазон цветовой температуры от приблизительно 2000 К до приблизительно 8000 К или приблизительно 10000 К, и/или индекс цветопередачи больше приблизительно 90, а также создать светоизлучающие устройства с улучшенными ...

УСОВЕРШЕНСТВОВАННАЯ ЛАМПА

Изобретение относится к области светотехники. Техническим результатом является снижение стоимости лампы и обеспечение освещения при обесточивании всего осветительного оборудования. Лампа имеет источник света и стеклянный носитель в виде колбы, лампы накаливания или стеклянной трубки люминесцентной лампы. Стеклянный носитель покрыт двумя слоями люминесцирующего продукта, первый из которых имеет пигменты SrAl2О4:EuDy и ZnS, а второй слой содержит (SrCaBa Mg)5(РО4)3 Cl: Eu. Люминесцирующие продукты могут быть нанесены на внутреннюю поверхность стеклянного носителя. Время возбуждения люминесцирующего продукта может быть не более 10 мин, а время излучения более 60 мин. 2 з.п. ф-лы, 3 ил.

Биомедицинский материал для диагностики патологий в биологических тканях

Изобретение относится к способам диагностики патологий в биологических тканях. Предложен биомедицинский материал для диагностики патологий в биологических тканях, содержащий наноразмерный апконверсионный люминофор и органическую добавку, причем в качестве апконверсионного люминофора он содержит наноаморфный сложный силикат редкоземельных элементов состава SrYYbErSiO⋅(8,5–10% мас.), а в качестве органической добавки – диметилглицеролаты кремния состава (CH)Si(CHO)⋅xCHO, где 0,25 ≤ х ≤ 0,40, (остальное до 100% мас.). Технический результат: предложенный биомедицинский материал обеспечивает улучшение визуализации патологических клеток биологической ткани за счет усиления свечения красной компоненты излучения. 3 пр.

СВЕТОИЗЛУЧАЮЩЕЕ УСТРОЙСТВО С EU-СОДЕРЖАЩИМ КРИСТАЛЛОФОСФОРОМ

... 1. Светоизлучающее устройство, главным образом СИД, содержащее материал, в котором в спектре возбуждения Eu-содержащего кристаллофосфора при 298 K и 1,013 бар максимальная интенсивность в диапазоне длин волн ≥460 нм и ≤470 нм составляет ≥5% от максимальной интенсивности в диапазоне длин волн ≥220 нм и ≤320 нм, в котором Eu-содержащий кристаллофосфор выбран из группы, состоящей из Ba2(Y1-x-yGdхLuy)2Si4O13:Eu, Ba2(Y1-x-yGdхLuy)2Ge4O13:Eu, Ba:(Y1-x-yGdхLuy)B9O16:Eu, (Ca1-аSrа)3(Y1-w-x-yLuwCaxIny)2Ge3O12:Euz (a, w, x, y=0,0-1,0, z=0,0-0,2) (Ca1-аSrа)3(Y1-w-x-y-zLuyCawInх)2Ge3O12:EuyBiz (a, v, w, x=0,0-1,0, y, z=0,0-0,2) или их смесей. ! 2. Светоизлучающее устройство по п.1, в котором Eu-содержащий кристаллофосфор выбран из группы, состоящей из Ca3Ga2Ge3O12:Eu и Sr3In2Ge3O12:Eu. ! 3. Светоизлучающее устройство по п.1, в котором в спектре испускания Eu-содержащего кристаллофосфора при 298 K и 1,013 бар площадь пика в диапазоне длин волн ≥680 нм и ≤720 нм составляет ≥15% от площади пика в диапазоне ...

ЛЮМИНЕСЦЕНТНЫЙ ФОТОГАЛЬВАНИЧЕСКИЙ ГЕНЕРАТОР И ВОЛНОВОД ДЛЯ ИСПОЛЬЗОВАНИЯ В ФОТОГАЛЬВАНИЧЕСКОМ ГЕНЕРАТОРЕ

... 1. Фотогальванический генератор (1), содержащийфотогальванический элемент (4); иволновод, содержащий прозрачную матрицу (2), имеющую (i) частицы из неорганического люминесцентного материала, рассредоточенные в ней, и/или (ii) неорганический люминесцентный материал (6), расположенный по меньшей мере на одной ее стороне, при этом волновод ассоциирован с фотогальваническим элементом (4), так что при использовании по меньшей мере часть света, излученного из люминесцентного материала, поступает в фотогальванический элемент (4), чтобы создать напряжение в элементе, при этом неорганический люминесцентный материал имеет максимум поглощения по меньшей мере в одной из ультрафиолетовой области, видимой области и инфракрасной области, ширину линии поглощения 50 нм или более, ширину линии испускания 20 нм или менее и Стоксов сдвиг 50 нм или более.2. Фотогальванический генератор (1) по п.1, в котором неорганический люминесцентный материал имеет ширину линии поглощения 100 нм или более, ширину линии испускания ...

Mit einem Polymer durch koordinative Bindung gepfropfter Erdalkalialuminat-Leuchtstoff

Die Erfindung stellt einen lange nachglimmenden Leuchtstoff, der mit einem Polymer gepfropft ist, welcher zusammengesetzt ist aus einem Erdalkalialuminat-Leuchtstoff, welcher mit einem Polymer durch Koordinationsbindung gepfropft worden ist, und ein Verfahren zur Herstellung desselbigen, bereit. Die Methode zur Herstellung des mit einem Polymer gepfropften Leuchtstoffs umfasst zwei Schritte: Das Erdalkalialuminat, welches durch Seltenerdmetallionen aktiviert worden ist, wird mit einem difunktionellen Ligand koordiniert, um einen koordinierten lange nachglimmenden Leuchtstoff zu bilden; der koordinierte lange nachglimmende Leuchtstoff wurde in einem organischen Lösungsmittel bei einer Temperatur von 40 bis 130°C dispergiert, der Ligand wurde durch einen Initiator initiiert und konnte mit anderen polymerisierbaren Monomeren copolymerisieren, um den mit einem Polymer gepfropften lange nachglimmenden Leuchtstoff zu bilden. Die gebildeten Leuchtstoffe haben eine gute Wasserresistenz und gute ...

Phosphoreszentes Phosphor

BARIUM-MAGNESIUM-ALUMINAT-PHOSPHOR

Optoelectronic semiconductor component e.g. LED, for generating e.g. electromagnetic infrared radiation, has conversion element performing conversion of primary radiation into secondary radiation from spectral region of infrared radiation

The component (1) has a radiation-emitting semiconductor chip (2) emitting primary radiation in a spectral region of UV-radiation to green light during operation. A conversion element (6) performs outweighing conversion of the primary radiation emitted by the semiconductor chip into down-energetic secondary radiation from the spectral region of infrared radiation based on a quantum cutting principle. The primary radiation exhibits a spectral range of 380 to 500 nano meter. The conversion element is made of fluoride, borate, phosphate and bromide.

Verfahren zur Herstellung einer rosafarbenes Licht emittierenden Diode mit hoher Helligkeit

Die vorliegende Erfindung betrifft Yttriumaluminiumgranat-Fluoreszenzpulver mit der Formel (Y¶3-x-y¶Z¶x¶Eu¶y¶)Al¶5¶O¶12¶ oder (Y¶3¶Z¶x¶Eu¶y¶)Al¶5¶O¶12¶, wobei 0 < x 0,8, 0 < y 1,5 und Z ausgewählt ist aus der Gruppe, bestehend aus den Seltenerdmetallen, ausgenommen Europium (Eu). Die vorliegende Erfindung betrifft weiterhin eine rosafarbenes Licht emittierende Vorrichtung, welche eine lichtemittierende Diode als lumineszierendes Element und einen Fluoreszenzkörper, enthaltend Yttriumaluminiumgranat-Fluoreszenzpulver, umfasst, wobei die Diode Licht mit einer Wellenlänge im Bereich von 370 bis 410 nm emittiert, welches dann Yttriumaluminiumgranat-Fluoreszenzpulver in dem Fluoreszenzkörper zur Emission eines anderen Lichts mit einer Wellenlänge im Bereich von 585 nm bis 700 nm anregt, so dass die beiden Lichter kombinieren, um rosafarbenes Licht zu erzeugen. Die vorliegende Erfindung betrifft weiterhin die Herstellung der Yttriumaluminiumgranat-Fluoreszenzpulver.

REGELN FÜR EFFIZIENTE LICHTQUELLEN MIT MITTELS LEUCHTSTOFF KONVERTIERTEN LEDS

Sol-Gel-Verfahren zur Herstellung von dünnen lumineszierenden Filmen.

Wellenlängenkonversionszusammensetzungen, Wellenlängenkonverter und Einrichtungen damit

Offenbart werden hier Wellenlängenkonversionszusammensetzungen, Wellenlängenkonverter und Lichtquellen damit. Die Wellenlängenkonversionszusammensetzungen enthalten mindestens eine Poly(silphenylen-siloxan)-Gel-Matrix, die mindestens ein Wellenlängenkonversionsmaterial, wie einen oder mehrere Leuchtstoffe in Pulver- und/oder Teilchenform, enthält. Offenbart werden auch Verfahren zur Herstellung derartiger Zusammensetzungen und Konverter. Offenbart werden auch Lichtquellen mit Wellenlängenkonversion wie Leuchtdiodenpakete mit Wellenlängenkonversion. Die Poly(silphenylen-siloxan)-Gel-Matrix weist eine relativ hohe thermische Stabilität sowie wünschenswerte optische Eigenschaften auf.

Röntgenbildverstärkerschirm mit verbesserter Emittierung

BELEUCHTUNGSVORRICHTUNG MIT STRAHLUNGSQUELLE UND FLUORESZENZMATERIAL

Nighttime drive safety warning structure

Markers

A marker (100) for illuminating an area of an aircraft comprises a light emitting material (104) comprising: a persistent photoluminescent material arranged to emit light from a first region of the electromagnetic spectrum in response to an excitation; and a fluorescent or phosphorescent dye arranged to absorb light emitted by the persistent photoluminescent material, and emit light from a second, different, region of the electromagnetic spectrum, in response to the absorption of light of the first region of the electromagnetic spectrum. The fluorescent or phosphorescent dye absorbs substantially all of the light emitted by the photoluminescent material. The marker may in some cases two or more regions with light emitting material that have different fluorescent or phosphorescent dyes and emit light in different regions of the electromagnetic spectrum. The marker may be used in emergency exit signs, emergency path markers, seat markings etc.

Fluorescent substance

This invention provides a fluorescent substance that can provide a light emitting device which has been practically improved in luminescence characteristics which are mainly color rendering properties. The fluorescent substance is characterized by comprising a compound represented by formula aM<1>O Ò bM<2>2O3 Ò cM<3>O2 wherein M<1> represents at least one element selected from the group consisting of Ba, Sr, Ca, Mg and Zn, M<2> represents at least one element selected from the group consisting of Al, Sc, Ga, Y, In, La, Gd and Lu, M<3> represents at least one element selected from the group consisting of Si, Ti, Ge, Zr, Sn and Hf, a is a value of not less than 8 and not more than 10, b is a value of not less than 0.8 and not more than 1.2, and c is a value of not less than 5 and not more than 7, and having at least one element as an activating agent selected from the group consisting of rare earth elements, Mn, Bi and Zn and incorporated into the compound.

LUMINESCENT MATERIALS

MLUMINESCENT MATERIALS

Improved europium-activated phosphors containing oxides of rare-earth and group IIIB metals and method of making the same

LOW PRESSURE MERCURY STEAMING TLA DUNG LAMP

SOURCE OF LIGHT AND PROCEDURE FOR THE PRODUCTION OF LIGHT WITH INDEPENDENTLY CHANGEABLE COLOR AND BRIGHTNESS

Green emitting material

The invention relates to an improved green emitting material of the form M I 3-x-y M II x Si 6-x Al x O 12 N 2 :Eu y , whereby M I is an earth alkali metal and M II is a rare earth metal or Lanthanum. This material can be made as a ceramic using a low temperature sintering step, resulting in a better and more uniform ceramic body.

Cerium and Europium Doped Phosphor Compositions and Light Emitting Devices Including the Same

Compounds of Formula I, which include both cerium and europium, may be useful as phosphors in solid state light emitting devices. Light emitting devices including such phosphors may emit warm white light.

(halo)silicate-based phosphor and manufacturing method of the same

Disclosed are a (halo)silicate-based phosphor and a manufacturing method of the same. More particularly, the disclosed phosphor is a novel (halo)silicate-based phosphor manufactured by using a (halo)silicate-based host material containing an alkaline earth metal, and europium as an activator.

Light emitting device

The present invention provides a light emitting device, comprising a first light emitting diode for emitting light in an ultraviolet wavelength region; at least one phosphor arranged around the first light emitting diode and excited by the light emitted from the first light emitting diode to emit light having a peak wavelength longer than the wavelength of the light emitted from the first light emitting diode; and at least one second light emitting diode for emitting light having a wavelength different from the peak wavelength of the light emitted from the phosphor.

Luminescent material

A luminescent material is disclosed. The luminescent material may include a first compound having a host lattice comprising first ions and oxygen. A first portion of the first ions may be substituted by copper ions. In one embodiment, the host lattice may include silicon, the copper ions may be divalent copper ions and the first compound may have an Olivine crystal structure, β-K 2 SO 4 crystal structure, a trigonal Glaserite (K 3 Na(SO 4 ) 2 ) or monoclinic Merwinite crystal structure, a tetragonal Ackermanite crystal structure, a tetragonal crystal structure or an orthorhombic crystal structure. In another embodiment, the copper ions do not act as luminescent ions upon excitation with the ultraviolet or visible light.

YTTRIUM OXIDE PHOSPHOR AND PREPARATION METHOD THEREOF

Fluorescent materials and preparation methods thereof are provided. The fluorescent materials are represented by the general formula: YO: Re, M, ZnAlO, wherein Re is at least one selected from Eu and Tb, M is at least one selected from Ag, Au, Pt and Pd in the form of nano-particle, and 0 Подробнее

COMPOSITE LAYER CONTAINING A LAYER OF PHOSPHORS AND RELATED ELECTROLUMINESCENT DEVICE

Solutions to improve the properties of the phosphors and electroluminescent devices are described, using phosphors in combination with zeolites for converting UV or Blue radiation into visible radiation. 1. A composite layer for conversion of UV or blue radiation into a visible radiation , containing a layer of phosphors combined with zeolites of nanometric size , wherein at least 95% of the nanometric zeolites have dimensions between 60 and 400 nm.2. The composite layer according to wherein said nanometric zeolites are dispersed in a transparent polymeric matrix.3. The composite layer according to wherein said nanometric zeolites are uniformly dispersed with the phosphors.4. The composite layer according to wherein at least 95% of said nanometric zeolites have dimensions comprised between 80 and 150 nm.5. The composite layer according to wherein at least 95% of said nanometric zeolites have dimensions comprised between 90 and 110 nm.6. The composite layer according to wherein said nanometric zeolites form a covering layer positioned over said layer of phosphors.7. The composite layer according to wherein at least 95% of said nanometric zeolites have dimensions comprised between 250 and 350 nm.8. The composite layer according to wherein at least 95% of said nanometric zeolites have dimensions comprised between 280 and 320 nm.9. The composite layer according to wherein said nanometric zeolites form an intermediate layer positioned between said layer of phosphors and a transparent substrate.10. The composite layer according to wherein at least 95% of said nanometric zeolites have dimensions comprised between 60 and 100 nm.11. The composite layer according to wherein at least 95% of said nanometric zeolites have dimensions comprised between 70 and 90 nm.12. An electroluminescent device comprising a composite layer for conversion of UV or blue radiation into a visible radiation claim 10 , containing a layer of phosphors combined with zeolites of nanometric size wherein ...

SILICATE LUMINESCENT MATERIALS AND PREPARATION METHODS THEREOF

Silicate luminescent materials and preparation methods thereof are provided. The luminescent materials are represented by the general formula: MMSiO:xCe, yM, Mis at least one selected from Ca, Sr, Ba, Mg and at least contains Ca, Mis Sc, Sc and Y, Mis one selected from metal nano particles of Ag, Au, Pt, Pd or Cu, wherein 2.8≦a≦3.2, 1.8≦b≦2.1, 2.9≦c≦3.3, 0.01≦x≦0.2 and 1×10≦y≦1×10. Compared to the luminescent materials in the prior art, the said luminescent materials have higher luminous efficiency and more stable performance and structure. The said methods have simple technique and low cost, therefore are appropriate to be used in industry. 1. A silicate fluorescent powder , having a chemical formula of: MMSiO:xCe , yM , wherein 2.8≦a≦3.2 , 1.8≦≦b≦2.1 , 2.9≦c≦3.3 , 0.01≦x≦0.2 , 1×10≦y≦1×10 , Mis a combination of at least one of Sr , Ba and Mg with Ca; Mis Sc or a combination of Sc with Y; Mrepresents a metal nanoparticle selected from one of Ag , Au , Pt , Pd and Cu nanoparticles.2. A method for preparing a silicate fluorescent powder , comprising the steps of:{'sup': '0', 'providing a Mmetal nanoparticle sol;'}{'sup': 2', '3', '0', '2', '3', '3+', '0', '−4', '31 2', '2', '3', '0, 'sub': a', 'b', 'c', '[a+3(b+x)/2+2c], 'providing a source compound of M, a source compound of M, a source compound of Si, a source compound of Ce and the Mmetal nanoparticle sol according to stoichiometric ratio of corresponding elements in a chemical formula of MMSiO:xCe, yM, wherein 2.8≦a≦3.2, 1.8≦b≦2.1, 2.9≦c≦3.3, 0.01≦x≦0.2, 1×10≦y≦1×10, Mis a combination of at least one of Sr, Ba and Mg with Ca; Mis Sc or a combination of Sc with Y; Mrepresents a metal nanoparticle selected from one of Ag, Au, Pt, Pd and Cu nanoparticles;'}{'sup': 0', '2', '3, 'adding the Mmetal nanoparticle sol and the source compound of M, a source compound of Mand a source compound of Ce to an alcoholic solution of the source compound of Si to give a mixed solution;'}adjusting the pH of the mixed solution to be ...

Thermally induced flash synthesis of photoluminescent compositions

A process is disclosed for the production of persistent phosphors, comprising exposing particles of phosphor precursors for a short time to a heat source selected from a particle plasma and an open flame arising from the combustion of hydrocarbons. A process for coating a substrate with persistent phosphors is also disclosed, comprising directing a stream of phosphor precursor particles for a short time through the same types of heat source toward the substrate. Preferred phosphors are Strontium Aluminate-based doped with Dysprosium and Europium.

Color Adjustable Luminescent Powder and Preparation Method Thereof

A color-adjustable luminescent powder is provided, the chemical general formula of which is (YGdEu)O·xZnAlO, wherein 0≦a≦0.99, 0≦b≦0.99, 0.01≦c≦0.08, provided that a+b+c=1 and a and b are not 0 simultaneously; x is the molar ratio between ZnAlO and (YGdEu)O, 0.01≦x≦0.20, and 0.001≦m≦0.05. A preparation method of the above luminescent powder is also provided, which comprises the following steps: adding an aqueous alcohol solution containing a complexing agent, and a surfactant to a mixed solution containing needed components to obtain a precursor solution, then aging the precursor solution, undergoing calcination treatment and cooling to obtain the said luminescent powder. 1. A color-adjustable fluorescent powder , wherein the color-adjustable fluorescent powder has a chemical formula of (YGdEu)O.xZnAlO , wherein 0≦a≦0.99 , 0≦b≦0.99 , 0.01≦c≦0.08 , and a+b+c=1 ,a and b are not simultaneously 0 , x is a molar ratio of ZnAlO to (YGdEu)O , 0.01≦x≦0.20 , and 0.001≦m≦0.05.2. A method for preparing a color-adjustable fluorescent powder , comprising the steps of:{'sup': 2+', '3+', '3+', '3+', '3+', '3+', '3+', '3+', '3+, 'sub': a', 'b', 'c', '2', '3, 'preparing a solution of Znand Al, and preparing a solution of Y, Eu and Gd or of Eu and Gd or of Y and Eu according to molar ratio of corresponding elements in a chemical formula of (YGdEu)O;'}{'sub': a', 'b', 'c', '2', '3', '(1-m)', 'm', '(1-m)', 'm', 'a', 'b', 'c', '2', '3, 'taking the above solutions according to corresponding molar ratio in a chemical formula of (YGdEu)O. xZnAlO, wherein 0≦a≦0.99, 0≦b≦0.99, 0.01≦c≦0.08, and a+b+c=1, a and b are not simultaneously 0, x is a molar ratio of ZnAlO to (YGdEu)O, 0.01≦x≦0.20, and 0.001≦m≦0.05; and adding an alcohol-water mixed solution contain a complexing agent, and a surfactant to give a precursor solution; and'}aging the precursor solution, calcinating, cooling and milling to give the color-adjustable fluorescent powder.3. The method for preparing a color-adjustable ...

Silicon Nitride Powder for Siliconnitride Phosphor, CaAlSiN3 Phosphor Using Same, Sr2Si5N8 Phosphor Using Same, (Sr, Ca)AlSiN3 Phosphor Using Same, La3Si6N11Phosphor Using Same, and Methods for Producing the Phosphors

Provided are: a silicon nitride powder for siliconitride phosphors with higher luminance, which can be used for a fluorescent display tube (VFD), a field emission display (FED), a plasma display panel (PDP), a cathode ray tube (CRT), a light emitting diode (LED), and the like; a CaAlSiNphosphor, an SrSiNphosphor, an (Sr, Ca)AlSiNphosphor and an LaSiNphosphor, each using the silicon nitride powder; and methods for producing the phosphors. The present invention relates to a silicon nitride powder for siliconitride phosphors, which is characterized by being a crystalline silicon nitride powder that is used as a starting material for producing a siliconitride phosphor that includes silicon element and nitrogen element but does not contain oxygen element as a constitutent element, and which is characterized by having an oxygen content of 0.2% by weight to 0.9% by weight; a CaAlSiNphosphor, an SrSiNphosphor, an (Sr, Ca)AlSiNphosphor and an LaSiNphosphor, each using the silicon nitride powder; and methods for producing the phosphors. 112-. (canceled)13. A crystalline silicon nitride powder for siliconitride phosphors , which is used as a raw material for producing a siliconitride phosphor comprising a silicon element and a nitrogen element but no oxygen element as a constituent element , an oxygen content of said silicon nitride powder being 0.2% by weight to 0.8% by weight.14. The silicon nitride powder for the siliconitride phosphors according to claim 13 , wherein the silicon nitride powder has an average particle diameter of 1.0 μm to 12 μm.15. The silicon nitride powder for the siliconitride phosphors according to claim 13 , wherein the silicon nitride powder has a specific surface area of 0.2 m/g to 4.0 m/g.16. The silicon nitride powder for the siliconitride phosphors according to claim 13 , wherein the siliconitride phosphor is a CaAlSiNphosphor claim 13 , a SrSiNphosphor claim 13 , a (Sr claim 13 , Ca)AlSiNphosphor claim 13 , or a LaSiNphosphor.17. A method for ...

LUMINESCENT SUBSTANCE AND LIGHT SOURCE HAVING SUCH A LUMINESCENT SUBSTANCE

A blue to yellow emitting phosphor from the class of orthosilicates, which substantially has the structure EA2SiO4:D, wherein the phosphor comprises as component EA at least one of the elements EA=Sr, Ba, Ca or Mg alone or in combination, wherein the activating doping D consists of Eu and wherein a deficiency of SiO2 is introduced, such that a modified sub stoichiometric orthosilicate is present. 1. A blue to yellow emitting phosphor from the class of orthosilicates , which substantially has the structure EA2SiO4:D , wherein the phosphor comprises as component EA at least one of the elements EA=Sr , Ba , Ca or Mg alone or in combination , wherein the activating doping D consists of Eu and wherein a deficiency of SiO2 is introduced , such that a modified sub stoichiometric orthosilicate is present.2. The phosphor as claimed in claim 1 , wherein the orthosilicate is an orthosilicate stabilized with SE and N claim 1 , where SE=rare earth metal claim 1 , such that the stoichiometry corresponds to EA2 x aSExEUaSi1 yO4 x 2yNx.3. The phosphor as claimed in claim 1 , wherein SE=La or Y alone or in combination.4. The phosphor as claimed in claim 2 , wherein the proportion a of the Eu is between a=0.01 and 0.20.5. The phosphor as claimed in claim 1 , wherein EA contains Sr and/or Ba with at least 66 mol % claim 1 , in particular with a Ca proportion of a maximum of 5 mol % and in particular with an Mg proportion of a maximum of 30 mol %.6. The phosphor as claimed in claim 1 , wherein the proportion x is between 0.003 and 0.02.7. The phosphor as claimed in claim 1 , wherein the factor y crucial for the deficiency is in the range of 0 Подробнее

Phosphor and light emitting device

The present invention provides a phosphor emitting green fluorescence when being effectively excited by excitation light in a wavelength range from blue light to near-ultraviolet light, having an emission intensity that does not vary significantly with variation in the wavelength of the excitation light, and being manufactured easily. The phosphor includes a chemical structure represented by the following general formula (A): A(M 1-a-x Eu a Mn x )L(Si 1-b Geb) 2 O 7   , (A), where A is one or more elements selected from Li, Na, and K, M is one or more elements selected from Mg, Ca, Sr, Ba, and Zn, L is one or more elements selected from Ga, Al, Sc, Y, La, Gd, and Lu, a is a numerical value satisfying 0.001≦a≦0.3, b is a numerical value satisfying 0≦b≦0.5, and x is a numerical value satisfying 0≦x≦0.2.

PHOSPHOR, MANUFACTURING METHOD OF PHOSPHOR AND LIGHT EMITTING DEVICE INCLUDING THE SAME

A phosphor is represented by a general Formula: EuMLSiAlNOand satisfies 0.00001≦x≦2.9999, 0.0001≦y≦2.99999 and 0≦z≦6.0. L is at least one element selected from La, Y, Gd and Lu. M is at least one element selected from Ca, Sr, Ba and Mn. 1. A phosphor , respesented by a general Formula: EuMLSiAlNOand satisfying 0.00001≦x≦2.9999 , 0.0001≦y≦2.99999 and 0≦z 6.0 , where:L is at least one element selected from the group consisting of La, Y, Gd and Lu, andM is at least one element selected from the group consisting of Ca, Sr, Ba and Mn.2. The phosphor of claim 1 , wherein in the general Formula claim 1 , 0.00001≦x≦0.5 is satisfied.3. The phosphor of claim 1 , wherein in the general Formula claim 1 , 0.0001≦y≦1.0 is satisfied.4. The phosphor of claim 1 , wherein in the general Formula claim 1 , 0≦z≦0.5 is satisfied.5. The phosphor of claim 1 , wherein the phosphor has a wavelength of 550 nm or more in a center of an emission spectrum when ultraviolet light or blue light is used as an excitation source.6. The phosphor of claim 1 , wherein the phosphor has a crystal structure the same as a crystal structure of a phosphor represented by LaSiN.7. The phosphor of claim 1 , wherein M is partially substituted with Eu in Eu form.8. A manufacturing method of a phosphor claim 1 , comprising steps of:preparing an Si raw material;preparing an M raw material;preparing an L raw material;preparing an Eu raw material; and{'sub': x', 'y', '3−x−y', '6−z', 'z', '11−(z+y+z)', '(z+y+z), 'synthesizing the Si raw material, the M raw material, the L raw material, and the Eu raw material to form a material represented by a general Formula: EUMLSiAlNOand satisfying 0.00001≦x 2.9999, 0.0001≦y≦2.99999 and 0≦z≦6.0, whereL is at least one element selected from the group consisting of La, Y, Gd and Lu, andM is at least one element selected from the group consisting of Ca, Sr, Ba and Mn.9. The manufacturing method of claim 8 , wherein the step of synthesizing the Si raw material claim 8 , the M raw ...

Novel Long Decay Phosphors

The present invention relates to long decay phosphors comprising rare earth activated strontium aluminates and methods for producing them. The phosphors comprise a matrix of the formula SrAlOcomprising europium as an activator and a further rare earth element as a co-activator, wherein the molar ratio of Al/Sr in the starting materials is in the range of 3.1 to less than 3.5 and the ratio of Eu/Sr is in the range of 0.0015 to 0.01. The process for the preparation of a phosphor comprises the steps of milling the starting materials for the synthesis of the phosphor, the starting materials comprising a boron compound selected from boric acid, boric oxide or a borate salt in an amount such that the B/Sr molar ratio is between 0.1 and to 0.3, treating the milled composition with heat, grinding the block material which is obtained through the heat treatment, ball-milling the crushed material, sieving the material, and washing the material with an aqueous solution. 115-. (canceled)16. A phosphor comprising:{'sub': 4', '14', '25, '(a) a matrix of the formula SrAlO, made from starting materials,'}(b) boron,(c) europium as an activator, and wherein the molar ratio of Al/Sr in the starting materials is in the range of 3.1 to less than 3.5 and', 'the ratio of Eu/Sr is in the range of 0.0015 to 0.01., '(d) a further rare earth element as a co-activator,'}17. The phosphor according to claim 16 , wherein the further rare earth element is dysprosium.18. The phosphor according to claim 17 , wherein the amount of dysprosium is such that the molar ratio Dy/Sr in the starting materials is in the range of 0.005 to 0.02.19. The phosphor according to claim 16 , wherein the amount of boron is such that the ratio B/Sr in the starting materials is in the range of 0.1 to 0.3.20. The phosphor according to claim 16 , whereinthe range of the molar ratio of Al/Sr is 3.1 to 3.45,the range of the molar ratio of Eu/Sr is 0.0015 to 0.01,the range of the molar ratio of B/Sr is 0.1 to 0.3 andthe range ...

PHOSPHOR CERAMICS AND METHODS OF MAKING THE SAME

Electric sintering of precursor materials to prepare phosphor ceramics is described herein. The phosphor ceramics prepared by electric sintering may be incorporated into devices such as light-emitting devices, lasers, or used for other purposes. 1. A method of preparing a dense phosphor ceramic , comprising: a garnet or a garnet precursor; and', 'a nitride or a nitride precursor;, 'heating a multi-elemental composition to sinter the composition by applying a pulse electric current to the composition at a pressure of about 1 MPa to about 500 MPa, wherein the multi-elemental composition compriseswherein the method produces a dense phosphor ceramic.2. The method of claim 1 , wherein a pulse of the pulse electric current has a maximum current of about 250 A to about 2000 A.3. The method of claim 1 , wherein the multi-elemental composition is heated to a temperature of about 1000° C. to about 1800° C.4. The method of claim 1 , wherein applying the pulse electric current causes a temperature rise of the multi-elemental composition at a rate of about 10° C./min to about 600° C./min.5. The method of claim 1 , wherein the multi-elemental composition comprises the garnet precursor claim 1 , and wherein the garnet precursor comprises an oxide of yttrium claim 1 , an oxide of aluminum claim 1 , an oxide of gadolinium claim 1 , an oxide of lutetium claim 1 , an oxide of gallium claim 1 , or an oxide of terbium6. The method of claim 1 , wherein the garnet is a powder.7. The method of claim 1 , wherein the nitride precursor comprises CaN claim 1 , AlN claim 1 , SiN claim 1 , or a combination thereof.8. The method of claim 1 , wherein the multi-elemental composition further comprises a dopant or a dopant precursor.9. The method of claim 1 , wherein the multi-elemental composition is heated in contact with a sintered ceramic plate.10. The method of claim 1 , wherein the multi-elemental composition comprises the garnet and the nitride claim 1 , and wherein the garnet is a powder and ...

METHOD OF MANUFACTURING NANOPHOSPHORS, LIGHT EMITTING DIODE AND METHOD OF MANUFACTURING LIGHT EMITTING DIODE

A method of manufacturing a nanophosphor includes: contacting a nanophosphor raw material and a flux to form a mixture, sintering the mixture to form a nanoprecursor, ball-milling the nanoprecursor, and drying the ball-milled nanoprecursor to form the nanophosphor, wherein an average particle size of the nanophosphor is equal to or more than about 50 nanometers (nm) and equal to or less than about 7 micrometers (um). 1. A method of manufacturing a nanophosphor , the method comprising:contacting a nanophosphor raw material and a flux to form a mixture,sintering the mixture to form a nanoprecursor,ball-milling the nanoprecursor, anddrying the ball-milled nanoprecursor to form the nanophosphor,wherein an average particle size of the nanophosphor is equal to or more than about 50 nanometers and equal to or less than about 7 micrometers.2. The method of manufacturing a nanophosphor of claim 1 , wherein:the nanophosphor raw material is in the form of a powder.3. The method of manufacturing a nanophosphor of claim 2 , wherein:{'sub': 3', '5', '12', '2', '4', '2', '4', '2', '4', '2', '2', '7, 'sup': 3+', '3+', '+', '2+', '3+', '2+', '2+, 'the nanophosphor is a compound represented by any one of YAlO:Ce, CaSiO: (Ce,Li), SrSiO: (Eu,Dy), SrGaS:Eu or (Sr,Ba)GaSiO:Eu.'}4. The method of manufacturing a nanophosphor of claim 2 , wherein:{'sub': 3', '5', '12, 'sup': '3+', 'the nanophosphor is a compound represented by YAlO:Ce, and'} [{'sub': 2', '3, 'YOhaving a particle size equal to or more than about 40 nanometers and equal to or less than about 400 nanometers,'}, {'sub': 2', '3, 'AlOhaving a particle size of equal to or more than about 30 nanometers and equal to or less than about 1 micrometer, and'}, {'sub': '2', 'CeOhaving a particle size of equal to or more than about 50 nanometers and equal to or less than about 500 nanometers.'}], 'the nanophosphor raw material comprises'}5. The method of manufacturing a nanophosphor of claim 1 , wherein:the sintering of the mixture to form ...

MULTI-DOPED LUTETIUM BASED OXYORTHOSILICATE SCINTILLATORS HAVING IMPROVED PHOTONIC PROPERTIES

The present invention relates to a set of multi-doped cerium-activated scintillation materials of the solid solutions on the basis of the rare earth silicate, comprising lutetium and having compositions represented by the chemical formulas: (LuACeSi)MeJOand (LuACeSi)MeJO. The invention is useful for detection of elementary particles and nuclei in high-energy physics, nuclear industry; medicine, Positron Emission Tomography (TOF PET and DOI PET scanners) and Single Photon Emission Computed Tomography (SPECT), Positron Emission Tomography with Magnetic Resonance imaging (PET/MR); X-ray computer fluorography; non-destructive testing of solid state structure, including airport security systems, the Gamma-ray systems for the inspection of trucks and cargo containers. 1. A scintillation material having an emission maximum in the range of about 400-450 nm and based on a silicate comprising lutetium (Lu) and cerium (Ce) characterised in that the composition is represented by one of the two chemical formulas{'br': None, 'sub': 2−w−x+2y', 'w', 'x', '1−y', '1−z', 'z', 'j', 'q, '(LuACeSi)MeJO\u2003\u2003(1)'}where:A is at least one element selected from the group consisting of Sc, Y, Gd, and Lu;Me is at least one element selected from the group consisting of Li, Na, K, Cu, Ag, Mg, Ca, Zn, Sr, Cd, B, Al, Ga, V, Cr, Mn, Fe, Co, Ni, Ti, Ge, Zr, Sn, Hf, La, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Lu;J is at least one element selected from the group consisting of N, F, P, S, and Cl;q is a value between 4.9 f.u. and 5.024 f.u.,w is a value between near 0 f.u. and 1f.u.,{'sup': '−4', 'x is a value between 3×10f.u. and 0.02 f.u.,'}y is a value between 0.003 f.u. and 0.024 f.u.,z is a value between near 0 f.u. and 0.001f.u., and {'br': None, 'sub': 2−w−x−2y', 'w', 'x', '1+y', '1−z', 'z', 'j', 'q, '(LuACeSi)MeJO\u2003\u2003(2)'}, 'j is a value between near 0 f.u. and 0.03 f.u.,'}where:A is at least one element selected from the group consisting of Sc, Y, Gd, and Lu;Me is at least one ...

White emitting light source and luminescent material

The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2 EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.

SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT AND A PROCESS OF FORMING THE SAME

A scintillation compound can include a rare earth element that is in a divalent (RE) or a tetravalent state (RE). The scintillation compound can include another element to allow for better change balance. The other element may be a principal constituent of the scintillation compound or may be a dopant or a co-dopant. In an embodiment, a metal element in a trivalent state (M) may be replaced by RE and a metal element in a divalent state (M). In another embodiment, M may be replaced by REand M. In a further embodiment, M may be replaced by a RE and a metal element in a monovalent state (M). The metal element used for electronic charge balance may have a single valance state, rather than a plurality of valence states, to help reduce the likelihood that the valance state would change during formation of the scintillation compound. 1. A material comprising a rare earth (Ln) silicate doped with an element RE different from Ln , RE being chosen among Ce , Pr , Tb , wherein the element RE is at least partially in its 4+ oxidation state (RE) , the quantity of RE in said material being comprised between 0.0001% and 0.1% in mass , and further doped with a divalent alkaline-earth element.2. The material according to claim 1 , wherein the material is a scintillation material and has an afterglow of less than 200 ppm after 100 ms relative to the intensity measured during an X-ray irradiation.3. The material according to claim 1 , wherein it has the formula{'br': None, 'sub': (2−z−x1−x2)', 'x1', 'x2', 'z', 'v', '(p−v)', '(3+2p), 'sup': 3+', '4+, 'LnREREMM′SiO'}in which:Ln represents a rare earth different than RE;M represents a divalent alkaline-earth element;M′ represents a trivalent element such as Al, Ga, Sc or In;(z+v) is greater than or equal to 0.0001 and lower than or equal to 0.2;z is greater than 0 and lower than or equal to 0.2;v is greater than or equal to 0 and lower than or equal to 0.2;x1 is greater than or equal to 0.00005 and lower than 0.1;x2 is greater than or ...

WAVELENGTH CONVERTING MATERIAL FOR A LIGHT EMITTING DEVICE

Embodiments of the invention include a wavelength-converting composition as defined by RAMSiAlON, with □ being vacancies of the structure that are filled by oxygen atoms with 00,wherein [Ca]>0,wherein 0<[Eu]<0,01 , andwherein ([La]+[Ca]+[Ce]+[Eu])/[Si]≤0.52.2. (canceled)3. The wavelength converting material according to claim 1 , wherein the wavelength converting material comprises SiAlON.4. The wavelength converting material according to claim 1 , wherein R=La(YLu) claim 1 , where a≥0.5 claim 1 , 0≤b≤1.5. The wavelength converting material according to claim 1 , further comprising Y and Sr.6. The wavelength converting material according to claim 1 , wherein no more than 5% of Si is replaced by Al.7. The wavelength converting material according to claim 1 , further comprising La claim 1 , Ca claim 1 , and O.8. A device comprising:a light emitting diode that emits blue light; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a wavelength converting material according to disposed in a path of the blue light.'}9. The device according to ...

SUPERTETRAHEDRON PHOSPHOR FOR SOLID-STATE LIGHTING

The invention provides a lighting unit () comprising a light source (), configured to generate light source light () and a luminescent material (), configured to convert at least part of the light source light () into luminescent material light (), wherein the luminescent material () comprises a phosphor (), wherein this phosphor comprises an alkaline earth aluminum nitride based material having a cubic crystal structure with T5 supertetrahedra, wherein the T5 supertetrahedra comprise at least Al and N, and wherein the alkaline earth aluminum nitride based material further comprises a luminescent lanthanide incorporated therein. 2. The lighting unit according to claim 1 , wherein (a) the luminescent lanthanide is selected from the group consisting of Eu (II) claim 1 , Sm claim 1 , Yb claim 1 , Ce claim 1 , Pr claim 1 , Nd claim 1 , Sm claim 1 , Eu (III) claim 1 , Gd claim 1 , Tb claim 1 , Dy claim 1 , Ho claim 1 , Er claim 1 , and Tm claim 1 , and wherein (b) the alkaline earth aluminum nitride based material is of the space Fd-3m.3. The lighting unit according to claim 1 , wherein the T5 supertetrahedra comprise AlNtetrahedra.4. The lighting unit according to claim 1 , wherein G=Al.5. The lighting unit according to claim 1 , wherein M comprises one or more of Ca claim 1 , Sr claim 1 , and Mg claim 1 , wherein A comprises Li claim 1 , wherein G at least comprises Al claim 1 , wherein Q comprises Mg claim 1 , wherein D comprises Si claim 1 , wherein R comprises O claim 1 , wherein Es comprises Eu claim 1 , and wherein RE comprises Ce claim 1 , wherein further x/y<0.1 or y/x<0.1 claim 1 , and wherein d=n=c=0.6. The lighting unit according to claim 1 , wherein the light source comprises a light emitting diode (LED) claim 1 , and wherein the alkaline earth aluminum nitride based material comprises MAAlN:EU claim 1 , with δ in the range of 0-2.7. The lighting unit according to claim 1 , wherein the luminescent material further comprise one or more other phosphors ...

Invisible Inimitable Identity, Provenance, Verification and Authentication 7,70 Identifier System

The Invisible Inimitable Identity, Provenance, Verification and Authentication 7,70 Identifier System is an invisible or visible identifying embodiment having multiple machine readable emission output wavelengths and phosphorescence decay lifetimes generated from crystals contained in the embodiment when subjected to an incident energy source(s), the spatial distribution of the crystals limited only to the embodiment boundary. Comparison of the resulting spectral information histogram, using a preselected percentage of the decay lifetimes, against a database containing the embodiment's pre-established information verifies an item's identity and validates it as authentic. The system provides real-time verification for OEM parts and other items rapidly determining if the part or item is, in fact, an actual OEM item thus providing compliance to SAE Aerospace Standard AS6081. The 7,70 Identifier System provides a cost effective means of counterfeit part avoidance providing in excess of one billion individual unique identities. 1. An identity , verification and authentication system , an embodiment comprising a subset of three or more from a population of more than three inorganic phosphorescent crystals having different optical measurements , installed within an object's structure or in a suitable compound or binder upon the surface of the object , from which the subset of crystals when assayed for optical characteristics after application of incident energy source(s) conducive to their acceptable absorption and upon the energy source(s) removal , the crystals luminesce whereupon the subset combination of like crystals' and different crystals' emitting wavelengths' values together with their respective decay lifetimes' values are data collected in histograms used to establish a unique identity scheme , thereafter the decay lifetime values are multiplied by a user selected percentage of the measured decay lifetime value to be combined with the particle wavelength data to ...

Alumina, Luminophores And Mixed Compounds, And Associated Preparation Processes

The present invention relates to the synthesis of luminophores and of reflective alumina for optimizing the emissive properties of a fluorescent layer. 1. A process for preparing via the alum route an aluminate luminophore comprised of aggregates with a mean size of about 10 μm and comprised of particles with a mean size of between 0.25 μm and 1.5 μm , said process comprising the steps of:(a) mixing ammonium alum with at least one additive based on a rare-earth metal to produce a mixture;(b) calcining said mixture at a first temperature of between 1100° C. and 1200° C. for a time of between 1 hour and 2 hours to produce a calcined mixture;(c) passing said calcined mixture through a grille made of non-contaminating material with a mesh size of between 150 μm and 250 μm;(d) grinding said calcined mixture and passing said calcined mixture through a screen to produce a ground mixture;(e) passing said ground mixture through a grille made of non-contaminating material with a mesh size of between 150 μm and 250 μm;(f) calcining said ground mixture resulting from step (e) at a second temperature of between 1300° C. and 1400° C. for a time of between 3 hours and 5 hours;(g) grinding the ground mixture resulting from step (f); and(h) passing the ground mixture resulting from step (g) through a grille made of non-contaminating material with a mesh size of between 150 μm and 250 μm.2. A process for preparing via the alum route an aluminate luminophore according to claim 1 , wherein said first temperature in step (b) is about 1150° C.3. A process for preparing via the alum route an aluminate luminophore according to claim 1 , wherein said time in step (b) is about 1 hour and 30 minutes.4. A process for preparing via the alum route an aluminate luminophore according to claim 1 , wherein said grill in step (c) has a mesh size of about 200 μm.5. A process for preparing via the alum route an aluminate luminophore according to claim 1 , wherein said grill in step (e) has a mesh size ...

PHOSPHOR AND LIGHT EMITTING DEVICE

A phosphor composed by containing Ce as a light emission center in a matrix garnet compound having a garnet structure. The matrix garnet compound is a solid solution composed of two or more end members, and the end members include LuCaMg(SiO)as a first end member. It is preferable that the matrix garnet compound is a compound containing Al. A light emitting device uses the phosphor and includes a solid-state light emitting device The phosphor is excited by light radiated by the solid-state light emitting device 1. A phosphor composed by containing Ce as a light emission center in a matrix garnet compound having a garnet structure ,{'sub': 2', '2', '4', '3, 'wherein the matrix garnet compound is a solid solution composed of two or more end members, and the end members include LuCaMg(SiO)as a first end member.'}2. The phosphor according to claim 1 , wherein the matrix garnet compound is a compound containing Al.3. The phosphor according to claim 1 , wherein the end members include YAl(AlO)as a second end member.4. The phosphor according to claim 1 , wherein the end members include LuAl(AlO)as a third end member.7. The phosphor according to claim 1 , wherein a part of Ca that composes the matrix garnet compound is replaced by Mg.8. A light emitting device claim 1 , wherein the phosphor according to is used.9. The light emitting device according to claim 8 , comprising:a solid-state light emitting device,wherein the phosphor is excited by light radiated by the solid-state light emitting device. The present invention relates to a novel garnet phosphor that is used together with a solid-state light emitting device, for example, such as a semiconductor laser diode (LD) and is widely usable as a phosphor to be used for a light source of a display device such as a projector or of a lighting device, and relates to a light emitting device using this phosphor.Heretofore, compounds having a crystal structure called a “garnet structure” have been known. As one of the compounds ...

PHOSPHOR, LIGHT-EMITTING DEVICE, IMAGE DISPLAY DEVICE, PIGMENT, AND ULTRAVIOLET ABSORBER

Provided are an oxynitride phosphor comprising a JEM crystal as a main component and being characterized by light-emitting properties (light emission color or excitation property, light emission spectrum) that is different from the known JEM phosphor, and an application thereof. The phosphor of the present invention comprises the JEM crystal activated with Eu and represented by MAl(Si, Al)(O, N)(where the M element is one or more elements selected from the group consisting of Ca, Sr, Eu, La, Sc, Y, and lanthanoid elements; and includes at least Eu as well as Ca and/or Sr). 1. A phosphor comprising a JEM crystal activated with Eu and represented by MAl(Si , Al)(O , N)(wherein an M element is one or two or more kinds of elements selected from a group consisting of Ca , Sr , Eu , La , Sc , Y , and lanthanoid elements; the M element includes at least Eu; and the M element includes Ca and/or Sr).2. The phosphor according to claim 1 , wherein the phosphor is represented by CaSrEuLaSiAlONand the parameters: a claim 1 , b claim 1 , c claim 1 , d claim 1 , e claim 1 , f claim 1 , g claim 1 , and h (wherein a+b+c+d+e+f+g+h=1) satisfy condition:{'br': None, 'i': 'a+b+d≦', '0.02≦0.06,'}{'br': None, 'i': 'c≦', '0.0003≦0.03,'}{'br': None, 'i': 'e≦', '0.1≦0.5,'}{'br': None, 'i': 'f≦', '0.02≦0.3,'}{'br': None, 'i': 'g≦', '0.02≦0.3,'}{'br': None, 'i': 'h≦', '0.3≦0.6, and'}{'br': None, 'i': 'a+b.', '0<'}3. The phosphor according to wherein the JEM crystal activated with Eu is represented by{'sub': t', 'u', 'x', '6-z', 'z', '10-z−t−u', 'z+t+u, '((Ca), Eu, La)AlSiAlNO;'}{'sub': t', 'u', 'x', '6-z', 'z', '10-z−t−u', 'z+t+u, '((Sr), Eu, La)AlSiAlNO, or'}{'sub': t', 'u', 'x', '6-z', 'z', '10-z−t−u', 'z+t+u, 'claim-text': [{'br': None, 'i': 't<', '0.3≦1,'}, {'br': None, 'i': 'u≦', '0.005≦0.2, and'}, {'br': None, 'i': 'z≦', '0.5≦2.'}], '((Ca, Sr), Eu, La)AlSiAlNO, and parameters: t, u, x, and z (wherein t+u+x=1) satisfy condition4. The phosphor according to wherein the parameter x satisfies ...

PHOSPHOR AND LIGHT-EMITTING EQUIPMENT USING PHOSPHOR

Phosphors include a CaAlSiNfamily crystal phase, wherein the CaAlSiNfamily crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb. 1. Light-emitting equipment , comprising at least one light source , the light source comprising at least one light-emitting source and a phosphor , wherein:the light-emitting source emits a light having a wavelength of 330 to 500 nm; andthe phosphor comprises an inorganic compound which is a composition containing at least M Element, A Element, D Element, E Element, and X Element;the M Element is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb;the A Element is one or two or more elements selected from the group consisting of divalent metal elements other than M Element;the D Element is one or two or more elements selected from the group consisting of tetravalent metal elements;the E Element is one or two or more elements selected from the group consisting of trivalent metal elements;the X Element is one or two or more elements selected from the group consisting of O, N, and F;the M Element comprises at least Eu;the A Element comprises at least Ca or at least Ca and Sr;the D Element comprises at least Si;the E Element comprises at least Al;the X Element comprises at least N; and {'br': None, 'sub': a', 'b', 'c', 'd', 'e, 'MADEX'}, 'the inorganic compound is a composition given bywhere:a+b=1;0.00001≤a≤0.1;0.5≤c≤1.8;0.5≤d≤1.8;0.8×(2/3+4/3×c+d)≤e; ande≤1.2×(2/3+4/3×c+d).2. The light-emitting equipment according to claim 1 , wherein the light-emitting source emits a light having a wavelength of 420 to 500 nm.3. The light-emitting equipment according to claim 2 , wherein the phosphor further comprises at least one of:a phosphor having an emission peak at a wavelength of 500 to 570 nm; anda phosphor having an emission peak at a wavelength of 550 to 600 nm.4. The light-emitting equipment according ...

METHOD FOR THE PREPARATION OF LITHIUM SILICATE GLASSES AND LITHIUM SILICATE GLASS CERAMICS

The invention relates to a method for the preparation of a lithium silicate glass or a lithium silicate glass ceramic which comprise cerium ions and are suitable in particular for the preparation of dental restorations, the fluorescence properties of which largely correspond to those of natural teeth. 1. Method for the preparation of a lithium silicate glass , a lithium silicate glass with nuclei which are suitable for forming lithium metasilicate and/or lithium disilicate crystals , or a lithium silicate glass ceramic , which comprises a step in which a melt of a starting glass which comprises cerium ions is reacted with at least one reducing gas.2. Method according to claim 1 , wherein the gas comprises hydrogen or comprises hydrogen and nitrogen.3. Method according to claim 1 , in which the starting glass comprises up to 5.0 wt.-% alkaline earth metal oxide.4. Method according to claim 3 , wherein the alkaline earth metal oxide is CaO claim 3 , BaO claim 3 , MaO claim 3 , SrOor a mixture thereof.7. Method according to claim 1 , in which the starting glass furthermore comprises terbium ions.8. Method according to for the preparation of a lithium silicate glass with nuclei which are suitable for forming lithium metasilicate and/or lithium disilicate crystals.9. Method according to for the preparation of a lithium silicate glass ceramic which comprises lithium metasilicate as main crystal phase and/or comprises more than 10 vol.-% lithium metasilicate crystals.10. Method according to claim 9 , wherein the lithium metasilicate glass ceramic comprises more than 20 vol.-% lithium metasilicate crystals.11. Method according to for the preparation of a lithium silicate glass ceramic which comprises lithium disilicate as main crystal phase and/or comprises more than 10 vol.-% lithium disilicate crystals.12. Method according to claim 11 , wherein the lithium silicate glass ceramic comprises more than 20 vol.-% lithium disilicate crystals.13. Method according to claim 1 , in ...

MECHANOLUMINESCENT MATERIAL AND USE APPLICATIONS THEREOF, RAW MATERIAL COMPOSITION FOR MECHANOLUMINESCENT MATERIAL, AND METHOD FOR PRODUCING MECHANOLUMINESCENT MATERIAL

The present invention aims to provide a mechanoluminescent material which is excellent in mechanoluminescent properties and can achieve a mechanoluminescence intensity sufficiently suited to practical use, a raw material composition for producing the mechanoluminescent material, and a method for producing a mechanoluminescent material. The mechanoluminescent material of the present invention includes strontium aluminate as a base material, a Eu ion, and at least one ion selected from the group consisting of Nd, Dy, and Ho. An amount of the Eu ion contained in the mechanoluminescent material is 0.0001 to 0.1 mol per mole of the strontium aluminate. An amount of the at least one ion selected from the group consisting of Nd, Dy, and Ho contained in the mechanoluminescent material is, as the sum of amounts of the three ions Nd, Dy, and Ho, 0.0001 to 0.01 mol per mole of the strontium aluminate. The present invention also provides a raw material composition for a mechanoluminescent material used for synthesizing the mechanoluminescent material, a mechanoluminescent coating composition and a resin composition each containing the mechanoluminescent material, and applied articles such as mechanoluminescent articles formed from the resin composition. 1. A mechanoluminescent material comprisingstrontium aluminate as a base material,a Eu ion, andat least one ion selected from the group consisting of Nd, Dy, and Ho,an amount of the Eu ion contained in the mechanoluminescent material being 0.0001 to 0.01 mol per mole of the strontium aluminate,an amount of the at least one ion selected from the group consisting of Nd, Dy, and Ho contained in the mechanoluminescent material being, as the sum of amounts of the three ions Nd, Dy, and Ho, 0.0001 to 0.01 mol per mole of the strontium aluminate.2. The mechanoluminescent material according to claim 1 ,wherein the amount of the Eu ion contained in the mechanoluminescent material is 0.0005 to 0.005 mol per mole of the strontium aluminate ...

OXYNITRIDE LUMINESCENT MATERIAL, PREPARATION METHOD, LED LIGHT SOURCE MANUFACTURED THEREBY

The present invention relates to an oxynitride luminescent material, a preparation method, and an LED light source manufactured thereby. Chemical compositions of the luminescent material are M1 a M2 b Si c O d N e:xEu 2+, M1 being one or two or a combination of more than two of elements: Mg, Ca, Sr, Ba, and Zn; M2 being one or a combination of two of elements: Tb and Tm; a, b, c, d, e and x being molar coefficients of atoms, and 1≦a≦4, 0.001≦b≦0.6, 0.8≦c≦1.2, 0 Подробнее

Yellow fluorescent substance, light-emitting device, illumination device, and vehicle

The present invention provides an oxynitride silicate fluorescent substance capable of output a light having a high luminance even when irradiated by an exciting light having a high energy density. The present invention is a yellow fluorescent substance represented by a chemical formula (Ba 1-x-y-z ,Sr x ) a Si b O c N d :Eu 2+ y ,Y 3+ z (0.9≦a≦1.1, 1.9≦b≦2.1, 1.9≦c≦2.1, 1.9≦d≦2.1, 0≦x≦1, 0<y<0.01, and 0≦z<0.01).

NITROXIDE FLUORESCENT POWDER AND METHOD FOR PREPARING SAME, NITROXIDE ILLUMINANT, AND LUMINESCENT DEVICE

The present invention discloses a nitroxide fluorescent powder comprising an inorganic compound containing M, A, B, O, N, and R elements; in which the M element is at least one of Ca, Sr, Ba, Mg, Li, Na, and K, the A element is at least one of B, Al, Ga, and In, the B element is at least one of C, Si, Ge, and Sn, the R element is at least one of Ce, Eu, Lu, Dy, Gd, and Ho, characterized in that the inorganic compound forms a crystal in a crystalline phase, and the oxygen atom content in the crystal in a crystalline phase is in an increasing structural distribution from a core to surface of the crystal. The nitroxide fluorescent powder and the nitroxide illuminant of the present invention have the advantages of good chemical stability, good aging and light decay resistance, and high luminescent efficiency, and are useful for various luminescent devices. The preparation method of the present invention is easy and reliable and useful for industrial mass production. 1. A nitroxide fluorescent powder comprising an inorganic compound containing M , A , B , O , N , and R elements; in which the M element is at least one of Ca , Sr , Ba , Mg , Li , Na , and K , the A element is at least one of B , Al , Ga , and In , the B element is at least one of C , Si , Ge , and Sn , the R element is at least one of Ce , Eu , Lu , Dy , Gd , and Ho , wherein the inorganic compound forms a crystal in a crystalline phase , and the oxygen atom content in the crystal in a crystalline phase is in an increasing structural distribution from a core to surface of the crystal.2. The nitroxide fluorescent powder of claim 1 , wherein the increasing structural distribution means that an inner core zone claim 1 , a transition zone claim 1 , and a crystal surface layer zone of the crystal in a crystalline phase are respectively formed depending on the distribution of the oxygen atom content in the crystal in a crystalline phase; the oxygen atom content in the inner core zone is in a gently increasing ...

White light emitting diode (led) lighting device driven by pulse current

A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %:30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.

PHOSPHOR, METHOD FOR PRODUCING SAME, LIGHT-EMITTING DEVICE, AND IMAGE DISPLAY APPARATUS

Provided is a chemically and thermally stable phosphor having different light-emitting characteristics than a conventional phosphor and having high light-emitting intensity even when combined with an LED of 410 nm or lower. The phosphor comprises an inorganic compound in which an inorganic crystal including A element, D element, X element (A is one or more elements selected from Mg, Ca, Sr, and Ba; D is one or more elements selected from Si, Ge, Sn, Ti, Zr, and Hf; and X is one or more elements selected from O, N, and F), and, if necessary, E element (where E is one or more elements selected from B, Al, Ga, In, Sc, Y, and La) includes Li element and M element (where M is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). 1. A phosphor comprising an inorganic compound in which an inorganic crystal including at least an A element , a D element , and an X element (where A is one or two or more elements selected from the group consisting of Mg , Ca , Sr , and Ba; D is one or two or more elements selected from the group consisting of Si , Ge , Sn , Ti , Zr , and Hf; and X is one or two or more elements selected from the group consisting of O , N , and F) , further including , if necessary , an E element (where E is one or two or more elements selected from the group consisting of B , Al , Ga , In , Sc , Y , and La) , and comprising any of (1) a crystal represented by A(D , E)X; (2) a SrSiNcrystal or a crystal having a same crystal structure as the SrSiNcrystal; or (3) a BaSiNcrystal or a crystal having a same crystal structure as the BaSiNcrystal , comprises a Li element and an M element (where M is one or two or more elements selected from the group consisting of Mn , Ce , Pr , Nd , Sm , Eu , Tb , Dy , and Yb)wherein the inorganic compound emits white color fluorescence.2. The phosphor according to wherein the Li element and the M element are solid-solved into the inorganic crystal.3. The phosphor according to wherein the Li element is solid- ...

SCINTILLATOR SINGLE CRYSTAL, HEAT TREATMENT PROCESS FOR PRODUCTION OF SCINTILLATOR SINGLE CRYSTAL, AND PROCESS FOR PRODUCTION OF SCINTILLATOR SINGLE CRYSTAL

The scintillator single crystal of the invention comprises a cerium-activated orthosilicate compound represented by the following formula (1). 2. A scintillator single crystal according to claim 1 , wherein Ln is Gd claim 1 , a represents a value of greater than 0 and less than 1 claim 1 , and Lm is at least one element selected from Tb and Tm.3. A scintillator single crystal according to claim 1 , wherein Ln is Y and a represents a value of greater than 0 and less than 1.4. A scintillator single crystal according to claim 1 , wherein Ln is Y claim 1 , a represents a value of greater than 0 and no greater than 0.2 claim 1 , and x represents a value of greater than 1.6 and less than 2.5. A scintillator single crystal according to claim 1 , which contains an added element which is at least one element selected from among elements belonging to Group 2 (Group IIa) of the Periodic Table claim 1 , at 0.00005-0.1 mass % based on the total mass of the single crystal.6. A scintillator single crystal according to claim 1 , which contains an added element which is at least one element selected from among elements belonging to Group 13 (Group IIIb) of the Periodic Table claim 1 , at 0.00005-0.1 mass % based on the total mass of the single crystal. This application is a Continuation of U.S. application Ser. No. 12/822,679, filed Jun. 24, 2010, which is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2009-154105 and Japanese Patent Application No. 2010-103956, filed on Jun. 29, 2009 and Apr. 28, 2010, respectively, the entire contents of which are incorporated herein by reference.1. Field of the InventionThe present invention relates to a scintillator single crystal used in a single-crystal scintillation detector (scintillator) for gamma ray or other radiation in the fields of radiology, physics, physiology, chemistry, mineralogy and oil exploration, such as for medical diagnostic positron CT (PET), cosmic radiation observation, ...

Phosphor, Method For Manufacturing Same, Light Emitting Device, and Image Display Device

A chemically and thermally stable phosphor having unconventional light emitting properties and high light emitting intensity with an LED of 470 nm or less, includes an inorganic compound comprising: a crystal designated by A(D,E)X, a crystal designated by SrSiONor an inorganic crystal having the identical crystal structure of the SrSiONcrystal, which comprises A element, D element, X element, and optionally E element if necessary (A is one or more kinds selected from Li, Mg, Ca, Sr, and Ba; D is one or more kinds selected from Si, Ge, Sn, Ti, Zr, and Hf; X is one or more kinds selected from O, N, and F; and E is one or more kinds selected from B, Al, Ga, In, Sc, Y, and La.), into which M element is solid-solved (M is one or more kinds selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb.). 1. A phosphor comprising: an inorganic compound comprising:{'sub': 3', '8', '4', '10', '3', '8', '4', '10, 'a crystal designated by SrSiONor an inorganic crystal having an identical crystal structure to a crystal structure of the crystal designated by SrSiON, into which M element is solid-solved (here, M is one or more kinds of elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb),'}wherein the crystal or the inorganic crystal comprises: at least A element, D element, and X element (here, A is one or more kinds of elements selected from the group consisting of Li, Mg, Ca, Sr, and Ba; D is one or more kinds of elements selected from the group consisting of Si, Ge, Sn, Ti, Zr, and Hf; and X is one or more kinds of elements selected from the group consisting of O, N, and F), andwherein the crystal or the inorganic crystal, if necessary, comprises: E element (here, E is one or more kinds of elements selected from the group consisting of B, Al, Ga, In, Sc, Y, and La).2. The phosphor according to claim 1 ,{'sub': 3', '8', '4', '10', '3', '8', '14, 'wherein the inorganic crystal having the crystal structure identical to the crystal structure of the ...

PHOSPHORS AND PHOSPHOR-CONVERTED LEDS

The present invention relates to alkaline earth aluminate phosphors, to a process for the preparation thereof and to the use thereof as conversion phosphors. The present invention also relates to an emission-converting material comprising at least the conversion phosphor according to the invention, and to the use thereof in light sources, in particular pc-LEDs (phosphor converted light emitting devices). The present invention furthermore relates to light sources, in particular pc-LEDs, and to lighting units which comprise a primary light source and the emission-converting material according to the invention. 1. Compound of formula (1) ,{'br': None, 'sub': a-d-v-y', 'y', 'b-e', 'e', 'v', 'c-e-y', 'x+y', 'e+v, 'sup': 1', '2', '3, '(AE)AMMMEXN.D\u2003\u2003Formula(1)'}where the following applies to the symbols and indices used:AE is selected from the group consisting of Ca, Sr, Ba or mixtures of these elements;D is selected from the group consisting of Eu, Mn, Yb, Sm, Ce or mixtures of these elements;A is selected from the group consisting of Na, K or mixtures of these elements;{'sup': '1', 'Mis selected from the group consisting of B, Al, Ga, In, Tl, Sc or mixtures of these elements;'}{'sup': '2', 'Mis selected from the group consisting of C, Si, Ge, Sn or mixtures of these elements;'}{'sup': '3', 'Mis selected from the group consisting of Y, Lu, La or mixtures of these elements;'}E is selected from the group consisting of O, S, Se, Te or mixtures of these elements;X is selected from the group consisting of F, Cl, Br, I or mixtures of these elements;N is a trivalent nitride ion;0.65≦a≦1;0≦y≦0.1a where a is as defined above;0≦v≦0.1a where a is as defined above;10.667≦b≦11.133;17.00≦c≦17.35;0≦x≦5;0≦e≦5;0.0584≦a/b≦0.0938;0.0375≦a/c≦0.0588;2a+3b=2c+x;{'sup': '1', 'with the proviso that x≠0 or y≠0 or v≠0 or e≠0 when AE=Ba and M=Al.'}2. Compound according to wherein AE is selected from the group consisting of Ba or a mixture of Ba and Sr or a mixture of Ba and Ca claim 1 , ...

Blue light-emitting phosphor and light emitting device using same

A blue light-emitting Eu-activated silicate phosphor having a constitutional formula of Sr 3 MgSi 2 O 3 which contains Eu in an amount of 0.001 to 0.2 mol per one mole of Mg and further a rare earth metal element selected from the group consisting of Sc, Y, Gd, Tb and La in an amount of 0.0001 to 0.03 mol, per one mole of Mg, gives an emission with enhanced emission strength when it is excited with a light having a wavelength in the region of 350 to 430 nm.

SINGLE-PHASE AND FULL-COLOR PHOSPHOR

A composition of matter including a phosphor having an emission peak in each of a blue, green, and red color region of the Electromagnetic spectrum, wherein the phosphor is excitable by light having a wavelength between 350 nanometers (nm) and 420 nm. 1. A composition of matter , comprising: a phosphor having an emission peak in each of a blue , green , and red color region of the Electromagnetic spectrum , wherein the phosphor is excitable by light having a wavelength between 350 nanometers (nm) and 420 nm.2. The composition of matter according to claim 1 , wherein the blue emission peak is at a wavelength between 430 nm and 470 nm.3. The composition of matter according to claim 1 , wherein the green emission peak is at a wavelength between 520 nm and 560 nm.4. The composition of matter according to claim 1 , wherein the red emission peak is at a wavelength between 600 nm and 660 nm.5. The composition of matter according to claim 1 , comprising a crystal phase having a chemical composition represented by the formula{'br': None, 'sup': 1', '2', '3', '4', '5, 'sub': a-x-y', 'x', 'y', 'b-c-z', 'c', 'z', 'd-e', 'e', 'f, 'MEuTbMMMnMMO, wherein{'sup': '1', 'Mis at least one metal element selected from Ca, Sr and Ba,'}{'sup': 2', '3, 'Mis Mg, Mis at least one metal element selected from Li and Na,'}{'sup': '4', 'Mis at least one element selected from the group 14 of the Periodic table,'}{'sup': '5', 'Mis at least one element selected from the group 13 of the Periodic table, and'}2.7≦a≦3.3, 0.7≦b≦1.3, 0 Подробнее

Rare earth aluminum garnet type phosphor and light-emitting device using the same

The present invention provides a new phosphor with a controllable emission wavelength without using a number of rare and expensive raw materials in forming the composition. The phosphor includes a compound including a fluorescent ion and having a garnet structure including a rare earth element, aluminum, and oxygen. The compound has such a composition that a combination of the rare earth element and the aluminum of the compound is partially replaced with a combination of alkaline earth metal and zirconium (Zr) or alkaline earth metal and hafnium (Hf).

MULTICOLOR LIGHT-STORING CERAMIC FOR FIRE-PROTECTION INDICATION AND PREPARATION METHOD THEREOF

A multicolor light-storing ceramic for fire-protection indication and a preparation method thereof are provided. The preparation method includes: adding a glass based raw material, a light-storing powder, a dispersant and an alumina powder into a granulator, adding water mixed with a pore-forming agent and then mechanically stirring for granulation; adding a plasticizer after the stirring of 4˜8 h, and continuing the stirring for 1˜3 h to thereby obtain a mixture; packing the mixture into a mold and performing tableting; demolding and obtaining a light-storing self-luminous quartz ceramic by drying and firing using a kiln; printing a pattern onto a surface of the ceramic and then curing to obtain a light-storing ceramic for indication sign. Using an industrial waste glass has advantages of low sintering temperature and green environmental protection; dispersed pores and alumina introduced as scattering sources improves light absorption efficiency, fluorescence output phase ratio and light transmission of the ceramic. 1. A preparation method of a multicolor light-storing ceramic for fire-protection indication , comprising:step (1) adding a glass based raw material, a light-storing powder, a dispersant and an alumina powder into a granulator, adding water mixed with a pore-forming agent into the granulator, and then mechanically stirring for granulation by the granulator; adding a plasticizer into the granulator after the stirring of 4˜8 hours (h), and continuing the stirring for 1˜3 h to thereby obtain a mixture; wherein a stirring speed of the stirring is in a range from 100 radians per minute (rad/min) to 300 rad/min, and the glass based raw material comprises a recycled float glass waste or a recycled industrial waste glass;step (2) packing the mixture obtained in the step (1) into a mold, performing tabletting to the mixture packed into the mold by an automatic tablet presser, and then demolding to obtain a green body and subsequently delivering the green body to ...

TRANSPARENT FLUORESCENT SIALON CERAMIC AND METHOD OF PRODUCING SAME

Provided are a transparent fluorescent sialon ceramic having fluorescence and optical transparency; and a method of producing the same. Such a transparent fluorescent sialon ceramic includes a sialon phosphor which contains a matrix formed of a silicon nitride compound represented by the formula M(Si,Ai)(N,O)(here, M represents at least one selected from the group consisting of Li, alkaline earth metals, and rare earth metals, 0≦x/z<3, and 0 Подробнее

a-SIALON FLUORESCENT BODY AND LIGHT-EMITTING DEVICE

An α-sialon phosphor represented by general formula: MEu(Si,Al)(O,N), where M represents at least one or more elements selected from Li, Mg, Ca, Y and a lanthanoid (excluding La and Ce), 0 Подробнее

PHOSPHOR CONVERTED WHITE LIGHT EMITTING DEVICES AND PHOTOLUMINESCENCE COMPOUNDS FOR GENERAL LIGHTING AND DISPLAY BACKLIGHTING

A phosphor converted white light emitting device comprises a solid-state light emitter (LED) operable to generate blue light with a dominant wavelength in range 440 nm to 470 nm; yellow to green-emitting phosphor operable to generate light with a peak emission wavelength in a range 500 nm to 550 nm; and a red-emitting manganese-activated fluoride phosphor such a manganese-activated potassium hexafluorosilicate phosphor (KSiF:Mn). The yellow to green and red-emitting phosphors are incorporated as a mixture and dispersed throughout a light transmissive material with an index or refraction of 1.40 to 1.43. In some embodiments the light transmissive comprises a dimethyl-based silicone. The device can further comprise an orange to red-emitting phosphor operable to generate light with a peak emission wavelength of 580 nm to 620 nm. 1. A white light emitting device comprising:a solid-state light emitter operable to generate blue light with a dominant wavelength in a range 440 nm to 470 nm;a yellow to green-emitting phosphor excitable by blue light and operable to generate light with a peak emission wavelength in a range 500 nm to 575 nm;a red-emitting manganese-activated complex fluoride phosphor; anda light transmissive material with an index of refraction of 1.40 to 1.43 comprising a mixture of the yellow to green-emitting phosphor and red-emitting manganese-activated fluoride phosphor.2. The white light emitting device of claim 1 , wherein the red-emitting manganese-activated fluoride phosphor comprises a manganese-activated potassium hexafluorosilicate phosphor.3. The white light emitting device of claim 1 , wherein the light transmissive material comprises a methyl-based silicone.4. The white light emitting device of claim 1 , wherein the yellow to green-emitting phosphor comprises a cerium-activated garnet phosphor.5. The white light emitting device of claim 4 , wherein the cerium-activated garnet phosphor is represented by the chemical formula Y(AlGa)O:Cewhere 0.01< ...

CORE-SHELL STRUCTURED SILICATE LUMINESCENT MATERIAL AND PREPARATION METHOD THEREFOR

A core-shell structured silicate luminescent material and a preparation method thereof. The molecular formula of the luminescent material is: MLnSiO:xRE@SiO; where @ represents a coating, where M is one or two elements among Li, Na, and K, where Ln is one or two elements among Y, Sc, Lu and La, where the value of x is 0 Подробнее

SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT IN A TETRAVALENT STATE

A scintillation compound can include a rare earth element that is in a divalent (RE) or a tetravalent state (RE). The scintillation compound can include another element to allow for better change balance. The other element may be a principal constituent of the scintillation compound or may be a dopant or a co-dopant. In an embodiment, a metal element in a trivalent state (M) may be replaced by REand a metal element in a divalent state (M). In another embodiment, Mmay be replaced by REand M. In a further embodiment, Mmay be replaced by a REand a metal element in a monovalent state (M). The metal element used for electronic charge balance may have a single valance state, rather than a plurality of valence states, to help reduce the likelihood that the valance state would change during formation of the scintillation compound. 1. A scintillation compound comprising a rare earth element in a tetravalent state at a concentration of at least approximately 10 ppm atomic of the scintillation compound , wherein the scintillation compound is not a rare earth silicate compound.2. (canceled)3. The scintillation compound of claim 1 , wherein the rare earth element in the tetravalent state is at a concentration of at least approximately 20 ppm atomic of the scintillation compound.4. The scintillation compound of claim 1 , wherein the rare earth element in the tetravalent state is at a concentration no greater than approximately 5% atomic of the scintillation compound.5. The scintillation compound of claim 1 , wherein the rare earth element is a particular rare earth element in the tetravalent state that is at least approximately 5% of the total content of the particular rare earth element within the rare earth silicate compound.6. The scintillation compound of claim 1 , wherein the rare earth element is a particular rare earth element in the tetravalent state that is no greater than 100% of the total content of the particular rare earth element within the scintillation compound.7. ...

BLUE EMITTING PERSISTENT PHOSPHOR COMPOSITIONS AS DIAGNOSTIC REPORTERS

Disclosed are methods of detecting one or more analytes in a sample by: (1) associating the sample with a surface that includes an analyte binding agent to result in the immobilization of the analytes on the surface; (2) contacting the analyte with a composition that includes at least one phosphor compound with an affinity for the analyte; (3) formation of immobilized analyte binding agent-analyte-phosphor complexes on the surface; (4) separating unbound phosphor compounds from the immobilized complexes; (5) detecting a presence or absence of a luminescence signal from the immobilized complexes; and (6) correlating the luminescence signal to the presence or absence of the analyte in the sample. The phosphor compound may include (SrBa)MgSiO:EuDy, (SrBa)MgSiO:EuDy, (SrBa)MgSiO:EuDy, (SrBa)MgSiO:Eu, and combinations thereof. Additional phosphor compounds may also be utilized, such as [AE]MgSiO:Eu, [AE]AlO:Eu, Dy, and combinations thereof, where AE is at least one of Ca, Sr, or Ba. 1. A method for detection of at least one analyte of interest in a sample , wherein the method comprises: 'wherein the associating results in the immobilization of at least some of the analytes present in the sample on the surface;', 'associating the sample with a surface comprising an analyte binding agent,'} wherein the at least one phosphor compound has an affinity for the analyte,', {'sub': 1-δ', 'δ', '2-j-k', '2', '7', 'j', 'k', '1-δ', 'δ', '2-x', '2', '7', '1-δ', 'δ', '2', '2', '7', '1-δ', 'δ', '2-x', '2', '7, 'sup': 2+', '3+', '2+', '3+', '2+, 'claim-text': wherein δ is between 0 and 0.5,', 'wherein j and k are greater than about 0.0005 and less than about 0.3, and', 'wherein x is an integer between 0 and 1;, 'wherein the at least one phosphor compound is selected from the group consisting of (SrBa)MgSiO:EuDy, (SrBa)MgSiO:EuDy, (SrBa)MgSiO:EuDy, (SrBa)MgSiO:Eu, and combinations thereof,'}], 'contacting the analyte present in the sample with a composition comprising at least one ...

CONVERSION PHOSPHORS

The present invention relates to compounds of formula I, 1. Compound of formula I ,{'br': None, 'sup': I', 'II', 'III', 'IV, 'sub': 3', '3', '3', '2', '12, 'MMMMNO:Eu\u2003\u2003I'}wherein{'sup': 'I', 'Mdenotes one or more elements selected from Y, La, Gd and Lu,'}{'sup': 'II', 'Mdenotes one or more elements selected from the group of Be, Mg, Ca, Sr, Ba and/or Zn.'}{'sup': 'III', 'Mdenotes one or more elements selected from the group of B, Al, and Ga,'}{'sup': 'IV', 'Mdenotes one or more elements selected from the Si and Ge.'}2. The compound according to claim 1 , characterized in that the compound is selected from the group of compounds of formula II claim 1 ,{'br': None, 'sup': I', 'II', 'III', 'IV', '2+, 'sub': 3', '3', '3', '2', '12, 'MMMMNO:Eu\u2003\u2003II'}wherein{'sup': I', 'II', 'III', 'IV, 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'M, M, M, Mhave the same meanings as given in .'}3. The compound according to claim 1 , characterized in that the compound is selected from the group of compounds of formula III claim 1 ,{'br': None, 'sup': I', 'II', 'III', 'IV', '2+, 'sub': 3-x', '3', '3', '2', '12', 'x, 'MMMMNO:Eu\u2003\u2003III'}wherein{'sup': I', 'II', 'III', 'IV, 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'M, M, M, and Mhave the same meanings as given in , and 0 Подробнее

Phosphors

The present invention relates to silicate phosphors, to a process for the preparation thereof and to the use thereof as conversion phosphors. The present invention also relates to an emission-converting material comprising at least the conversion phosphor according to the invention, and to the use thereof in light sources, in particular pc-LEDs (phosphor converted light emitting devices). The present invention furthermore relates to light sources, in particular pc-LEDs, and to lighting units which comprise a primary light source and the emission-converting material according to the invention.

METHOD FOR MANUFACTURING LONG LASTING PHOSPHORESCENT FABRICS AND FABRICS OBTAINED FROM THE SAME

A method for manufacturing long lasting phosphorescent fabrics and articles of clothing including fabric for use in fields such as security, domestic, sports, health, professional, etc., includes (i) preparing a composition for dyeing having a strontium aluminate pigment doped with europium and dysprosium; (ii) coating a starting fabric with the composition by air knife coating or cylinder; (iii) drying; and (iv) polymerizing. The fabrics thus obtained have long lasting phosphorescent properties and a high resistance to washing, maintaining the factory specifications of the starting fabric with respect to its mechanical properties, comfort, breathability and/or high visibility properties, if relevant. 1. A method for obtaining a long lasting phosphorescent fabric comprising the following steps:a) Preparing a composition for dyeing having a strontium aluminate pigment doped with europium and dysprosium,b) Coating the starting fabric with said composition by air knife coating or cylinder,c) Drying, andd) Polymerizing.2. The method according to claim 1 , wherein the pigment is used in powder form claim 1 , and where the particles have a size comprised between 1 and 100 microns.3. The method according to claim 1 , wherein the particles have a d50 between 10 and 20 microns.4. The method according to claim 1 , wherein the particles have a d90<30 microns.5. The method according to claim 3 , where the particles of the pigment are encapsulated by coating them with a translucent material in the visible-UV range.6. The method according to claim 5 , where the translucent or transparent material is SiO.7. The method according to claim 1 , wherein the composition for dyeing comprises between 1% and 30% claim 1 , by weight of pigment claim 1 , between 40% and 98% by weight of a base paste and between 1% and 30% by weight of a fixative claim 1 , where the base paste comprises an aqueous suspension of polyurethane and the fixative is a composition based on melamine- formaldehyde ...

LIGHT SOURCE DEVICE AND LIGHT EMITTING DEVICE

Provided is a light source device including: at least one light emitting element of at least one type; at least one far-red phosphor that, when excited by output light from the light emitting element, emits light having a peak in a wavelength range of 680 nm or more to less than 780 nm; and at least one phosphor that, when excited by the output light from the light emitting element, emits light having a peak in a wavelength range different from the wavelength range of the light emitted from the far-red phosphor. The spectrum of light emitted from the light source device has characteristic A below. This light source device has sufficient emission intensity over the entire visible range, i.e., over a wavelength range of from 400 nm to 750 nm inclusive. 1. A light source device comprising: at least one light emitting element of at least one type; at least one far-red phosphor that , when excited by output light from the at least one light emitting element , emits light having a peak in a wavelength range of 680 nm or more to less than 780 nm;and at least one phosphor that, when excited by the output light from the at least one light emitting element, emits light having a peak in a wavelength range different from the wavelength range of the light emitted from the far-red phosphor,wherein the spectrum of light emitted from the light source device has the following characteristic A:characteristic A: the ratio of a minimum emission intensity to a maximum emission intensity in a wavelength range of from 400 nm to 750 nm inclusive is 20% or more.2. The light source device according to claim 1 , wherein the at least one far-red phosphor comprises (LnCr)MO(where Ln is at least one element selected from Y claim 1 , La claim 1 , Gd claim 1 , and Lu;is at least one element selected from Al, Ga, and In; and x is a number satisfying 0.005≤x≤0.2).3. The light source device according to claim 2 , wherein claim 2 , when light is emitted from all of the at least one light emitting ...

PHOSPHOR, PRODUCTION METHOD FOR SAME, LIGHT-EMITTING DEVICE, IMAGE DISPLAY DEVICE, PIGMENT, AND ULTRAVIOLET ABSORBER

A phosphor having different light emission characteristics from the conventional phosphor, having high emission intensity and chemical and thermal stability, combined with LED of less than 450 nm. This phosphor includes an inorganic compound comprising: a crystal represented by BaSiAlN, an inorganic crystal having the same crystal structure as BaSiAlNcrystal, or a solid solution crystal thereof, comprising A element, D element, E element, and X element (A is one or more elements selected from Li, Mg, Ca, Sr, Ba, and La; D is one or more elements selected from Si, Ge, Sn, Ti, Zr, and Hf; E is one or more elements selected from B, Al, Ga, In, Sc, and Y; X is one or more elements selected from O, N, and F), into which M element is solid-solved (M is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). 1. A phosphor comprising: an inorganic compound comprising: a crystal represented by BaSiAlN , an inorganic crystal having a same crystal structure as the crystal represented by BaSiAlN , or a solid solution crystal thereof , which comprises at least an A element , a D element , an E element , and an X element (wherein A is one or two or more kinds of elements selected from a group consisting of Li , Mg , Ca , Sr , Ba , and La; D is one or two or more kinds of elements selected from a group consisting of Si , Ge , Sn , Ti , Zr , and Hf; E is one or two or more kinds of elements selected from a group consisting of B , Al , Ga , In , Sc , and Y; X is one or two or more kinds of elements selected from a group consisting of O , N , and F) , into which an M element is solid-solved (wherein M is one or two or more kinds of elements selected from a group consisting of Mn , Ce , Pr , Nd , Sm , Eu , Tb , Dy , and Yb).2. The phosphor according to claim 1 , wherein: the inorganic crystal having the same crystal structure as the crystal represented by BaSiAlNcomprises a crystal represented by A(D claim 1 ,E)X; at least claim 1 , the A element includes at least ...

SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT AND A PROCESS OF FORMING THE SAME

A scintillation compound can include a rare earth element that is in a divalent (RE) or a tetravalent state (RE). The scintillation compound can include another element to allow for better change balance. The other element may be a principal constituent of the scintillation compound or may be a dopant or a co-dopant. In an embodiment, a metal element in a trivalent state (M) may be replaced by RE and a metal element in a divalent state (M). In another embodiment, M may be replaced by RE and M. In a further embodiment, M may be replaced by a RE and a metal element in a monovalent state (M). The metal element used for electronic charge balance may have a single valance state, rather than a plurality of valence states, to help reduce the likelihood that the valance state would change during formation of the scintillation compound. 1. An apparatus including a luminescent material comprising a rare earth (Ln) silicate doped with an element RE different from Ln , RE being chosen among Ce , Pr , Tb , wherein the element RE is at least partially in its 4+ oxidation state (RE) , the quantity of RE in the luminescent material being between 0.0001% and 0.1% in mass.2. The apparatus of claim 1 , wherein the quantity of RE in the luminescent material is between 0.0005% and 0.05% in mass.3. The apparatus of claim 1 , wherein a molar ratio RE/(RE+RE) is between 0.05 and 1.4. The apparatus of claim 1 , wherein the quantity of RE in the luminescent material is between 0.001% and 0.1% in mass.5. The apparatus of claim 1 , wherein the luminescent material has the formula{'br': None, 'sub': (2-z-x1-x2)', 'x1', 'x2', 'z', 'v', '(p-v)', '(3+2p), 'sup': 3+', '4+, 'LnREREMM′SiO, whereinLn represents a rare earth different than RE;M represents a divalent alkaline-earth element;M′ represents a trivalent element such as Al, Ga, Sc, In, or any combination thereof;(z+v) is greater than or equal to 0.0001 and lower than or equal to 0.2;z is greater than or equal to 0 and lower than or equal to 0 ...

SMOOTHING PHOSPHORS FOR AC LED LIGHTING

Disclosed are smoothing phosphors for AC LED lighting that are capable of prolonging the light emission time of an AC LED (or array of AC LEDs) during a ½ cycle response to a phase change of the alternating current to substantially reduce flicker. The smoothing phosphor of the present teachings comprises a matrix represented by the formula: MXAlO:MnO, SiO, Eu, R, Liwherein M is at least one of LaO, CeO, GdO, LuO, BaOF, SrOF, CaOF, BaOCl, SrOCl, CaOCl, BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise LaO, CeO, GdO, LuO, BaOF, SrOF, CaOF, BaOCl, SrOCl, or CaOCl; X is at least one of MgO or ZnO; R is at least one of Sm, Pr, Tb, Dy, Er, or Ho; m=0 to 2; n=4 to 11; x=0.005 to 1; y=0.005 to 1; p=0 to 1; k=0 to 0.2; r=0 to 0.2; and v=0 to 0.2. 1. A smoothing phosphor for AC LED lighting , said smoothing phosphor comprising a matrix represented by the formula:{'br': None, 'sub': (1−k−r−v)', '(m−p)', '2(n−0.5x−0.5y)', '3(n−0.5x−0.5y)', '(x+p)', '(x+p)', 'y', '2y', 'k', 'r', 'v, 'MXAlO:MnO, SiO, Eu, R, Li'} [{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '2', '2', '2', '2', '2', '2', '2, 'M is at least one of LaO, CeO, GdO, LuO, BaOF, SrOF, CaOF, BaOCl,'}, {'sub': 2', '2', '2', '2', '2', '3', '2', '3', '2', '3', '2', '3', '2', '2', '2', '2', '2', '2', '2', '2', '2', '2', '2', '2, 'SrOCl, CaOCl, BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise LaO, CeO, GdO, LuO, BaOF, SrOF, CaOF, BaOCl, SrOCl, or CaOCl;'}, 'X is at least one of MgO or ZnO;', 'R is at least one of Sm, Pr, Tb, Dy, Er, or Ho;', 'm=0 to 2;', 'n=4 to 11;', 'x=0.005 to 1;', 'y=0.005 to 1;', 'p=0 to 1;', 'k=0 to 0.2;', 'r=0 to 0.2; and', 'v=0 to 0.2., 'wherein2. The smoothing phosphor of claim 1 , wherein M is at least one of LaO claim 1 , CeO claim 1 , GdO claim 1 , LuO claim 1 , BaOF claim 1 , SrOF claim 1 , CaOF claim 1 , BaOCl claim 1 , SrOCl claim 1 , or CaOCl claim 1 , m=0 claim 1 , n=11 claim 1 , and p=0 claim ...

ENVIRONMENT-CONTROLLING FIBERS AND FABRICS USING THE SAME

The invention discloses environment-controlling fibers and fabrics using the same, which adopts polyolefin material, optoelectronic material, thermoelectric material, piezoelectric material and catalyst material, to make fibers and fabric by melting, mixing, drawing and weaving. The fabrics are used in all kinds of environmental control products or for organic agriculture. To use green energy such as solar light energy, solar thermal energy, wind energy, hydro energy, geothermal energy and other renewable energy to stimulate the function of the special material within the fibers, so that the fabrics can remove pollutants in the environment and produce self-purification function to achieve the purpose of improving the environmental conditions or promote plant growth. 1. Environment-controlling fibers comprising a specific amount of polyolefin as a base material , a specific amount of rubber elastic material , a specific amount of optoelectronic material for receiving energies outside the fibers to produce optoelectronic effect , a specific amount of piezoelectric material for receiving energies outside the fibers to produce piezoelectric effect , a specific amount of thermoelectric material for receiving energies outside the fibers to produce thermoelectric effect and a specific amount of catalyst material being resonated by the optoelectronic effect and , the thermoelectric effect and the piezoelectric effect to increase amplitudes of the energies so as to increase the catalysis activity of the catalyst material.2. The fibers as claimed in claim 1 , wherein the specific amount of polyolefin is by weight ratio of 70˜95%; the specific amount of optoelectronic material is by weight ratio of 1%˜10%; the specific amount of piezoelectric material is by weight ratio of 1%˜5% claim 1 , the specific amount of thermoelectric material is by weight ratio of 1%˜5% and the specific amount of catalyst material is by weight ratio of 1%˜5% and the specific amount of rubber elastic ...

LIGHT-STORING FIBER WITH HIGH LUMINANCE

A high-luminance light-storing fiber is provided. A modified light-storing powder and a dispersing agent are added to a polyester material, and then prepared by kneading, granulating and spinning to obtain the light-storing fiber having fiber fineness of 1-10 dpf. The fiber luminance satisfies the following conditions: (1) after irradiation with a D65 light source at 2001 ux for 20 minutes, the initial luminance can reach 150 mcd/m2 or more; (2) after irradiation with a D65 light source at 251 ux for 25 minutes, the initial luminance can reach 50 mcd/m2 or more. 1. A light-storing fiber with high luminance produced by melt spinning with a light-storing masterbatch , characterized in that the light-storing masterbatch includes the following components , the sum of the components being 100 wt % based on the total amount:a) 50% to 95 wt % of thermoplastic polymer selected from polyester powder and polyester granules having an intrinsic viscosity (IV) of 0.2 to 2.0;{'sub': 1-x', '2', '4', 'Y', 'Z, 'b) 1% to 30 wt % of modified light-storing powder which is an aluminate doped with rare-earth elements, represented as the general formula MAlO·EuN; wherein M is Sr, Mg, Ca or Ba, N is Td, Dy, La, Ce, Mn, Sm, Gd, Pr, Lu, Ho, Y, Yb, Tm or Er; and −0.33≤X≤0.6,0.008≤Y≤0.002, 0.002≤Z≤0.005; and'}c) 0.01 to 5 wt % of antioxidants;wherein the light-storing fiber satisfies the following conditions:(1) after irradiation with a D65 light source at 2001 ux for 20 minutes, the initial luminance can reach 150 mcd/m2 or more;(2) after irradiation with a D65 light source at 25 LUX for 25 minutes, the initial luminance can reach 50 mcd/m2 or more.2. The light-storing fiber according to claim 1 , wherein the light-storing masterbatch has a pressure rise value less than or equal to 0.5 bar/g.3. The light-storing fiber according to claim 1 , wherein the light-storing fiber has a fiber fineness of 1 to 10 dpf.4. The light-storing fiber according to claim 3 , wherein the light-storing fiber has ...

NITRIDE FLUORESCENT MATERIAL AND LIGHT-EMITTING DEVICE CONTAINING SAME

The present invention belongs to the technical field of inorganic luminescent materials, particularly relates to a nitride fluorescent material, and further discloses a light-emitting device containing such a fluorescent material. The nitride fluorescent material contains a compound with a structure like MAlSiN: aR, bEu, cCe. The fluorescent material has very high physical stability and chemical stability, and the fluorescent material is better in crystallization, and thus has relatively high external quantum efficiency. When being applied to a light-emitting device, the fluorescent material can fully exert the advantages of good stability and high external quantum efficiency, and the light-emitting efficiency and stability of the light-emitting device can be further improved. 1. A nitride fluorescent material , wherein the fluorescent material contains a compound with the chemical formula MAlSiN3:aR , bEu , cCe , wherein the M element is selected from Ca element and/or Sr element;the R element is selected from at least one of Er element, Nd element, Yb element, Cr element, and Fe element; andthe parameters m, x, y, a, b and c meet the following relationships: 0.8≤m≤1.0, 0.9≤x≤1.1, 0.9≤y≤1.1, 0.001≤a≤0.20, 0≤b≤0.20 and 0≤c≤0.1.2. The nitride fluorescent material according to claim 1 , wherein the fluorescent material has the same crystal structure as CaAlSiN.3. The nitride fluorescent material according to claim 1 , wherein the M element is the Ca element and Sr element claim 1 , and a molar ratio of the Ca element to the M element is not less than 0.8.4. The nitride fluorescent material according to claim 1 , wherein the parameters b and c meet the following relationships: 0.001≤b≤0.10 and 0.001≤c≤0.05; andpreferably, 3≤b/c≤6.5. The nitride fluorescent material according to claim 1 , wherein the parameters x and y meets the following relationship: 1≤y/x≤1.3.6. The nitride fluorescent material according to claim 1 , wherein the M element is the Ca element and the R ...

OXYNITRIDE PHOSPHOR POWDER

An oxynitride phosphor powder is an α-SiAlON phosphor having a dominant wavelength of 565-577 nm and fluorescence intensity and external quantum efficiency that are high enough for practical use. The oxynitride phosphor powder comprises an α-SiAlON represented by the compositional formula: CaEuYbSiAlON(wherein 0.0 Подробнее

High Color Rendering Index and High Thermal Characteristics of Red Nitride Phosphors

The high color rendering index (CRI) and high thermal properties of the red nitride phosphor are proposed in the invention. The phosphor would keep the original crystal phase and reduce the change of crystal volume by replacing different atoms. In addition, the red nitride phosphor can be excited by an incident light with wavelength ranging from 370 nm to 470 nm, and that shows the red phosphor of the present invention can be applied in white light emitting diodes. Moreover, the red nitride phosphor proposed by the present invention includes the potential application in main peak modulation and FWHM adjustment, and would be helpful to improve the thermal stability problem of white light emitting diodes. 1. A red nitride phosphor with high color rendering index and thermal properties , being represented by following chemical formula: Sr(CaBa)SiN: Eu , wherein x and y are both greater than 0 and smaller than 2 , and the value of (x+y) being greater than 0 and smaller than 2.2. A process according to claim 1 , the red nitride phosphor with high color rendering index and thermal properties claim 1 , wherein the Sr(CaBa)SiN: Euis synthesized by MN claim 1 , SiNand EuN. The “M” in the MNis selected from the group consisting of: Ca claim 1 , Sr and Ba.3. A process according to claim 1 , the red nitride phosphor with high color rendering index and thermal properties claim 1 , wherein the value of x is greater than 0 and smaller than 1.98.4. A process according to claim 1 , the red nitride phosphor with high color rendering index and thermal properties claim 1 , wherein the Sr(CaBa)SiN: Eucan be excited by the light with the wavelength from 370 nm to 470 nm.5. A process according to claim 1 , the red nitride phosphor with high color rendering index and thermal properties claim 1 , wherein the wavelength of the incident light is ranged from 613 nm to 633 nm.687. A process according to claim 1 , the red nitride phosphor with high color rendering index and thermal properties ...

PHOSPHOR AND LIGHT-EMITTING EQUIPMENT USING PHOSPHOR

Phosphors include a CaAlSiNfamily crystal phase, wherein the CaAlSiNfamily crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb. 126-. (canceled)27. Light-emitting equipment , comprising at least one light source , the light source comprising at least one light-emitting source and a phosphor , wherein:the light-emitting source emits a light having a wavelength of 330 to 500 nm; and{'sub': 3', '3, 'the phosphor comprises at least one of a nitride phosphor comprising at least one of CaAlSiNactivated with Eu and (Ca,Sr)AlSiNactivated with Eu.'}28. The liaht-emitting equipment according to claim 27 , wherein the light-emitting source emits a light having a wavelength of 420 to 500 nm.29. The light-emitting equipment according to claim 28 , wherein the phosphor further comprises at least one of:a phosphor having an emission peak at a wavelength of 500 to 570 nm; anda phosphor having an emission peak at a wavelength orf 550 to 600 nm.30. The light-emitting equipment according to claim 27 , wherein the light-emitting source emits a light having a wavelength of 330 to 420 nm.31. The light-emitting equipment according to claim 30 , wherein the phosphor further comprises:a phosphor having an emission peak at a wavelength of 420 to 500 nm; anda phosphor having an emission peak at a wavelength of 500 to 570 nm.32. The light-emitting equipment according to claim 27 , wherein the light-emitting equipment is lighting equipment.33. The light-emitting equipment according to claim 27 , wherein the light-emitting equipment is an image display unit.34. The light-emitting equipment according to claim 27 , wherein the nitride phosphor comprises a crystal phase having a crystal structure belonging to the Cmc2space group.36. The light-emitting equipment according to claim 35 , wherein the X Element is at least one element selected from the group consisting of O and N.37. The light-emitting equipment according ...

Persistent Phosphorescent Composite Material

The invention relates to a persistent phosphorescent ceramic composite material which is a sintered dense body comprising two or more phases, a first phase consisting of at least one metal oxide and a second phase consisting of a metal oxide containing at least one activating element in a reduced oxidation state. The invention furthermore relates to a method for the preparation of a phosphorescent ceramic composite material as defined in any of the previous claims, the method comprising the following steps: preparing a mixture of a metal oxide and a phosphor; fabricating a green body from the mixture; and heat treating the green body in a reducing atmosphere. 1: A persistent phosphorescent ceramic composite material which is a sintered dense body comprising two or more phases ,a first phase consisting of at least one metal oxide anda second phase consisting of a metal oxide containing at least one activating element in a reduced oxidation state.2: The persistent phosphorescent ceramic composite material according to claim 1 , wherein the metal oxide in the first phase is selected from aluminium oxide claim 1 , zirconium oxide claim 1 , magnesium oxide claim 1 , silicon oxide claim 1 , titanium oxide claim 1 , barium oxide claim 1 , beryllium oxide claim 1 , calcium oxide and chromium oxide.3: The persistent phosphorescent ceramic composite material according to claim 1 , wherein the metal oxide in the first phase is zirconia stabilized with a dopant selected from the group consisting of Ce claim 1 , Mg and Y.4: The persistent phosphorescent ceramic composite material according to claim 1 , wherein the metal oxide in the first phase is zirconia stabilized with yttria.5: The persistent phosphorescent ceramic composite material according to claim 1 , wherein the metal oxide in the second phase is selected from Ca claim 1 , Ba claim 1 , Sr and/or Mg-aluminates claim 1 , Ca claim 1 , Ba claim 1 , Sr and/or Mg silicates claim 1 , and Ca claim 1 , and/or Sr ...

MIXED ANION CESIUM RARE EARTH SILICATES

Scintillating compounds, methods of synthesizing scintillating compounds, and applications of scintillating compounds are disclosed. The scintillating compounds can include cesium rare earth silicates. A scintillating compound can include cesium, silicon, oxygen, fluorine, and one or more of europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and scandium. The scintillating compounds can form unit cells having the general formula CsRESiOFwith RE including rare earth metals, lanthanides, and transition metals 1. A scintillating compound comprising cesium , silicon , oxygen , fluorine , and RE; wherein RE comprises europium , gadolinium , terbium , dysprosium , holmium , erbium , thulium , ytterbium , lutetium , scandium , or a combination thereof.2. The scintillating compound of claim 1 , wherein the compound has the following formula: CsRESiOF.3. The scintillating compound of claim 1 , wherein RE includes a mixture of yttrium and europium.4. The scintillating compound of claim 3 , wherein RE includes from about 90.0% to about 99.9% yttrium and from about 0.1% to about 10.0% europium.5. The scintillating compound of claim 1 , wherein RE includes a mixture of yttrium and terbium.6. The scintillating compound of claim 5 , wherein RE includes from about 90.0% to about 99.9% yttrium and from about 0.1% to about 10.0% terbium.7. The scintillating compound of claim 1 , wherein RE includes a mixture of gadolinium and europium.8. The scintillating compound of claim 7 , wherein RE includes from about 90.0% to about 99.9% gadolinium and from about 0.1% to about 10.0% europium.9. The scintillating compound of claim 1 , wherein RE includes a mixture of gadolinium and terbium.10. The scintillating compound of claim 9 , wherein RE includes from about 90.0% to about 99.9% gadolinium and from about 0.1% to about 10.0% terbium.11. The scintillating compound of claim 1 , wherein RE includes a mixture of lutetium and europium.12. The scintillating ...

LED white light device, preparation method thereof, and LED backlight module

The disclosure provides an LED white light device, including a blue light chip and phosphors. The blue light chip has a band of (455-470) nm. The phosphors include a dual-band yellow phosphor and a red phosphor having an excited light peak wavelength range of (610-660) nm. The yellow phosphor and the red phosphor are mixed according to a proportion of 1:(0.03-0.2) and cover the blue light chip, such that blue light emitted by the packaged LED white light device has a peak wavelength range of (450-465) nm. The disclosure also provides a preparation method of an LED white light device and an LED backlight module adopting the above LED white light device. The disclosure achieves the effects of blue light prevention, high color gamut and pure white simultaneously, the color uniformity and consistency are good, and a blue-green-red three-color continuous spectrum is provided, which is closer to a solar spectrum. 1. An LED white light device , comprising a blue light chip and phosphors , wherein the blue light chip has a band of (455-470) nm;the phosphors comprise a dual-band yellow phosphor and a red phosphor having an excited light peak wavelength range of (610-660) nm; andthe yellow phosphor and the red phosphor are mixed according to a proportion of 1:(0.03-0.2) and cover the blue light chip, such that blue light emitted by the packaged LED white light device has a peak wavelength range of (450-465) nm, and a ratio of energy of a spectrum of the packaged LED white light device to energy of a blue light spectrum having a wavelength range of (400-450) nm is 1:(0.05-0.2).2. The LED white light device as claimed in claim 1 , wherein white light of the LED white light device has a chromaticity coordinate range of CIE x: 0.22-0.32 and CIE y: 0.20-0.32.3. The LED white light device as claimed in claim 1 , wherein the LED white light device has an NTSC color gamut value that is greater than or equal to 70%.4. The LED white light device as claimed in claim 1 , wherein the ...

Phosphor, Method for Producing Same, Light Emitting Device, and Image Display Device

To provide a phosphor being chemically-thermally stable and having high luminous intensity if combined with LED of not exceeding 470 nm. A phosphor of the present invention includes: inorganic compound including: a crystal represented by LiBaAlSiN; a crystal represented by (Li, A)(D, E)X; and an inorganic crystal having the same crystal structure as the crystal represented by LiBaAlSiN; and a solid-solution crystal thereof, which contains Li, A, D, E, and X elements (A represents at least one selected from Mg, Ca, Sr, Ba, Sc, Y and La; D represents at least one selected from Si, Ge, Sn, Ti, Zr and Hf; E represents at least one selected from B, Al, Ga and In; and X represents at least one selected from O, N and F), wherein M element (M represents at least one selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy and Yb) is solid-solved into each. 1. A phosphor comprising: [{'sub': 1', '2', '1', '7', '12, 'a crystal represented by LiBaAlSiN,'}, {'sub': 1', '2', '1', '7', '12, 'an inorganic crystal having a same crystal structure as a crystal structure of a crystal represented by LiBaAlSiN, or'}, 'a solid solution crystal of these crystals, which comprises at least a Li element, an A element, a D element, an E element, and an X element (here, A is one or two or more kinds of elements selected from a group consisting of Mg, Ca, Sr, Ba, Sc, Y, and La; D is one or two or more kinds of elements selected from a group consisting of Si, Ge, Sn, Ti, Zr, and Hf; E is one or two or more kinds of elements selected from a group consisting of B, Al, Ga, and In; X is one or two or more kinds of elements selected from a group consisting of O, N, and F), into which an M element is solid-solved (here, M is one or two or more kinds of elements selected from a group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb)., 'an inorganic compound comprising2. The phosphor according to claim 1 , wherein the inorganic crystal having the same crystal structure as the crystal structure of the crystal ...

FLUORESCENT POWDER AND LIGHT-EMITTING DEVICE INCLUDING THE SAME

The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoKα radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2θ) from 27.3° to 28.3°, 29.7° to 30.7°, 41.9° to 42.9°, and 43.5° to 44.5°. 1. A fluorescent powder , comprising an inorganic compound , wherein the inorganic compound contains components including an element M , an element A , an element D , an element E , and an element R , wherein the element M is one or two elements selected from Eu , Ce , Mn , Tb , Dy , and Tm , the element A is one or two elements selected from Mg , Ca , Sr , and Ba , the element D is one or two elements selected from B , Al , Ga , In , La , Gd , Sc , Lu , and Y , the element E is one or two elements selected from Si , Ge , Zr , and Hf , and the element R is at least two elements selected from N , O , F , and Cl , and in a powder XRD spectrum with CoKα radiation , the inorganic compound at least has diffraction peaks within ranges of an Bragg angle 2θ from 27.3° to 28.3° , 29.7° to 30.7° , 41.9° to 42.9° , and 43.5° to 44.5° , and phases having the diffraction peaks are main generation phases of the inorganic compound.2. The fluorescent powder according to claim 1 , wherein the composition formula of the inorganic compound is MADER claim 1 , wherein the parameters a claim 1 , b claim 1 , c claim 1 , d and e satisfy the following conditions: 0.0001≦a≦0.5 claim 1 , 0 ...

Green-emitting, garnet-based phosphors in general and backlighting applications

Disclosed herein are green-emitting, garnet-based phosphors having the formula (Lu 1−a−b−c Y a Tb b A c ) 3 (Al 1−d B d ) 5 (O 1−e C e ) 12 :Ce,Eu, where A is selected from the group consisting of Mg, Sr, Ca, and Ba; B is selected from the group consisting of Ga and In; C is selected from the group consisting of F, Cl, and Br; and 0≦a≦1; 0≦b≦1; 0<c≦0.5; 0≦d≦1; and 0<e≦0.2. These phosphors are distinguished from anything in the art by nature of their inclusion of both an alkaline earth and a halogen. Their peak emission wavelength may lie between about 500 nm and 540 nm; in one embodiment, the phosphor (Lu,Y,A) 3 Al 5 (O,F,Cl) 12 :Eu 2+ has an emission at 540 nm. The FWHM of the emission peak lies between 80 nm and 150 nm. The present green garnet phosphors may be combined with a red-emitting, nitride-based phosphor such as CaAlSiN 3 to produce white light.

PHOSPHORS

Compounds containing an anionic scaffold structure, dopants and cations, in which 1. Compound containing an anionic skeleton structure , dopants and cations , where{'sub': '4', 'a. the anionic skeleton structure is characterised by coordination tetrahedra GL-, where G stands for silicon, which may be partly replaced by C, Ge, B, Al or In, and L stands for N and O, with the proviso that N makes up at least 60 atom-% of L,'}b. the cations are selected from the alkaline-earth metals, with the proviso that strontium and barium together make up less than 75 atom-% of the cations,c. the dopant present is trivalent cerium or a mixture of trivalent cerium and divalent europium,d. the charge compensation of the cerium doping takes place i) via corresponding replacement of alkaline-earth metal cations by alkali-metal cations and/or ii) via a corresponding increase in the nitrogen content and/or iii) via a corresponding reduction in the alkaline-earth metal cations.2. Compound according to claim 1 , characterised in that the alkaline-earth metal cations are strontium claim 1 , magnesium claim 1 , calcium and/or barium claim 1 , where calcium and magnesium together make up 25 atom-% or more of the alkaline-earth metal cations and in the same or a further alternative embodiment calcium and magnesium together make up from 30 atom-% to 80 atom-% of the alkaline-earth metal cations.3. Compound according to claim 1 , characterised in that G stands for more than 80 atom-% of silicon or G stands for more than 90 atom-% of silicon.4. Compound according to claim 1 , characterised in that silicon has been partly replaced by C or Ge.5. Compound according to claim 1 , characterised in that G is formed by silicon.6. Compound according to claim 1 , characterised in that it is a compound of the formula Ia claim 1 ,{'br': None, 'sub': 2-0.5y-x+1.5z', '0.5x', '0.5x', '5', '8-y+z', 'y, 'AMCeGNO\u2003\u2003(Ia)'}whereA stands for one or more elements selected from Ca, Sr, Ba, Mg,M stands for one ...

PHOSPHOR MATERIALS AND RELATED DEVICES

A phosphor material is presented that includes a blend of a first phosphor, a second phosphor and a third phosphor. The first phosphor includes a composition having a general formula of REMAScSiGeO:Ce wherein RE is selected from a lanthanide ion or Y, where M is selected from Mg, Ca, Sr or Ba, A is selected from Mg or Zn and where 0≦y≦2, 2.5≦n≦3.5, 0≦w≦1, and −1.5≦δ≦1.5. The second phosphor includes a complex fluoride doped with manganese (Mn), and the third phosphor include a phosphor composition having an emission peak in a range from about 520 nanometers to about 680 nanometers. A lighting apparatus including such a phosphor material is also presented. The light apparatus includes a light source in addition to the phosphor material. 1. A phosphor material comprising a blend of:{'sub': 2−y', '1+y', '2−y', 'y', 'n-w', 'w', '12+δ, 'sup': 3+', '3+, 'a first phosphor comprising a composition having a general formula of REMAScSiGeO:Ce, wherein RE comprises a lanthanide ion or Y, M comprises Mg, Ca, Sr or Ba, A comprises Mg or Zn; and 0≦y≦2, 2.5≦n≦3.5, 0≦w≦1, and −1.5≦δ≦1.5,'}{'sup': '4+', 'a second phosphor comprising a complex fluoride doped with manganese (Mn), and'}a third phosphor comprising a phosphor composition having an emission peak in a range from about 520 nm to about 680 nm.2. The phosphor material of claim 1 , wherein the first phosphor comprises a composition of general formula (CaCe)ScSiGeO claim 1 , where 0 Подробнее

SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT AND A PROCESS OF FORMING THE SAME

A scintillation compound can include a rare earth element that is in a divalent (RE) or a tetravalent state (RE). The scintillation compound can include another element to allow for better change balance. The other element may be a principal constituent of the scintillation compound or may be a dopant or a co-dopant. In an embodiment, a metal element in a trivalent state (M) may be replaced by RE and a metal element in a divalent state (M). In another embodiment, M may be replaced by RE and M. In a further embodiment, M may be replaced by a RE and a metal element in a monovalent state (M). The metal element used for electronic charge balance may have a single valance state, rather than a plurality of valence states, to help reduce the likelihood that the valance state would change during formation of the scintillation compound. 1. A scintillation compound comprising a cerium-doped rare-earth silicate , wherein an absorbance of the scintillation material at a wavelength of 357 nm is less than an absorbance of the scintillation material at 280 nm.2. The scintillation compound of claim 1 , wherein the scintillation compound is used within a radiation detection apparatus claim 1 , a positron emission tomography scanner claim 1 , a laser device claim 1 , or an optical storage device.3. The scintillation compound of claim 1 , wherein the scintillation compound has an afterglow of less than 200 ppm after 100 ms relative to the intensity measured during an X-ray irradiation.4. The scintillation compound of claim 3 , wherein cerium representing 0.005 mol % to 20 mol % of all the rare earths included in the scintillation compound claim 3 , any rare earth other than cerium included in the material being one or more elements chosen from the group comprising: Y claim 3 , La claim 3 , Pr claim 3 , Nd claim 3 , Sm claim 3 , Eu claim 3 , Gd claim 3 , Tb claim 3 , Dy claim 3 , Ho claim 3 , Er claim 3 , Tm claim 3 , Yb claim 3 , and Lu.5. The scintillation compound of claim 4 , ...

PHOSPHOR AND LIGHT-EMITTING DEVICE INCLUDING THE SAME

A yellow phosphor is provided. The yellow phosphor includes a crystal formed of a compound that is represented by the following formula (1): Ln(EuM)SiAlON(0.5≦x≦3, 0 Подробнее

PHOSPHORS AND PHOSPHOR-CONVERTED LEDS

The present invention relates to pyrosilicate phosphors, to a process for the preparation thereof and to the use thereof as conversion phosphors. The present invention also relates to an emission-converting material comprising the conversion phosphor according to the invention, and to the use thereof in light sources, in particular pc-LEDs (phosphor converted light emitting devices). The present invention furthermore relates to light sources, in particular pc-LEDs, and to lighting units which comprise a primary light source and the emission-converting material according to the invention. 1. Compound of formula (1) ,{'br': None, 'sub': 2-a-b-c-d', 'a', 'b', 'c', 'd', '1-e-f-g-j', 'e', 'f', 'g', 'j', '2-h-i', 'h', 'i', '7+m-k-l', 'k', 'l, '(BaMARED)(MgM′A′RE′C′)(SiB′C″)(OXN)\u2003\u2003 Formula (1)'}where the following applies to the symbols and indices used:M is selected from the group consisting of Ca, Sr, Zn or mixtures of these elements;A is selected from the group consisting of Na, K, Rb or mixtures of these elements;RE is selected from the group consisting of La, Y, Gd or mixtures of these elements;{'sup': 2+', '2+', '2+', '2+, 'D is selected from the group consisting of Eu, Mn, Yb, Sm or mixtures of these elements;'}M′ is selected from the group consisting of Zr, Hf or mixtures of these elements;A′ is selected from the group consisting of Li, Na or mixtures of these elements;RE′ is selected from the group consisting of Sc, Lu or mixtures of these elements;C′ is selected from the group consisting of B, Al, Ga, In or mixtures of these elements;B′ is selected from the group consisting of Ge, Sn or mixtures of these elements;C″ is selected from the group consisting of B, Al, Ga, In or mixtures of these elements;X is selected from the group consisting of F, Cl or mixtures of these elements;N is nitrogen;0≤a≤1.0;0≤b≤0.6;0≤c≤0.6;0≤d≤2.0;0≤e≤0.3;0≤f≤0.3;0≤g≤0.3;0≤j≤0.6;0≤h≤1.0;0≤i≤0.6;0≤k≤2.1;0≤1≤2.1; and−2.0≤m≤2.0;with the proviso that b≠0 and/or c≠0 and/or e≠0 and/or ...

Phosphor mixture, optoelectronic component comprising a phosphor mixture, and street lamp comprising a phosphor mixture

A phosphor mixture includes a first phosphor and a second phosphor, wherein an emission spectrum of the first phosphor has a relative intensity maximum in a yellow spectral range and an emission spectrum of the second phosphor has a relative intensity maximum in a red spectral range, the first phosphor corresponds to the following chemical formula: (Lu x Y 1-x ) 3 (Al 1-y Ga y ) 5 O 12 :Ce 3+ , where x is greater than or equal to 0 and less than or equal to 1 and where y is greater than or equal to 0 and less than or equal to 0.4, and the phosphor mixture is formed from a plurality of particles, which includes a plurality of particles of the first phosphor and a plurality of particles of the second phosphor.

Luminescent Glass Composition

The invention relates to faceted gemstones based on a luminescent glass composition that contains particular oxides of rare earth metals and thus enables the faceted gemstones to be identified, and to a process for identifying the gemstones. 1. A faceted gemstone of glass containing at least one dopant selected from the group of oxides of the rare earth metals scandium , lanthanum , cerium , praseodymium , samarium , europium , yttrium , terbium , dysprosium , holmium , thulium , ytterbium and lutetium , characterized in that the total amount of the oxides of rare earth metals is 2-2000 mg/kg of the glass composition.2. The faceted gemstone of glass according to claim 1 , characterized in that the total amount of the oxides of rare earth metals is 5-700 mg/kg of the glass composition.3. The faceted gemstone of glass according to claim 1 , characterized in that said glass is an inorganic glass.4. The faceted gemstone of glass according to claim 12 , characterized in that said oxidic glass is selected from silicate glasses claim 12 , borate glasses claim 12 , and phosphate glasses.5. The faceted gemstone of glass according to claim 1 , characterized in that a mixture of at least two claim 1 , oxides of the rare earth metals is employed.6. The faceted gemstone of glass according to claim 1 , characterized in that said faceted gemstone exhibits a fluorescence within a range of 300 to 3000 nm upon excitation by electromagnetic radiation.7. The faceted gemstone of glass according to claim 1 , characterized in that said glass comprises the following components:{'sub': '2', '(a) 35 to 85% by weight SiO;'}{'sub': '2', '(b) 0 to 20% by weight KO;'}{'sub': '2', '(c) 0 to 20% by weight NaO;'}{'sub': '2', '(d) 0 to 5% by weight LiO;'}(e) 0 to 13% by weight ZnO;(f) 0 to 11% by weight CaO;(g) 0 to 7% by weight MgO;(h) 0 to 10% by weight Bafl;{'sub': 2', '3, '(i) 0 to 4% by weight AlO;'}{'sub': '2', '(j) 0 to 2% by weight ZrO;'}{'sub': 2', '3, '(k) 0 to 6% by weight BO;'}(I) 0 to 3 ...

PHOSPHORS

The present invention relates to europium-doped phosphors, to a process for the preparation thereof, and to the use of these compounds as conversion phosphors. The present invention furthermore relates to light-emitting devices which comprise the phosphor according to the invention. 1. Compound of the formula (1):{'br': None, 'sub': 1-y', '4-x', 'x', '7-x', 'x, 'sup': '2+', '(EA)MSiAlNO:y Eu\u2003\u2003formula (1)'}where the following applies to the symbols and indices used:EA is selected from the group consisting of Mg, Ca, Sr, Ba or a mixture of two or more of the elements Mg, Ca, Sr and Ba; [{'br': None, '0.004≦x≦3.0;'}, {'br': None, '00.3. Compound according to claim 1 , selected from compounds of the formulae (2a) to (2n) claim 1 ,{'br': None, 'sub': a', 'b', '1-y', '4-x', 'x', '7-x', 'x, 'sup': '2+', '(MgCa)YSi(AlNO:y Eu formula (2a)'}{'br': None, 'sub': a', 'b', '1-y', '4-x', 'x', '7-x', 'x, 'sup': '2+', '(MgCa)LuSi(AlNO:y Eu formula (2b)'}{'br': None, 'sub': a', 'c', '1-y', '4-x', 'x', '7-x', 'x, 'sup': '2+', '(MgSr)YSiAlNO: y Eu formula (2c)'}{'br': None, 'sub': a', 'c', '1-y', '4-x', 'x', '7-x', 'x, 'sup': '2+', '(MgSr)LuSiAlNO:y Eu ...

ELECTROPHORETIC PARTICLE AND METHOD FOR MANUFACTURING THE SAME, ELECTROPHORETIC MICROSTRUCTURE AND ELECTROPHORETIC DISPLAY DEVICE

An electrophoretic particle, a method for manufacturing the electrophoretic particle, an electrophoretic microstructure and an electrophoretic display device are disclosed. The electrophoretic particle includes an electrophoretic particle body and a layer of photoluminescence material coated on the surface of the electrophoretic particle body. A method for manufacturing an electrophoretic particle includes: preparing a photoluminescence material; preparing an electrophoretic particle body; and forming a layer of photoluminescence material on the surface of the electrophoretic particle body. 1. An electrophoretic particle comprising an electrophoretic particle body and a layer of photoluminescence material coated on a surface of the electrophoretic particle body.2. The electrophoretic particle according to claim 1 , wherein the layer of photoluminescence material is made of a rare-earth long afterglow photoluminescence material.3. The electrophoretic particle according to claim 2 , wherein the photoluminescence material is a colored photoluminescence material.4. The electrophoretic particle according to claim 1 , wherein the electrophoretic particle is positively or negatively charged.5. An electrophoretic microstructure comprising electrophoresis liquid which comprises at least one electrophoretic particle according to .6. The electrophoretic microstructure according to claim 5 , wherein the microstructure is a microcapsule or a micro-cup.7. The electrophoretic microstructure according to claim 6 , wherein the electrophoresis comprises an electrophoretic particle positively charged and an electrophoretic particle negatively charged claim 6 , and the electrophoretic particle positively charged and the electrophoretic particle negatively charged are in different colors.8. An electrophoretic display device comprising the electrophoretic microstructure according to .9. A method for manufacturing an electrophoretic particle claim 5 , comprising:preparing a ...

PHOSPHORS, FABRICATING METHOD THEREOF, AND LIGHT EMITTING DEVICE EMPLOYING THE SAME

A phosphor material is provided which having the chemical formula is (LnCe)AlOCN, wherein Ln is one or more metals selected from Y, La, Pr, Nd, Eu, Gd, Tb, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni and Lu, and 0.01≦x≦0.3, 0≦y≦0.3, and 0.001≦z≦0.3. Before the sintering process with high temperature is performed, the different kinds of nitrogen source or the combination of nitrogen source and carbon source thereof is added into the synthesized phosphor to provide carbon atom (C) and nitrogen atom (N) that is doped into the phosphor material, in which the nitrogen source includes an organic and an inorganic nitrogen compound. The nitrogen source is added in addition to substitute oxygen atom and to perform doping process. 1. A phosphor material , characterized in that , comprising the chemical formula as (LnCe)AlOCN , wherein said Ln is one or more metals selected from Y , La , Pr , Nd , Eu , Gd , Tb , Dy , Yb , Er , Sc , Mn , Zn , Cu , Ni and Lu , and 0.01≦x≦0.3 , 0≦y≦0.3 and 0.001≦z≦0.3.2. A method for forming a phosphor material , characterized in that:{'sub': 1-x-y-z', 'x', '3', '5', '12-y-z', 'y', 'z, 'doping an organic nitrogen sources or an inorganic nitrogen source into a phosphors precursor, a synthesized phosphor or a commercially available phosphor in a reduction environment under a sintering process with a high temperature, wherein said phosphor material is formed by said phosphor precursor having a chemical formula as (LnCe)AlOCN, wherein said Ln is one or more metals selected from Y, La, Pr, Nd, Eu, Gd, Tb, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni and Lu, and 0.01≦x≦0.3, 0≦y≦0.3 and 0.001≦z≦0.3.'}3. The method according to claim 2 , wherein said organic nitrogen source is one or more combination of CHN claim 2 , CHCOONH claim 2 , (NH)CO claim 2 , HOC(CONH)(CHCONH) claim 2 , HCONH claim 2 , CHN claim 2 , CH(CN)or CHNO.4. The method according to claim 2 , wherein said inorganic nitrogen source is NHNOor at least one inorganic nitrate salt consisting of NHNO.5. The method ...

WHITE EMITTING LIGHT SOURCE AND LUMINESCENT MATERIAL

The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications. 1. A luminescent material comprising:{'sub': 2/3', '4/3', '1', '3/2', '2', '2', '3/2, 'claim-text': [{'br': None, 'i': a+d', '+d', 'b+c+x+y, 'sub': 1', '2, '0.95≦2*()/()≦1.2'}, {'br': None, 'i': a+d', '+d', '≧c+x,, 'sub': 1', '2}, {'br': None, 'i': b+y', 'c+x, '():()≧1,'}, {'br': None, 'i': b+y', 'd, 'sub': '1', '()≦1+10*,'}, {'br': None, 'i': b≧', 'y,, '5*'}, {'br': None, 'i': c≧', 'x,, '10*'}, {'br': None, 'i': d', 'd', 'd, 'sub': 1', '1', '2, '0.0001≦≦0.2 and ≧10*;'}], '(AEN)*b(MN)*c(SiN)*dCeO*dEuO*xSiO*yAlOwherein AE is an alkaline earth metal chosen from a group consisting of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen from a group consisting of Al, B, Ga, Sc or mixtures thereof, wherein'}wherein the surface roughness of at least one surface of the luminescent material, measured as the geometric mean of the difference between highest and deepest surface features is ≧0.001 μm and ≦1 μm.2. The luminescent material of wherein the luminescent material is a ceramic.3. The luminescent material of wherein the luminescent material is ≧95% (AEN)*b(MN)*c(SiN)*dCeO*dEuO*xSiO*yAlO.4. The luminescent material of further comprising at least one flux.5. The luminescent material of wherein the at least one flux comprises an alkaline material.6. The luminescent material of wherein the at least one flux comprises one of a metal oxide and a fluoride.7. The luminescent material of wherein the at least one flux ...

MULTICHROIC GLASSES

A glass having from greater than or equal to about 0.1 mol. % to less than or equal to about 20 mol. % HoO, and one or more chromophores selected from V, Cr, Mn, Fe, Co, Ni, Se, Pr, Nd, Er, Yb, and combinations thereof. The amount of HoO(mol. %) is greater than or equal to 0.7 (CeO(mol. %)+PrO(mol. %)+ErO(mol. %)). The glass can include one or more fluorescent ions selected from Cu, Sn, Ce, Eu, Tb, Tm, and combinations thereof in addition to, or in place of the chromophores. The glass can also include multiple fluorescent ions. 1. A glass comprising:{'sub': 2', '3', '2', '3, 'greater than or equal to about 0.1 mol. % to less than or equal to about 20 mol. % (HoO+NdO) and one or more fluorescent ions selected from the group consisting of oxides of Cu, Sn, Mn, Ag, Sb, Ce, Sm, Eu, Tb, Dy, Tm, and combinations thereof.'}2. The glass of claim 1 , wherein a total concentration of fluorescent ions is from greater than or equal to about 0.01 mol. % to less than or equal to about 5.0 mol. %.3. The glass of claim 1 , wherein the glass comprises CeOand the amount of CeO(mol. %) is less than an amount of other fluorescent ions present in the glass.4. The glass of claim 1 , wherein the glass has a first color when exposed to light of a first wavelength claim 1 , and a second color when exposed to light of a second wavelength.5. The glass of claim 1 , wherein the glass further comprises:{'sub': '2', 'greater than or equal to about 40 mol. % to less than or equal to about 80 mol. % SiO;'}{'sub': 2', '3, 'greater than or equal to about 5.0 mol. % to less than or equal to about 15 mol. % AlO;'}{'sub': '2', 'greater than or equal to about 10 mol. % to less than or equal to about 25 mol. % NaO;'}0 mol. % to less than or equal to about 25 mol. % MgO; and{'sub': '2', '0 mol. % to about 1.0 mol. % SnO.'}6. A glass comprising:greater than or equal to about 0.07 mol % of two or more fluorescent ions selected from the group consisting of oxides of Cu, Sn, Mn, Sb, Ag, Ce, Eu, Tb, Tm, Sm, Dy, ...

PHOSPHORS

The invention relates to compounds containing an anionic skeleton structure, dopants and cations, where

LONG-LASTING PHOSPHOR CERAMICS AND MANUFACTURING METHOD THEREOF

A method for manufacturing MAlO:Eu,RE type long-lasting phosphor ceramics that is capable of producing the ceramics at a reduced raw material cost. In addition, a sintered product of a long-lasting phosphor having no yellow body color. More specifically, the method for manufacturing MAlO:Eu,RE type long-lasting phosphor ceramics in which M is an alkaline earth element and RE is a rare earth element other than europium, involving mixing a BAM (alkaline earth aluminate) phosphor, an alkaline earth compound, an aluminum compound and a rare earth compound to form a mixture, and then firing the mixture; and a white MAlO:Eu,RE type long-lasting phosphor resulting from the method. 1. Long-lasting phosphor ceramics obtained by the method according claim 1 ,comprising the steps of:mixing an alkaline earth aluminate phosphor, an alkaline earth compound, an aluminum compound, and a rare earth compound to form a mixture; andfiring the mixture, and {'br': None, 'sub': (1-r-t)', '2', '4', 'r', 's', 't, 'MAlO:Eu,RE,Mn\u2003\u2003(1)'}, 'being represented by the compositional formula (1)wherein M is at least one element selected from the group consisting of Ba, Sr, Mg and Ca; RE is at least one rare earth element other than Eu; r is a number from 0.005 to 0.05; s is a number from 0.005 to 0.05; and t is a number from 0 to 0.08.2. The long-lasting phosphor ceramics according to claim 1 , having a whiteness of L*≧80 claim 1 , −10≦a*≦10 and −10≦b*≦10 claim 1 , as evaluated in an L*a*b* color system.3. The long-lasting phosphor ceramics according to claim 1 , being represented by the compositional formula (2):{'br': None, 'sub': (1-r-t)', '2', '4', 'r', 's', 't, 'MAlO:Eu,Dy,Mn\u2003\u2003(2)'}wherein M is at least one element selected from the group consisting of Ba, Sr, Mg, and Ca; r is a number from 0.005 to 0.05; s is a number from 0.005 to 0.05; and t is a number from 0 to 0.08; andhaving a whiteness of L*≧80, −10≦a*≦10 and −10≦b*≦10, as evaluated in an L*a*b* color system. This ...

LIGHT-EMITTING DEVICE, WAVELENGTH CONVERSION MEMBER, PHOSPHOR COMPOSITION AND PHOSPHOR MIXTURE

Provided is a light-emitting device having good binning characteristics with suppressed changes in color derived from shifts in excitation wavelength.

OXYNITRIDE FLUORESCENT MATERIAL, LIGHT EMITTING DEVICE, AND METHOD FOR PRODUCING OXYNITRIDE FLUORESCENT MATERIAL

Provided are an oxynitride fluorescent material, a light emitting device, and a method for producing an oxynitride fluorescent material. The oxynitride fluorescent material containing a composition represented by the following formula (I); (BaEu)MSiON(I), wherein in the formula (I), M represents at least one element selected from the group consisting of rare earth elements excluding Eu and Sm; and a, b, c, and d each satisfy 0 Подробнее

BLUE LIGHT-EMITTING PHOSPHOR AND LIGHT EMITTING DEVICE USING SAME

A blue light-emitting Eu-activated silicate phosphor having a constitutional formula of SrMgSiOwhich contains Eu in an amount of 0.001 to 0.2 mol per one mole of Mg and further a rare earth metal element selected from the group consisting of Sc, Y, Gd, Tb and La in an amount of 0.0001 to 0.03 mol, per one mole of Mg, gives an emission with enhanced emission strength when it is excited with a light having a wavelength in the region of 350 to 430 nm. 1. A blue light-emitting Eu-activated silicate phosphor having a constitutional formula of SrMgSiOcontaining Eu in an amount of 0.001 to 0.2 mol per one mole of Mg and a rare earth metal element selected from the group consisting of Sc, Y, Gd, Tb and La in an amount of 0.0001 to 0.03 mol, per one mole of Mg, said Eu-activated silicate phosphor emitting a blue light when it is excited with a light having a wavelength region of 350 to 430 nm. The present invention relates to a blue light-emitting silicate phosphor having a constitutional formula of SrMgSiOactivated with Eu. The invention further relates to a light-emitting device using the blue light-emitting phosphor as a blue light-emitting source.There is known a blue light-emitting silicate phosphor having formula of SrMgSiOactivated with Eu, which is named a blue light-emitting SMS phosphor.D1(JP 48-37715 B) discloses a blue light-emitting SMS phosphor having formula of 3(Sr.Eu) O.MgO.2SiO. D1 describes that the SMS phosphor emits blue light when it is excited with a light source having a wavelength of 253.7 nm.D2(JP 2006-312654 A) discloses a phosphor having the following formula:3(MEu)O.MO.MOwherein Mis at least one element selected from the group consisting of Ca, Sr and Ba, Mis Mg and/or Zn, Mis Si and/or Ge, m is a value satisfying the condition of 0.9≦m≦1.1, n is a value satisfying the condition of 1.8≦n≦2.2, and x is a value satisfying the condition of 0.00016≦x<0.003.The above-mentioned formula may embrace the blue light-emitting SMS phosphor. However, D2 ...

WAVELENGTH-SHIFT COMPOSITE LIGHT-STORING POWDER AND METHOD OF MANUFACTURING AND APPLYING THE SAME

A wavelength-shift composite light-storing powder and method of manufacturing and applying the same. Wherein, inorganic metal oxide and light-storing material containing rare earth elements are made to collide at high speed in an environment of extremely low temperature. The collision process makes said inorganic metal oxide to produce fusion reaction on surface of said light-storing material, that causes changes of lattice structure, to generate photon shift phenomenon and produce said wavelength-shift composite light-storing powder. Said composite light-storing powder is apt to engage cross-linked structure of thermoplastic polymer in a high temperature blending process, to achieve even distribution. Finally, through a filament process to produce successfully light-storing fibers capable of emitting lights of various wavelengths, to raise its heat resistance and wash durability. 1. A wavelength-shift composite light-storing powder , comprising:a light-storing material containing rare earth elements; andan inorganic metal oxide forming and fusing on a surface of said light-storing material containing rare earth elements under a high speed gas flow and an environment with extremely low temperature −100 to −196° C.2. The wavelength-shift composite light-storing powder of claim 1 ,wherein said inorganic metal oxide is present in an amount by weight of 0.3 to 0.8%.3. The wavelength-shift composite light-storing powder of claim 1 ,wherein said light-storing material containing rare earth elements is present in an amount by weight of 0.1 to 5%.4. The wavelength-shift composite light-storing powder of claim 1 ,{'sub': 2', '4, 'wherein said light-storing material containing rare earth elements is SrAlO:Eu,Td.'}5. The wavelength-shift composite light-storing powder of claim 1 ,wherein said inorganic metal oxide is selected from a group consisting of zinc oxide, aluminum oxide, calcium oxide, magnesium oxide, zirconium oxide, and strontium oxide.6. The wavelength-shift ...

Mechanoluminescence paint sensor for stress and crack visualizations

A method of using a paint sensor to observe stress distributions of a stressed substrate includes the steps of applying a composition including a paintable medium and a mechanoluminescence material to a substrate, allowing the composition to form a solid film on the substrate, allowing the substrate to be stressed following the formation of the solid film, and measuring the stress the substrate has undergone by determining the mechanoluminescence of the solid film. A composition for visualizing stress or crack distributions includes a paintable medium and a mechanoluminescence material dispersed therein.

NEAR-INFRARED MECHANOLUMINESCENT MATERIAL, NEAR-INFRARED MECHANOLUMINESCENT BODY, AND METHOD FOR MANUFACTURING NEAR-INFRARED MECHANOLUMINESCENT MATERIAL

Provided is a mechanoluminescent material which can radiate near-infrared light. The mechanoluminescent material includes an aluminate co-doped with Eu, Cr, and an ion or ion cluster of at least any one rare earth metal element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu. In addition, in the mechanoluminescent material, the aluminate is an aluminate represented by Formula MAlO(provided that, M is any of Mg, Ca, Sr, or Ba) and Eu, Cr, and the ion or ion cluster of a rare earth metal element are co-doped at a concentration at which M in the aluminate is substituted by from 0.25 to 10%. 1. A near-infrared mechanoluminescent material comprising an aluminate co-doped with Eu , Cr , and an ion or ion cluster of at least any one rare earth metal element selected from Sc , Y , La , Ce , Pr , Nd , Pm , Sm , Eu , Gd , Tb , Dy , Ho , Er , Tm , Yb , or Lu.2. The near-infrared mechanoluminescent material according to claim 1 , wherein the aluminate is an aluminate represented by Formula MAlO(provided that claim 1 , M is any of Mg claim 1 , Ca claim 1 , Sr claim 1 , or Ba).3. The near-infrared mechanoluminescent material according to claim 2 , wherein Euis co-doped at a concentration at which M in the aluminate represented by Formula MAlOis substituted by from 0.25 to 10%.4. The near-infrared mechanoluminescent material according to claim 2 , wherein Cr is co-doped at a concentration at which M in the aluminate represented by Formula MAlOis substituted by from 0.25 to 10%.5. The near-infrared mechanoluninescent material according to claim 2 , wherein the ion or ion cluster of a rare earth metal element is co-doped at a concentration at which M in the aluminate represented by Formula MAlOis substituted by from 0.25 to 10%.6. The near-infrared mechanoluminescent material according to claim 1 , wherein the ion of a rare earth metal element is Nd.7. The near-infrared mechanolumninescent material according to claim 6 , wherein Ndis co-doped at a ...

GARNET-TYPE FLUORESCENT POWDER, PREPARATION METHOD AND DEVICES COMPRISING THE FLUORESCENT POWDER

The application relates to fluorescent powder which has a garnet structure and can be effectively excited by ultraviolet light or blue light, a method for preparing the fluorescent powder, and a light emitting device, an image display device and an illumination device comprising the fluorescent powder. A chemical formula of the fluorescent powder is expressed as: (Ma-xMx)ZrbMcOd, where Mis one or two elements selected from Sr, Ca, La, Y, Lu and Gd, Ca or Sr being necessary; Mis one or two elements selected from Ce, Pr, Sm, Eu, Tb and Dy, Ce being necessary; Mis at least one element selected from Ga, Si, and Ge, Ga being necessary; and 2.8≦a≦3.2, 1.9≦b≦2.1, 2.8≦c≦3.2, 11.8≦d≦12.2, and 0.002≦x≦0.6. 114-. (canceled)15. A fluorescent powder , wherein the fluorescent powder has a garnet crystal structure , and a chemical formula of the fluorescent powder is expressed as: (MM)ZrMO , wherein Mis one or two elements selected from Sr , Ca , La , Y , Lu and Gd , Ca or Sr being necessary; Mis one or two elements selected from Ce , Pr , Sm , Eu , Tb and Dy , Ce being necessary; Mis at least one element selected from Ga , Si , and Ge , Ga being necessary; and 2.8≦a≦3.2 , 1.9≦b≦2.1 , 2.8≦c≦3.2 , 11.8≦d≦12.2 , and 0.002≦x≦0.6.16. The fluorescent powder according to claim 15 , wherein an atom number ratio m of (Ca+Sr) to Mis: 2/3≦m≦1.17. The fluorescent powder according to claim 15 , wherein an atom number ratio n of Ce to Mis: 0.8≦n≦1.18. The fluorescent powder according to claim 17 , wherein an atom number ratio k of Ga to Mis: 2/3≦k≦1.19. The fluorescent powder according to claim 15 , wherein Min the fluorescent powder comprises Ca.20. The fluorescent powder according to claim 15 , wherein a:b:c:d is 3:2:3:12.21. The fluorescent powder according to claim 15 , wherein{'sup': 1', '1, 'when Mcomprises Ca, an atom number ratio m of Ca to Mis: 2/3≦m≦1; and'}{'sup': 1', '1, 'when Mcomprises Sr and does not comprise Ca, an atom number ratio m of Sr to Mis: 2/3≦m≦1.'}22. A method for ...

LIGHT-EMITTING DEVICE

A light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength. 1. A light-emitting device comprising at least a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor , whereinthe fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source and emits light having a peak wavelength in the range exceeding 700 nm and having an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.2. The light-emitting device according to claim 1 , having a continuous emission spectrum at least in the range of 400 nm or more to 1 claim 1 ,000 nm or less.3. The light-emitting device according to claim 1 , wherein the fluorescent film further includes at least one kind of visible phosphor that is excited by light from the solid-state light source and emits light having a peak wavelength in the range of 350 nm or more to 700 nm or less.4. The light-emitting device according to claim 3 , wherein the fluorescent film includes claim 3 , as the visible phosphor claim 3 , one or more kinds of each of: a visible phosphor A that is excited by light from the solid-state light source and emits light having a peak wavelength in the range of 350 nm or more to less than 430 nm; a visible phosphor B that is excited by light from the solid-state ...

Index matched composite materials and light sources incorporating the same

Disclosed are composites that include a matrix and at least one filler. The matrix may be a core-shell particle assembly that includes an inorganic core and a polymeric shell. The refractive index of the core may be adjusted by adjusting the volume fraction of the core, such that the refractive index of the core-shell particle assembly matches or substantially matches the refractive index of the filler. Optically transparent composites that exhibit properties of the filler may therefore be achieved. Methods of making such composites and light sources including such composites are also disclosed.

WAVELENGTH-SHIFT COMPOSITE LIGHT-STORING POWDER AND METHOD OF MANUFACTURING AND APPLYING THE SAME

A wavelength-shift composite light-storing powder and method of manufacturing and applying the same. Wherein, inorganic metal oxide and light-storing material containing rare earth elements are made to collide at high speed in an environment of extremely low temperature. The collision process makes said inorganic metal oxide to produce fusion reaction on surface of said light-storing material, that causes changes of lattice structure, to generate photon shift phenomenon and produce said wavelength-shift composite light-storing powder. Said composite light-storing powder is apt to engage cross-linked structure of thermoplastic polymer in a high temperature blending process, to achieve even distribution. Finally, through a filament process to produce successfully light-storing fibers capable of emitting lights of various wavelengths, to raise its heat resistance and wash durability. 1. A wavelength-shift composite light-storing powder , comprising:a light-storing material containing rare earth elements; andan inorganic metal oxide, to form and fuse on a surface of said light-storing material containing rare earth elements, in a high speed gas flow, and in an environment of extremely low temperature −100 to −196° C.2. The wavelength-shift composite light-storing powder as claimed in claim 1 , wherein said inorganic metal oxide is present in an amount by weight of 0.3 to 0.8%.3. The wavelength-shift composite light-storing powder as claimed in claim 1 , wherein said light-storing material containing rare earth elements is present in an amount by weight of 0.1 to 5%.4. The wavelength-shift composite light-storing powder as claimed in claim 1 , wherein said light-storing material containing rare earth elements is SrAlO:Eu claim 1 ,Td.5. The wavelength-shift composite light-storing powder as claimed in claim 1 , wherein said inorganic metal oxide is selected from one of a group consisting of:zinc oxide, aluminum oxide, calcium oxide, magnesium oxide, zirconium oxide, and ...

WAVELENGTH CONVERTING MATERIAL FOR A LIGHT EMITTING DEVICE

Embodiments of the invention include a wavelength-converting material defined by AERE[SiAl(NC)(NO)]:Eu,Ce, where AE=Ca, Sr, Ba; RE=Y, Lu, La, Sc; 0≤x1≤0.18; 0≤x2≤0.2; x1+x2>0; 0≤y≤1; 0≤z≤3; 0≤w≤3. 1. A device comprising: a cubic crystal structure;', {'sup': '2+', 'an Eu dopant;'}, {'sup': 2+', '[2], 'cubic coordination of at least one Eu dopant site by X(X=N, O) atoms;'}, {'sub': 4', '4, 'star-shaped Y(SiX)(Y=C, N) host lattice building blocks;'}, 'AE, where AE=Ca, Sr, Ba; and', 'RE, where RE=Y, Lu, La, Sc., 'a wavelength converting material comprising2. The device of wherein an average effective ionic radii for AE+RE is no more than 120 pm.3. The device of wherein the wavelength converting material comprises AERE[SiAl(NC)(NO)]:Eu claim 1 ,Ce claim 1 , where AE=Ca claim 1 , Sr claim 1 , Ba; RE=Y claim 1 , Lu claim 1 , La claim 1 , Sc; 0≤x1≤0.18; 0≤x2≤0.2; x1+x2>0; 0≤y≤1; 0≤z≤3; 0≤w≤3.4. The device of further comprising a light emitting diode that emits blue light claim 1 , wherein the wavelength converting material is disposed in a path of light emitted by the light emitting diode.5. The device of wherein the wavelength converting material is a first wavelength converting material that emits light having a peak wavelength that is red claim 1 , the device further comprising a second wavelength converting material that emits light having a peak wavelength that is yellow or green.6. The device of wherein the wavelength converting material is formed into a ceramic.7. The device of claim 6 , wherein the wavelength converting material has a density of at least 90% of a density of a single crystal of the wavelength converting material.8. The device of wherein the wavelength converting material is selected from the group consisting of CaLaYSiNC:Eu claim 1 , CaYSiAlON:Eu claim 1 , CaYSiN:Eu claim 1 , CaLaSiNC:Eu claim 1 , SrYSiNC:Eu claim 1 , SrScSiN: Eu claim 1 , SrLuSiN: Eu claim 1 , and CaSiON: Eu.9. The device of wherein the wavelength converting material is CaRESiNCN: ...

LUTECIUM OXIDE LUMINESCENT MATERIAL AND PREPARATION METHOD THEREOF

The present invention relates to a lutecium oxide luminescent material, having the general molarcular formula of LuO:Ln@SiO@M, wherein Ln is selected from one of the elements Eu, Tb, Dy, Sm, Er, Ho and Tm; M is selected from at least one of Ag, Au, Pt, Pd and Cu metallic nanoparticles; 0 Подробнее

PROCESSING APPARATUS

A processing apparatus includes a chuck table having a holding surface for holding a workpiece; a horizontal moving mechanism that moves the chuck table in a horizontal direction and is supplied with a first oil; and a vertical moving mechanism that moves a processing unit in a vertical direction and is supplied with a second oil. Before mounting the workpiece on the holding surface, the holding surface is imaged by a camera while being irradiated with light, and it is examined whether or not the picked-up image is emitting light. If there is a light-emitting part in the picked-up image, it is determined that oil is adhered to the light-emitting part. 1. A processing apparatus comprising:a chuck table having a holding surface for holding a workpiece;a processing unit that processes the workpiece held on the holding surface;a horizontal moving mechanism that moves the chuck table in a horizontal direction relative to the processing unit and is supplied with a first oil containing first photoluminescence particles;a vertical moving mechanism that moves the processing unit in a vertical direction relative to the chuck table and is supplied with a second oil containing second photoluminescence particles;a camera that images the holding surface of the chuck table; anda light source that casts light to an imaging area of the camera inclusive of the holding surface,wherein presence or absence of adhesion of the first oil and/or the second oil to the holding surface can be detected based on an image of the holding surface picked up by the camera.2. The processing apparatus according to claim 1 ,wherein the first photoluminescence particles emit light in a first color when irradiated with light of the light source,the second photoluminescence particles emit light in a second color different from the first color when irradiated with light of the light source, anda source of the scattered oil adhered to the holding surface is identified by observing the image picked up by the ...

PHOSPHORESCENT MASTERBATCH AND FIBER

A phosphorescent masterbatch includes 1 to 50 parts by weight of a phosphorescent material, 43 to 98.8 parts by weight of a thermoplastic polymer, 0.1 to 5 parts by weight of a dispersing agent, and 0.1 to 2 parts by weight of a nucleating agent, which increases crystallization rate and thermal crystallization temperature of the thermoplastic polymer. 1. A phosphorescent masterbatch , comprising:a phosphorescent material in a range from 1 to 50 parts by weight;a thermoplastic polymer in a range from 43 to 98.8 parts by weight;a dispersing agent in a range from 0.1 to 5 parts by weight; anda nucleating agent in a range from 0.1 to 2 parts by weight, and the nucleating agent increasing crystallization rate and crystallization temperature of the thermoplastic polymer.2. The phosphorescent masterbatch of claim 1 , wherein a size of the phosphorescent material is in a range from 3 to 100 μm.3. The phosphorescent masterbatch of claim 1 , wherein the phosphorescent masterbatch is an aluminate or a silicate.4. The phosphorescent masterbatch of claim 3 , wherein the aluminate has a formula of (M1AlO:Eu claim 3 , M2) claim 3 , where M1 is Mg claim 3 , Ca claim 3 , Sr or Ba claim 3 , and M2 is Y claim 3 , La claim 3 , Ce claim 3 , Pr claim 3 , Nd claim 3 , Sm claim 3 , Gd claim 3 , Tb claim 3 , Dy claim 3 , Ho claim 3 , Er claim 3 , Tm claim 3 , Yb or Lu.5. The phosphorescent masterbatch of claim 3 , wherein the silicate has a formula of (M3SiO:Eu claim 3 , M4) claim 3 , where M3 is Mg claim 3 , Ca claim 3 , Sr or Ba claim 3 , and M4 is Y claim 3 , La claim 3 , Ce claim 3 , Pr claim 3 , Nd claim 3 , Sm claim 3 , Gd claim 3 , Tb claim 3 , Dy claim 3 , Ho claim 3 , Er claim 3 , Tm claim 3 , Yb or Lu.6. The phosphorescent masterbatch of claim 1 , wherein the thermoplastic polymer comprises ethylene vinyl acetate(EVA) claim 1 , polyethylene(PE) claim 1 , polypropylene(PP) claim 1 , polyethylene terephthalate (PET) claim 1 , polybutylene terephthalate (PBT) claim 1 , thermoplastic ...

APPARATUS AND METHOD INCORPORATING GLOW-IN-THE-DARK MATERIAL TO PRESERVE POWER USAGE WHEN CREATING LIGHT FOR DARK ENVIRONMENTS

A lighting device, comprising a glow material; a light source, positioned to illuminate the glow material when the light source is activated; and a light source controller, for sequencing sufficient on and off activation of the light source to maintain activate the glow material over a period of time. 1. A lighting device , comprising:a) a glow material;b) a light source, positioned to illuminate the glow material when the light source is activated; andc) a mechanical power source for activation of the light source during operation of the mechanical power source and non-activation the light source during non-operation of the mechanical power source to maintain activation of the glow material over a period of time.2. The lighting device of claim 1 , wherein the glow material includes phosphor crystals.3. The lighting device of claim 2 , wherein the phosphor crystals include a compound of the formula of MAl2O4:X claim 2 , Y claim 2 , where M is one or more elements selected from the group consisting of calcium claim 2 , strontium and barium claim 2 , and X and Y are each a co-activator selected from the group consisting of europium claim 2 , dysprosium and neodymium as a host crystal claim 2 , and a long-after glow phosphor comprising a compound of the general formula Y2O2S:Z claim 2 , where Z is an activator made of one or more elements selected from the group consisting of europium claim 2 , magnesium and titanium as a host crystal.4. The lighting device of claim 1 , further comprising circuitry claim 1 , coupled to the mechanical power source that activates the light source during operation of the mechanical power source.5. A lighting device claim 1 , comprising:a) a glow material;b) a light source, positioned to illuminate the glow material when the light source is activated; andc) a mechanical power source for activation of the light source during operation of the mechanical power source and non-activation the light source during non-operation of the mechanical ...

LUMINOUS BODY AND METHOD FOR PRODUCING SAME

The present invention provides a luminous body having an improved chemical resistance, and to a method for producing the same. The luminous body of the present invention contains a strontium-containing fluorescent particle in which a specified condensed phosphate is deposited in an amount of 0.2 to 15.0 wt %, and amorphous silica with which the surface of the fluorescent particle is coated. The luminous body of the present invention can be suitably produced by obtaining a condensed phosphate-coated fluorescent particle in which a specified condensed phosphate is deposited on the surface of the strontium-containing fluorescent particle in an amount of 0.2 to 15.0 wt %, washing the resulting solid with water until the electrical conductivity conductivity comes to be 450 μS or less, and adding sodium silicate and an acid to a slurry in which the particle is dispersed in water to deposit amorphous silica. 1. A method for producing a luminous body , comprising the steps of:{'b': '1', '(a-1) dispersing a fluorescent particle that is a strontium-containing phosphorescent pigment in water to obtain a slurry (S);'}{'b': '1', '(a-2) adding sodium tripolyphosphate or sodium tetrapolyphosphate as well as a salt of a metal which is selected from calcium, strontium, barium, aluminum, zinc, and cerium to the slurry (S) to obtain a condensed phosphate-coated fluorescent particle in which a condensed phosphate is deposited on the surface of the fluorescent particle in an amount of 0.2 to 15.0 wt % with respect to the weight of the fluorescent particle;'}(a-3) washing the resulting solid with water until the electrical conductivity conductivity comes to be 450 μS or less;{'b': '2', '(b-1) dispersing the condensed phosphate-coated fluorescent particle in water to obtain a slurry (S); and'}{'b': '2', '(b-2) adding sodium silicate and an acid to the slurry (S) to deposit amorphous silica on the surface of the condensed phosphate-coated fluorescent particle.'}2. The method for producing ...

Watch Components

Watch component made of a persistent phosphorescent ceramic composite material which is a sintered dense body comprising two or more phases, a first phase consisting of at least one metal oxide and a second phase consisting of a metal oxide containing at least one activating element in a reduced oxidation state, the watch component having a surface which comprises an area which shows phosphorescent emission and an area which does not show phosphorescent emission or which shows phosphorescent emission with an intensity which is lower than that of the emission of the other area. 113-. (canceled)15. The watch component according to claim 14 , wherein the metal oxide in the first phase of the persistent phosphorescent ceramic composite material is selected from the group consisting of aluminum oxide claim 14 , zirconium oxide claim 14 , magnesium oxide claim 14 , silicon oxide claim 14 , titanium oxide claim 14 , barium oxide claim 14 , beryllium oxide claim 14 , calcium oxide and chromium oxide.16. The watch component according to claim 14 , wherein the metal oxide in the first phase of the persistent phosphorescent ceramic composite material is zirconia stabilized with a dopant selected from the group consisting of Ce claim 14 , Mg and Y.17. The watch component according to claim 14 , wherein the metal oxide in the first phase of the persistent phosphorescent ceramic composite material is zirconia stabilized with yttria.18. The watch component according to claim 14 , wherein the metal oxide in the second phase of the persistent phosphorescent ceramic composite material is selected from Ca claim 14 , Ba claim 14 , Sr and/or Mg-aluminates claim 14 , Ca claim 14 , Ba claim 14 , Sr and/or Mg silicates claim 14 , and Ca claim 14 , and/or Sr aluminosilicates.19. The watch component according to claim 15 , wherein the metal oxide in the second phase of the persistent phosphorescent ceramic composite material is selected from Ca claim 15 , Ba claim 15 , Sr and/or Mg- ...

MULTICHROIC GLASSES

A glass having from greater than or equal to about 0.1 mol. % to less than or equal to about 20 mol. % HoO, and one or more chromophores selected from V, Cr, Mn, Fe, Co, Ni, Se, Pr, Nd, Er, Yb, and combinations thereof. The amount of HoO(mol. %) is greater than or equal to 0.7 (CeO(mol. %)+PrO(mol. %)+ErO(mol. %)). The glass can include one or more fluorescent ions selected from Cu, Sn, Ce, Eu, Tb, Tm, and combinations thereof in addition to, or in place of the chromophores. The glass can also include multiple fluorescent ions. 1. A glass comprising:{'sub': 2', '3', '2', '3, 'greater than or equal to about 0.1 mol. (HoO+NdO); and'}{'sub': 2', '3', '2', '2', '3', '2', '3, 'one or more chromophores selected from the group consisting of ions of V, Cr, Mn, Fe, Co, Ni, Cu, Se, Bi, Ce, Pr, Nd, Er, Yb, and combinations thereof, wherein the amount of HoO(mol. %) is greater than or equal to 0.7 (CeO(mol. %)+PrO(mol. %)+ErO(mol. %)).'}2. The glass of claim 1 , wherein the glass comprises NdOin an amount such that NdO(mol. %) is greater than or equal to (CeO(mol. %)+PrO(mol. %)+ErO(mol. %)).3. The glass of any of claim 1 , wherein the glass further comprises:{'sub': '2', 'greater than or equal to about 40 mol. % to less than or equal to about 80 mol. % SiO;'}{'sub': 2', '3, 'greater than or equal to about 5.0 mol. % to less than or equal to about 15 mol. % AlO;'}{'sub': '2', 'greater than or equal to about 10 mol. % to less than or equal to about 25 mol. % NaO;'}0 mol. % to less than or equal to about 25 mol. % MgO; and{'sub': '2', '0 mol. % to about 1.0 mol. % SnO.'}4. The glass of claim 1 , wherein the one or more chromophores are present in an amount from greater than about 0.001 mol. % to less than or equal to about 1.5 mol. %.5. The glass of claim 1 , wherein the glass appears to have a first color when exposed to natural light and a second color when exposed to fluorescent light.6. A glass comprising:{'sub': 2', '3', '2', '3, 'greater than or equal to about 0.1 mol. % to ...

PHOSPHOR AND LIGHT-EMITTING DEVICE INCLUDING SAME

Provided is a phosphor including: a host material expressed by a general formula (Ca1-xMex)a(Ce1-y-zLayPrz)bSicXd (0.5≦b/a≦7, 1.5≦c/(a+b)≦3.5, 4≦d/(a+b≦6, 0≦x≦0.5, 0≦y<1, 0≦z≦0.5, and 0≦y+z<1, where X is at least one element selected from N, O, F, and Cl); and at least one activator that is selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm, and is solid-solutioned in the host material, wherein Me is at least one element selected from Ba, Mg, Sr, Mn, and Zn, and the host material includes, as a main phase, a phase that exhibits a diffraction peak having a relative intensity of 5% or more in ranges of Bragg's angles (2θ) of 10.68-11.41°, 18.52-19.46°, 31.21-31.58°, 31.61-32.20°, and 36.81-37.49° of an X-ray diffraction pattern when a relative intensity of a diffraction peak having the strongest intensity is set to 100% in the X-ray powder diffraction pattern. 1. A phosphor comprising:a host material expressed by a general formula (Ca1-xMex)a(Ce1-y-zLayPrz)bSicXd (0.5≦b/a≦7, 1.5≦c/(a+b)≦3.5, 4≦d/(a+b)≦6, 0≦x≦0.5, 0≦y<1, 0≦z≦0.5, and 0≦y+z<1, where X is at least one element selected from N, O, F, and Cl); and at least one activator that is selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm, and is solid-solutioned in the host material,wherein Me is at least one element selected from Ba, Mg, Sr, Mn, and Zn, andthe host material comprises, as a main phase, a phase that exhibits a diffraction peak having a relative intensity of 5% or more in ranges of Bragg's angles (2θ) of 10.68-11.41°, 18.52-19.46°, 31.21-31.58°, 31.61-32.20°, and 36.81-37.49° of a powder X-ray diffraction pattern when a relative intensity of a diffraction peak having the strongest intensity is set to 100% in the powder X-ray diffraction pattern.2. The phosphor of claim 1 , wherein the main phase has a crystal structure of a monoclinic system.31082424. The phosphor of claim 1 , wherein the host material has a crystal lattice that has reference values of a=18.4882 Å claim 1 , b=4. ...