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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 22712. Отображено 100.

26-01-2012 дата публикации

Phosphor member, method of manufacturing phosphor member, and illuminating device

Номер: US20120018761A1

Автор: Mika Honda

Принадлежит: Konica Minolta Opto Inc

In the present invention, provided is a phosphor member capable of improving a yield and an extraction rate, in addition to high environmental tolerance, high heat resistance, high durability and a high color rendering property, by which variations of color and an amount of light are reduced, and also provided are a method of manufacturing the phosphor member and an illuminating device. Disclosed is a phosphor member prepared separately from an LED light source constituting a white illuminating device, wherein the phosphor member possesses phosphor particles and an inorganic layer having been subjected to coating and a heat treatment.

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Номер записи: 1

02-02-2012 дата публикации

Method for recovery of rare earths from fluorescent lamps

Номер: US20120027651A1

Автор: Agnieszka Wojtalewicz-Kasprzak, Robert Otto

Принадлежит: OSRAM GMBH

Method of recovery of rare earths from fluorescent lamps. The method comprises six steps. The individual process steps are: Mechanical separation of coarse components. Separation of the halophosphate. Extraction in acids of easily soluble rare-earth fluorescent substances (mainly Y, Eu-oxide) Extraction in acids of rare earth fluorescent substances which dissolve with difficulty (for example rare-earth phosphates) Breakdown of the remaining components which contain rare earths (for example rare-earth-aluminates) Final treatment.

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Номер записи: 2

09-02-2012 дата публикации

Light emitting apparatus and method for manufacturing thereof

Номер: US20120032578A1

Автор: Hiroshi Fukunaga, Kazunori Annen, Kenichi Yoshimura, Kimiko Mieda, Makoto Izumi

Принадлежит: Sharp Corp

A light emitting apparatus includes a light emitting device emitting primary light and a wavelength conversion unit absorbing a part of the primary light to emit secondary light. The wavelength conversion unit includes a first wavelength conversion unit containing at least a nanocrystalline phosphor and a second wavelength conversion unit containing a rare-earth-activated phosphor or a transition-metal-element-activated phosphor. In the light emitting device, the first wavelength conversion unit and the second wavelength conversion unit are closely stacked in order.

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Номер записи: 3

09-02-2012 дата публикации

Phosphor, production method thereof and light emitting instrument

Номер: US20120032579A1

Автор: Naoto Hirosaki

Принадлежит: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

A light emitting element includes a light-emitting source for emitting light at a wavelength of 330 to 500 nm and a constituent phosphor. The constituent phosphor includes a compound including M, A, Al, O, and N, where M is at least one kind of element selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb, and A is at least one kind of element selected from C, Si, Ge, Sn, B, Ga, In, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, Lu, Ti, Zr, Hf, Ta, and W.

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Номер записи: 4

16-02-2012 дата публикации

Process for producing fluorescent substance and fluorescent substance produced thereby

Номер: US20120037849A1

Автор: Naotoshi Matsuda, Ryosuke Hiramatsu, Yumi Fukuda

Принадлежит: Toshiba Corp

The present invention provides a fluorescent substance excellent both in quantum efficiency and in temperature characteristics, and also provides a process for producing the fluorescent substance. This fluorescent substance is an oxynitride phosphor having a low paramagnetic defect density and comprising aluminum, silicon, either or both of oxygen and nitrogen, and a metal element M, provided that the metal element M is partly replaced with an emission center element R. That phosphor can be produced by the steps of: subjecting a mixture of starting materials to heat treatment under a nitrogen atmosphere so as to obtain an intermediate fired product, and then further subjecting the intermediate fired product to heat treatment under an atmosphere of nitrogen-hydrogen mixed gas.

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Номер записи: 5

16-02-2012 дата публикации

Surface-modified silicate luminophores

Номер: US20120037850A1

Автор: Chung Hoon Lee, Detlef Starick, Gundula Roth, Walter Tews

Принадлежит: Litec LLL GmbH, Seoul Semiconductor Co Ltd

A surface-modified silicate luminophore includes a silicate luminophore and a coating includes at least one of (a) a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and (b) a combination of the fluorinated coating and at least one moisture barrier layer. The moisture barrier layer includes MgO, Al 2 O 3 , Y 2 O 3 , La 2 O 3 , Gd 2 O 3 , Lu 2 O 3 , and SiO 2 or the corresponding precursors, and the coating is disposed on the surface of the silicate luminophore.

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Номер записи: 6

23-02-2012 дата публикации

Light emitting device and manufacturing method thereof

Номер: US20120043573A1

Автор: Aoi Okada, Iwao Mitsuishi, Keiko Albessard, Masahiro Kato, Naotoshi Matsuda, Shinya Nunoue, Yumi Fukuda

Принадлежит: Toshiba Corp

A light emitting device according to one embodiment includes a light emitting element that emits light having a wavelength of 250 nm to 500 nm and a fluorescent layer that is disposed on the light emitting element. The fluorescent layer includes a phosphor having a composition expressed by the following equation (1) and an average particle diameter of 12 μm or more. (M 1−x1 Eu x1 ) 3−y Si 13−z Al 3+z O 2+u N 21−w (1) (In the equation ( 1 ), M is an element that is selected from IA group elements, IIA group elements, IIIA group elements, IIIB group elements except Al, rare-earth elements, and IVB group elements. x1, y, z, u, and w satisfy the following relationship. 0<x1<1, −0.1<y<0.3, −3<z≦1, −3<u−w≦1.5)

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Номер записи: 7

08-03-2012 дата публикации

Full-color light-emitting material and preparation method thereof

Номер: US20120056130A1

Автор: Mingjie Zhou, Wenbo Ma, Zhaopu Shi

Принадлежит: Oceans King Lighting Science and Technology Co Ltd

A full-color light-emitting material and preparation method thereof are provided. A light-emitting material is following general formula compound (Y 1-x-y-z A x B y C z ) 2 GeO 5 , wherein 0<x≦0.05, 0<y≦0.15, 0<z≦0.15, x:y:z=1:1˜10:1˜10, A is one of Tm and Ce, B is one of Tb, Ho, Er and Dy, C is one of Eu, Pr and Sm. Preparation method is: grinding the raw material uniformly, then sintering the material at 1300˜1500 ° C. for 6˜24 h, cooling down the material to room temperature then getting the product. A full-color light-emitting material which can emit red-green-blue full-color light directly and be adapted for light-emitting device excited in ultraviolet zone without other doped material is provided. And a preparation method having simple process, stable product quality for full-color light-emitting materials is provided.

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Номер записи: 8

08-03-2012 дата публикации

Light emitting device

Номер: US20120057339A1

Автор: Aoi Okada, Iwao Mitsuishi, Naotoshi Matsuda, Shinya Nunoue, Yumi Fukuda

Принадлежит: Toshiba Corp

A light emitting device according to one embodiment includes: a board; plural first light emitting units each including a first light emitting element and a first fluorescent layer formed on the first light emitting element having a green phosphor; plural second light emitting units each including a second light emitting element and a second fluorescent layer formed on the second light emitting element having a red phosphor; the second fluorescent layers and the first fluorescent layers being separated in a non-contact manner with gas interposed there between; and plural third light emitting units each including a third light emitting element and a resin layer formed on the third light emitting element having neither a green phosphor nor the red phosphor, the third light emitting units being disposed between the first light emitting units and the second light emitting units.

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Номер записи: 9

15-03-2012 дата публикации

Red light-emitting flourescent substance and light-emitting device employing the same

Номер: US20120062106A1

Автор: Aoi Okada, Iwao Mitsuishi, Keiko Albessard, Masahiro Kato, Naotoshi Matsuda, Shinya Nunoue, Yumi Fukuda

Принадлежит: Toshiba Corp

The embodiment provides a red light-emitting fluorescent substance represented by the following formula (1): (M 1-x EC x ) a M 1 b AlO c N d (1). In the formula (1), M is an element selected from the group consisting of IA group elements, IIA group elements, IIIA group elements, IIIB group elements, rare earth elements and IVA group elements; EC is an element selected from the group consisting of Eu, Ce, Mn, Tb, Yb, Dy, Sm, Tm, Pr, Nd, Pm, Ho, Er, Cr, Sn, Cu, Zn, As, Ag, Cd, Sb, Au, Hg, Tl, Pb, Bi and Fe; M 1 is different from M and is selected from the group consisting of tetravalent elements; and x, a, b, c and d are numbers satisfying the conditions of 0<x<0.2, 0.55<a<0.80, 2.10<b<3.90, 0<c≦0.25 and 4<d<5, respectively. This substance emits luminescence having a peak in the wavelength range of 620 to 670 nm when excited by light of 250 to 500 nm.

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Номер записи: 10

22-03-2012 дата публикации

Phosphor particle group and light emitting apparatus using the same

Номер: US20120068595A1

Автор: Kenji Terashima, Masatsugu Masuda, Tetsuya Hanamoto

Принадлежит: Sharp Corp

Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a β-type SiAlON substantially represented by a general formula: EuaSibAlcOdNe, where 0.005≦a≦0.4, b+c=12, d+e=16, wherein 60% or more of the phosphor particle group is composed of the phosphor particles in which a value obtained by dividing a longer particle diameter by a shorter particle diameter is greater than 1.0 and not greater than 3.0. A high-efficiency and stable light emitting apparatus using a β-type SiAlON, which includes a light converter using the phosphor particle group, and a phosphor particle group therefor are also provided.

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Номер записи: 11

22-03-2012 дата публикации

Dc-driven electroluminescence device and light emission method

Номер: US20120068620A1

Автор: Takuyoshi Ishimura

Принадлежит: Kobundo Printing Co Ltd

An inorganic electroluminescence device has a structure including a phosphor layer sandwiched between a first electrode and a second electrode; and a semiconductor structure in which N-type semiconductors and a P-type semiconductor, made of inorganic semiconductor materials, are joined to form an NPN type structure. The phosphor is made of an inorganic substance. The first electrode is to be a cathode and is formed on an insulating glass substrate. The second electrode is to be an anode and is disposed opposite the first electrode. The semiconductor structure is disposed between the cathode that is the first electrode and the phosphor layer.

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Номер записи: 12

22-03-2012 дата публикации

Light-emitting device with a luminescent medium, corresponding lighting system comprising the light-emitting device and corresponding luminescent medium

Номер: US20120069544A1

Автор: Cornelis Reinder Ronda, Joachim Opitz, Thomas Juestel, Ulrich Weichmann

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

The invention relates to a light emitting device ( 1 ) with high colour rendering comprising a wavelength converting member ( 2 ) with a luminescent medium for wavelength conversion of blue light and/or ultraviolet light ( 10 ) into red light and/or yellow and/or green light and a light source ( 3 ) emitting blue light ( 10 ) and/or ultraviolet light arranged to pump the luminescent medium, said luminescent medium essentially having a main phase of a solid state host material which is doped with Ce 3+ -ions. According to the invention the host material comprises ions of a further rare-earth material Ln, wherein the host material is selected such that the emission energy of the 5d-4f emission on Ce 3+ -ions is energetically higher than the absorption energy into an upper 4f n state of the further rare-earth material Ln, and wherein the light emission of wavelength converted light is caused by an intra-atomic 4f n -4f n transition within the ions of the further rare-earth material. The invention further relates to a corresponding lighting system comprising the light-emitting device and a corresponding luminescent medium.

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Номер записи: 13

05-04-2012 дата публикации

Photovoltaic devices

Номер: US20120080067A1

Автор: Alok Mani Srivastava, Bastiaan Arie Korevaar, Loucas Tsakalakos, Omar Ivan Stern Gonzalez, Yangang Andrew Xi

Принадлежит: General Electric Co

A photovoltaic device including a composite down-converting layer disposed on the device, is presented. The composite down-converting layer includes down-converting material particles dispersed in a matrix. The size of the down-converting material particles is a function of a difference in respective refractive indices (Δn) of the down-converting material and the matrix such that: (i) for Δn less than about 0.05, the size of down-converting material particles is in a range from about 0.5 micron to about 10 microns, and (ii) for Δn at least about 0.05, the size of down-converting material particles is in a range from about 1 nanometer to about 500. A photovoltaic module having a plurality of such photovoltaic devices is also presented.

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Номер записи: 14

26-04-2012 дата публикации

Efficient led-based illumination modules with high color rendering index

Номер: US20120099290A1

Автор: Gerard Harbers, Raghuram L.V. Petluri

Принадлежит: Xicato Inc

An illumination module includes a light mixing cavity with an interior surface area and window that are physically separated from an LED. A portion of the window is coated with a first wavelength converting material and a portion of the interior surface area is coated with a second wavelength converting material. The window may be coated with LuAG:Ce. The window may also be coated with a third wavelength converting material with a peak emission wavelength between 615-655 nm where the spectral response of light emitted from the window is within 20% of a blackbody radiator at the same CCT. The LED may emit a light that is converted by the light mixing cavity with a color conversion efficiency ratio greater than 130 lm/W where the light mixing cavity includes two photo-luminescent materials with a peak emission wavelengths between 508-528 nm and 615-655 nm.

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Номер записи: 15

03-05-2012 дата публикации

Modification of layered silicates for luminescence activation

Номер: US20120107624A1

Автор: Jürgen BÜDDEFELD, Manfred Rietz, Marina Lezhnina, Peter Klauth, Ulrich Kynast

Принадлежит: Individual

The invention relates to a method for producing a luminescent layered silicate composite. The method according to the invention is characterized in that at least one luminescent dye, in particular fluorescent dye, on the basis of at least one complex, essentially a chelate complex, of at least one element of the rare earth elements (“rare earth complex”) is introduced between and/or stored in at least two layers of at least one layered silicate (“layered silicate layers”) respectively or that at least one luminescent dye, in particular fluorescent dye, on the basis of at least one complex, essentially a chelate complex, of at least one element of the rare earth elements (“rare earth complex”) is combined with a layered silicate to form a composite. The luminescent layered silicate composite according to the invention can be used for marking objects, for example plastic-based objects, or in the field of bioanalysis.

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Номер записи: 16

10-05-2012 дата публикации

Green emitting material

Номер: US20120112129A1

Автор: Andreas Tuecks, Baby-Seriyati Schreinemacher, Peter J. Schmidt

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

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.

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Номер записи: 17

24-05-2012 дата публикации

Crystal Growth Atmosphere For Oxyorthosilicate Materials Production

Номер: US20120126171A1

Автор: A. Andrew Carey, Mark S. Andreaco, Piotr Szupryczynski

Принадлежит: Siemens Medical Solutions USA Inc

A method of growing a rare-earth oxyorthosilicate crystal, and crystals grown using the method are disclosed. The method includes preparing a melt by melting a first substance including at least one first rare-earth element and providing an atmosphere that includes an inert gas and a gas including oxygen.

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Номер записи: 18

24-05-2012 дата публикации

Lamp for incandescent-like color quality

Номер: US20120126685A1

Автор: Istváná Károly Deme, Katalin Toth

Принадлежит: General Electric Co

A low pressure discharge lamp comprises a phosphor composition configured to provide a total light emission having characteristics within specified parameters, including color point above or substantially on the Planckian locus in the CIE standard chromaticity diagram; CCT of from about 2500 kelvin to about 3600 kelvin; general color rendering index Ra(8) of at least about 80; and special color rendering index R′a(14) of from about 72 to about 87. These novel lamps result in incandescent-like color quality while also having favorable efficacy. Also disclosed are phosphor blends which enable the achievement of such lamps.

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Номер записи: 19

31-05-2012 дата публикации

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

Номер: US20120132857A1

Автор: Ronan P. Le Toquin

Принадлежит: Individual

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.

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Номер записи: 20

28-06-2012 дата публикации

Liquid crystal display

Номер: US20120162573A1

Автор: Kenji Terashima, Kohsei Takahashi, Masanori Watanabe, Masatsugu Masuda, Tetsuya Hanamoto

Принадлежит: Individual

A liquid crystal display including a backlight and a filter, the backlight including a light-emitting device having a light-emitting element emitting blue light, and a green phosphor and a red phosphor absorbing a part of primary light emitted from the light-emitting element and emitting first secondary light and second secondary light, respectively, the green phosphor being a β-type SiAlON phosphor containing Eu and Al dissolved in a crystal of a nitride or an oxynitride having a β-type Si 3 N 4 crystal structure, and the filter including filters for colors of red (R), green (G), blue (B) and yellow (Y), respectively, arranged in a plane for subpixels provided in each pixel of the liquid crystal display, which attains excellent color reproducibility (NTSC ratio) and high luminance, can be provided.

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Номер записи: 21

05-07-2012 дата публикации

Phosphor for Scintillator

Номер: US20120168678A1

Автор: Hiromu Watanabe, Motoyuki Tanaka, Shunichi Hatamoto, Tsukasa Takahashi

Принадлежит: Mitsui Mining and Smelting Co Ltd

Provided is a phosphor for scintillator that can absorb radiation and convert it into visible light, and which has a short fluorescence decay time. The phosphor contains a lutetium sulfide-containing host material and an activator agent ion, for example, a phosphor comprising a composition represented by the general formula (Lu 1-x Pr x ) 2 S 3 , or (Lu 1-x Ce x ) 2 S 3 .

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Номер записи: 22

12-07-2012 дата публикации

(oxy) nitride phosphor, white light-emitting device including the (oxy) nitride phosphor, method of preparing phosphor, and nitride phosphor prepared by the method

Номер: US20120176026A1

Автор: Seoung-jae Im, Shunichi Kubota, Tae-Gon Kim, Young-Sic Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

Provided is an (oxy)nitride phosphor, which is a compound represented by Formula 1 below: {M( 1-x) Eu x } a Si b O c N d <Formula 1> wherein, M is an alkaline earth metal; and 0<x<1, 1.8<a<2.2, 4.5<b<5.5, 0≦c<8, 0<d≦8, and 0<c+d≦8. The (oxy)nitride phosphor produces red light suitable for use in UV-LED and blue-LED type white light-emitting devices and achieves good efficiency.

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Номер записи: 23

19-07-2012 дата публикации

Luminescent Ceramic Composite Converter and Method of Making the Same

Номер: US20120181919A1

Автор: George C. Wei

Принадлежит: Osram Sylvania Inc

A luminescent converter for a light emitting element (e.g., LED) includes a transparent, sol-gel-derived ceramic matrix having particles of at least one type of phosphor embedded therein that change a wavelength of the input light to light that has a different wavelength. The ceramic matrix is 20-80% porous with a majority of the pores having a diameter in a range of 2-20 nm. A method of making this converter includes preparing a sol-gel ceramic matrix embedded with the particles of phosphor in the matrix, and drying the matrix at no more than 600° C. to form the converter.

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Номер записи: 24

26-07-2012 дата публикации

Scintillator Crystal Materials, Scintillators And Radiation Detectors

Номер: US20120186061A1

Автор: Albert Hort, Christian Stoller, Donna Simonetti, John J. Simonetti

Принадлежит: Schlumberger Technology Corp

The present disclosure describes a scintillation crystal having the general formula RE(1−y)M y F 3X A 3(1−x) , wherein RE is selected from the group consisting of La, Gd, Y, Lu, or mixtures thereof; A is selected from Cl, Br or I, and M is an activator ion selected from the group consisting of Ce 3+ , Pr 3+ or Eu 3+ and combinations thereof containing two or all three activator ions and further optionally comprising Ho, Er, Tm, or Yb also in the 3+ oxidation state. We also disclose a scintillation detector including a scintillation crystal, and downhole tools and methods of oil exploration utilizing such scintillation crystals.

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Номер записи: 25

26-07-2012 дата публикации

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

Номер: US20120187338A1

Автор: Chang Hae Kim, Hwa Sung You, Kang Sik Choi

Принадлежит: Korea Research Institute of Chemical Technology KRICT

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.

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Номер записи: 26

23-08-2012 дата публикации

Light emitting device

Номер: US20120211781A1

Автор: Hyuck Jung Choi, Mi-Hae Kim, Sang Min Lee

Принадлежит: Seoul Semiconductor Co Ltd

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.

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Номер записи: 27

30-08-2012 дата публикации

Luminophore composition for low pressure discharge lamps

Номер: US20120217866A1

Автор: Armin Konrad, Claudia Held, Nina Goebel

Принадлежит: OSRAM GMBH

In various embodiments, a luminophore composition for low pressure discharge lamps for generating radiation with a color temperature of greater than 4800 K having a very good general color rendering index of greater than 90, the luminophore composition including at least one halophosphate luminophore, a luminophore emitting in the red wavelength region, a luminophore emitting in the blue-green wavelength region, a europium-doped luminophore emitting in the blue wavelength region and a Tb-doped luminophore emitting in the green wavelength region, wherein the luminophore composition includes a luminophore emitting in an emission range in the visible region with wavelengths of greater than 380 nm and at least one emission band in the near ultraviolet and that the emitted intensity of the luminophore is smaller in the visible region than in the near ultraviolet region.

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Номер записи: 28

06-09-2012 дата публикации

Phosphor and led light emitting device using the same

Номер: US20120223352A1

Автор: Hajime Takeuchi, Katsutoshi Nakagawa, Ryo Sakai, Tsutomu Ishii, Yasuhiro Shirakawa, Yasumasa Ooya, Yoshitaka Funayama, Yumi Ito

Принадлежит: Toshiba Corp, Toshiba Materials Co Ltd

An LED light emitting device is provided that has high color rendering properties and is excellent color uniformity and, at the same time, can realize even luminescence unattainable by conventional techniques. A phosphor having a composition represented by formula: (Sr 2-X-Y-Z-ω Ba X Mg Y Mn Z Eu ω )SiO 4 wherein x, y, z, and u are respectively coefficients satisfying 0.1<x<1, 0<y<0.5, 0<z<0.1, y>z, and 0.01<ω<0.2. is provided. The phosphor is used in combination with ultraviolet and blue light emitting diodes having a luminescence peak wavelength of 360 to 470 nm to form an LED light emitting device.

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Номер записи: 29

06-09-2012 дата публикации

Silicate phosphor, method of manufacturing silicate phosphor, and light-generating device having silicate phosphor

Номер: US20120223636A1

Автор: Byung-Choon Yang, Ji-Su Yu, Jong-Su Kim, Kwang-Won Park, Myeong-Ju Shin, Seok-Hyun Nam, Seung-Hwan Baek, Yeong-Bae Lee, Young-Sic Kim, Yun-Hyoung Park

Принадлежит: PU-KYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY FOUNDATION, Samsung Display Co Ltd

A silicate phosphor composition is provided having a γ-phase of an orthorhombic crystal structure whose space group is Pbnm 62, and whose composition is represented by the following chemical formula: Ca 2-x-y-z M x SiO 4 :y Ce 3+ ,z N(0≦ x <0.5,0< y ≦0.1,0≦ z <0.15) In the formula, M represents at least one member selected from the group consisting of Mg, Sr, Ba, Zn, Na, Al, Ga, Ge, P, As and Fe, and N represents at least one member selected from the group consisting of Eu 2+ , Mn 2+ , Tb 3+ , Yb 2+ and Tm 3+ . The silicate phosphor has a maximum absorbance for a wavelength of about 450 nm to about 475 nm corresponding to a main part of a blue excitation light, and has a great stability at a high temperature. As such the silicate phosphor may be used in combination with a blue light source to produce a white light.

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Номер записи: 30

25-10-2012 дата публикации

Light-emitting device, white light-emitting device, illuminator, and image display

Номер: US20120267997A1

Автор: Hideaki Kaneda, Kimiya Takeshita, Naoto Kijima, Yasuo Shimomura

Принадлежит: Mitsubishi Chemical Corp

To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x 1 (17.5) and the color coordinate y 1 (17.5) of the light emitted at a driving current density of 17.5 A/cm 2 and the color coordinate x 1 (70) and the color coordinate y 1 (70) of the light emitted at a driving current density of 70 A/cm 2 satisfy the following Expressions (D) and (E): −0.006≦ x 1 (17.5)− x 1 (70)≦0.006 (D), −0.006≦ y 1 (17.5)− y 1 (70)≦0.006 (E).

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Номер записи: 31

01-11-2012 дата публикации

Chloride, bromide and iodide scintillators with europium doping

Номер: US20120273726A1

Автор: Kan Yang, Mariya Zhuravleva

Принадлежит: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION

A halide scintillator material is disclosed where the halide may comprise chloride, bromide or iodide. The material is single-crystalline and has a composition of the general formula ABX 3 where A is an alkali, B is an alkali earth and X is a halide which general composition was investigated. In particular, crystals of the formula ACa 1-y Eu y I 3 where A=K, Rb and Cs were formed as well as crystals of the formula CsA 1-y Eu y X 3 (where A=Ca, Sr, Ba, or a combination thereof and X═Cl, Br or I or a combination thereof) with divalent Europium doping where 0≦y≦1, and more particularly Eu doping has been studied at one to ten mol %. The disclosed scintillator materials are suitable for making scintillation detectors used in applications such as medical imaging and homeland security.

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Номер записи: 32

15-11-2012 дата публикации

Luminescent material

Номер: US20120286207A1

Автор: Chung-Hoon Lee, Gundula Roth, Walter Tews

Принадлежит: Seoul Semiconductor Co Ltd

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.

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Номер записи: 33

22-11-2012 дата публикации

Scintillator crystal body, method for manufacturing the same, and radiation detector

Номер: US20120292516A1

Автор: Nobuhiro Yasui, Ryoko Horie, Toru Den, Yoshihiro Ohashi

Принадлежит: Canon Inc

In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other.

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Номер записи: 34

06-12-2012 дата публикации

Scintillation crystal including a rare earth halide, and a radiation detection system including the scintillation crystal

Номер: US20120305778A1

Автор: Peter R. Menge, Vladimir Ouspenski

Принадлежит: Saint Gobain Ceramics and Plastics Inc

A scintillation crystal can include Ln (1-y )RE y X 3 , wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications.

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Номер записи: 35

06-12-2012 дата публикации

Luminescent Particles, Methods and Light Emitting Devices Including the Same

Номер: US20120305955A1

Автор: Brian Thomas Collins, Christopher P. Hussell

Принадлежит: Individual

A luminescent particle includes a luminescent compound that is configured to perform a photon down conversion on a portion of received light. The luminescent compound includes a host compound material and an activator material that is combined with the host compound material. The activator material is provided in a quantity that limits a conversion efficiency of the luminescent compound to limit a decrease in the decrease in luminous intensity of light emitted from the luminescent compound and thus provide a given color shift of the a combined emission wavelength from a non-excited state to a steady-state excited condition.

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Номер записи: 36

06-12-2012 дата публикации

Red nitride phosphors

Номер: US20120305958A1

Автор: Brian Thomas Collins, David Todd Emerson, II Harry A. Seibel

Принадлежит: Individual

Provided according to embodiments of the invention are phosphor compositions that include Ca 1-x-y Sr x Eu y AlSiN 3 , wherein x is in a range of 0.50 to 0.99 and y is less than 0.013. Also provided according to embodiments of the invention are phosphor compositions that include Ca 1-x-y Sr x Eu y AlSiN 3 , wherein x is in a range of 0.70 to 0.99 and y is in a range of 0.001 and 0.025. Also provided are methods of making phosphors and light emitting devices that include a phosphor composition according to an embodiment of the invention.

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Номер записи: 37

06-12-2012 дата публикации

Luminescent glass, producing method thereof and luminescent device

Номер: US20120308760A1

Автор: Guitang Chen, Mingjie Zhou, Wenbo Ma

Принадлежит: Oceans King Lighting Science and Technology Co Ltd

A luminescent glass comprises glass matrix. Said glass matrix comprises a glass part and a complex part of glass and fluorescent powder, which is embedded in said glass part. Said complex part of glass and fluorescent powder comprises glass material and fluorescent powder dispersed in said glass material. Said fluorescent powder is of cerium-doped yttrium aluminum garnet series. A method for producing the luminescent glass and a luminescent device comprising the luminescent glass are also provided. The luminescent glass and the luminescent device have good luminescence reliability, high luminescence stability and long service life. The method can be carried out at a relatively low temperature.

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Номер записи: 38

20-12-2012 дата публикации

Light-emitting device

Номер: US20120319155A1

Автор: Hiroshi Fukunaga, Kenichi Yoshimura, Kohsei Takahashi, Naoto Hirosaki

Принадлежит: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Sharp Corp

Disclosed is a light-emitting device that exhibits good color rendering and highly efficiently emits white light in an incandescent bulb color range. The semiconductor light-emitting device ( 1 ) of the present invention includes: a semiconductor light-emitting element ( 2 ) that emits blue light; a green phosphor ( 14 ) that absorbs the blue light and emits green light; and an orange phosphor ( 13 ) that absorbs the blue light and emits orange light. The orange phosphor ( 13 ) produces an emission spectrum having a peak at a wavelength of equal to or greater than 590 nm but equal to or less than 630 nm and having a full width at half maximum of 130 nm or greater at the peak, the full width at half maximum of the emission spectrum of the orange phosphor ( 13 ) being broader than a full width at half maximum of an emission spectrum of the green phosphor ( 14 ). The orange phosphor ( 13 ) exhibits an absorptance having a peak wavelength of 420 nm or greater. ABS(530) and ABS(MAX) satisfy a relation, ABS(530)/ABS(MAX)<0.60, where ABS(MAX) is an absorptance of the orange phosphor ( 13 ) at the peak wavelength thereof, and ABS(530) is an absorptance of the orange phosphor ( 13 ) at a wavelength of 530 nm.

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Номер записи: 39

03-01-2013 дата публикации

White light luminescent device based on purple light leds

Номер: US20130001444A1

Автор: Mingjie Zhou, Qingtao Li, Wenbo Ma, Yanbo Qiao, Zhaopu Shi

Принадлежит: Oceans King Lighting Science and Technology Co Ltd

The present invention relates to a white light luminescent device based on purple light LED. The white light luminescent device includes a housing, a support plate, at least one purple light LED semiconductor light source, and a piece of high silica luminescent glass. The support plate is received in the housing. The at least one purple light LED semiconductor light source is positioned on the support plate. The piece of high silica luminescent glass doped with Eu ions is opposite to the purple light LED semiconductor light source. One surface of the high silica luminescent glass away from the purple light LED semiconductor light source is coated with a phosphor layer formed with a selection from a mixture of yellow phosphor and red phosphor, a mixture of green phosphor and red phosphor, and yellow phosphor.

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Номер записи: 40

03-01-2013 дата публикации

Luminescent particles, methods and light emitting devices including the same

Номер: US20130001470A1

Автор: Brian Thomas Collins, Florin A. TUDORICA, Jesse Colin Reiherzer

Принадлежит: Cree Inc

A luminescent particle includes an interior portion of the luminescent particle comprising a luminescent compound that reacts with atmospherically present components and a passivating layer on an outer surface of the luminescent particle that is operable to inhibit the reaction between the luminescent compound and the atmospherically present components.

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Номер записи: 41

03-01-2013 дата публикации

White light emitting lamp and white led lighting apparatus including the same

Номер: US20130001628A1

Автор: Daichi Usui, Masahiko Yamakawa, Yasuhiro Shirakawa

Принадлежит: Toshiba Materials Co Ltd

An object is to provide a white light emitting lamp 1 comprising: a semiconductor light emitting element 2 which is placed on a board 3 and emits ultraviolet light or blue light; and a light emitting portion that is formed so as to cover a light emitting surface of the semiconductor light emitting element 2 , the light emitting portion containing a blue phosphor B, a green phosphor G, a red phosphor R and a deep red phosphor DR that are excited by the light emitted from the semiconductor light emitting element 2 to respectively emit blue light, green light, red light and a deep red light, the white light emitting lamp 1 emitting white light by mixing light emission colors from the blue phosphor B, the green phosphor G, the red phosphor R and a deep red phosphor DR with one another, wherein the deep red phosphor DR has a main emission peak in a longer wavelength region than a main emission peak of the red phosphor, the red phosphor R comprises at least one component selected from: a europium-activated SiAlON phosphor and a europium-activated CASN phosphor each having a predetermined composition, while the deep red phosphor DR comprises a manganese-activated magnesium florogermanate phosphor having a predetermined composition. According to the above white light emitting lamp, when the BGR phosphor is used in combination with the semiconductor element such as an LED or the like, and a deep red phosphor DR having a predetermined composition is further added in addition to the red phosphor R, so that luminance characteristics can be improved, whereby there can be provided a white light emitting lamp excellent in both high luminance and high color rendering properties.

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Номер записи: 42

03-01-2013 дата публикации

Light emitting device and method for producing the same

Номер: US20130002124A1

Автор: Kazunori Annen, Makoto Izumi

Принадлежит: Sharp Corp

A light emitting device includes a light emitting element that emits primary light and a wavelength conversion unit that absorbs part of the primary light and emits secondary light. In the light emitting device, the wavelength conversion unit includes a plurality of types of phosphors that emit secondary light having wavelengths different from each other, and at least one of the phosphors is a covered phosphor covered with a surface film that reflects secondary light emitted from a phosphor other than the covered phosphor.

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Номер записи: 43

03-01-2013 дата публикации

Phosphor and leds containing same

Номер: US20130002129A1

Автор: Nathan Zink, Victor Perez, Yi Zheng

Принадлежит: Osram Sylvania Inc

There is herein described a phosphor for use in white pc-LED applications. The phosphor has a composition represented by (Y 1-x-y Gd x Ce y ) 3 (Al 1-z Sc z ) 5 O 12 wherein 0<x≦0.3, 0<y≦0.04 and 0<z≦0.3. White pc-LEDs containing the phosphor exhibit less sensitivity to variations in the blue emission of LED dies than pc-LEDs containing conventional YAG:Ce and YGdAG:Ce phosphors. The phosphor may used in multiple pc-LED configurations including as a sintered ceramic converter or applied as a powder dispersed in a silicone encapsulant.

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Номер записи: 44

24-01-2013 дата публикации

Light emitting device

Номер: US20130020601A1

Автор: Hisayoshi Daicho, Ken Kato, Kiminori Enomoto, Tatsuya Matsuura

Принадлежит: Koito Manufacturing Co Ltd

A light emitting device is configured to achieve a white color by mixing light from respective phosphors. The light emitting device includes: a light emitting element for emitting ultraviolet or short-wavelength visible light having a peak wavelength in a wavelength range of 380 to 420 nm; a first phosphor excited by the ultraviolet or short-wavelength visible light to emit visible light having a peak wavelength in a wavelength range of 560 nm to 600 nm; a second phosphor excited by the ultraviolet or short-wavelength visible light to emit visible light having a complementary relationship with visible light emitted by the first phosphor; and a light transmitting member which is a light transmitting layer for covering the light emitting element, and has the first phosphor and the second phosphor dispersed therein.

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Номер записи: 45

31-01-2013 дата публикации

Lighting devices with prescribed colour emission

Номер: US20130026506A1

Автор: Hagai Arbell

Принадлежит: Yissum Research Development Co of Hebrew University of Jerusalem

Optical conversion layers based on semiconductor nanoparticles for use in lighting devices, and lighting devices including same. In various embodiments, spherical core/shell seeded nanoparticles (SNPs) or nanorod seeded nanoparticles (RSNPs) are used to form conversion layers with superior combinations of high optical density (OD), low re-absorbance and small FRET. In some embodiments, the SNPs or RSNPs form conversion layers without a host matrix. In some embodiments, the SNPs or RSNPs are embedded in a host matrix such as polymers or silicone. The conversion layers can be made extremely thin, while exhibiting the superior combinations of optical properties. Lighting devices including SNP or RSNP-based conversion layers exhibit energetically efficient superior prescribed colour emission

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Номер записи: 46

28-02-2013 дата публикации

Phosphor composite member, led device and method for manufacturing phosphor composite member

Номер: US20130049575A1

Автор: Ryota Suzuki, Shunsuke Fujita, Tadahito Furuyama

Принадлежит: Nippon Electric Glass Co Ltd

Provided is a phosphor composite member having excellent thermal resistance, high color rendition, controllability of various chromaticities from a daylight color to a light bulb color, and high luminescence intensity. A phosphor composite member in which a sintered inorganic powder body layer containing a SnO—P 2 O 5 -based glass and an inorganic phosphor powder is formed on a surface of a ceramic base material, wherein upon irradiation with an excitation light, the ceramic base material and the sintered inorganic powder body layer emit different fluorescences having different wavelengths.

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Номер записи: 47

14-03-2013 дата публикации

ALUMINATE-BASED FLUORESCENT POWDER COATED BY METAL NANOPARTICLE AND PRODUCTION METHOD THEREOF

Номер: US20130062562A1

Автор: Liu Jun, Ma Wenbo, Zhou Mingjie

Принадлежит:

An aluminate-based fluorescent powder coated by metal nanoparticles. The formula thereof is (YTb)(AlGa)O@zM, in which 0 Подробнее

Номер записи: 48

21-03-2013 дата публикации

TRANSPARENT GLASS CERAMIC EMITTING WHITE LIGHT AND PREPARATION METHOD THEREOF

Номер: US20130069005A1

Автор: Ma Wenbo, Weng Fangyi, Zhou Mingjie

Принадлежит:

A transparent glass ceramic emitting white light and preparation method thereof are provided. The chemical formula of the transparent glass ceramic is aSiO.bAlO.cNa.dCeF.xDyF, wherein a, b, c, d, and x are mole fractions, a is 35˜50, b is 15˜30, c is 5˜20, d is 5˜20, x is 0.01˜1, and a+b+c+d=100. The transparent glass ceramic can be substituted for the combination of epoxy resin or silica gel and fluorescent powder to seal LED. The transparent glass ceramic has strong excitation spectrum with broadband at ultraviolet area, and can emit strong white light under the excitation of ultraviolet light. 1. A transparent glass ceramic emitting white light , wherein said transparent glass ceramic emitting white light has the chemical formula of aSiO.bAlO.cNaF.dCeF.xDyF , wherein a , b , c , d , and x are mole fractions , a+b+c+d=100 , a is in the range of 35 to 50 , b is in the range of 15 to 30 , c is in the range of 5 to 20 , d is in the range of 5 to 20 , x is in the range of 0.01 to 1.2. A transparent glass ceramic emitting white light as in claim 1 , wherein a is in the range of 40 to 50 claim 1 , b is in the range of 20 to 30 claim 1 , c is in the range of 10 to 20 claim 1 , d is in the range of 10 to 20 claim 1 , x is in the range of 0.1 to 1.3. A preparation method of transparent glass ceramic emitting white light claim 1 , comprising:{'sub': 2', '2', '3', '3', '3, 'step 1: providing silica, alumina, sodium fluoride, cerium fluoride and dysprosium fluoride according to the stoichiometric ratio, said stoichiometric ratio is mole ratio of corresponding elements in the chemical formula of aSiO.bAlO.cNaF.dCeF.xDyF, wherein a is in the range of 35 to 50, b is in the range of 15 to 30, c is in the range of 5 to 20, d is in the range of 5 to 20, x is in the range of 0.01 to 1;'}step 2: mixing and grinding the compounds of step 1 uniformly, heating at high temperature, keeping the temperature constant to form mixed melt;step 3: pouring the mixed melt obtained in step 2 into ...

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Номер записи: 49

21-03-2013 дата публикации

OXYHALIDE LUMINESCENT MATERIAL DOPED WITH RARE EARTH CONTAINING METAL PARTICLE AND PRODUCTION METHOD THEREOF

Номер: US20130069006A1

Автор: Liu Jun, Ma Wenbo, Zhou Mingjie

Принадлежит:

An oxyhalide luminescent material doped with rare earth containing metal particles is provided. The formula thereof is Re′Re″OX: yM, in which Re′ is the first rare earth element, Re″ is the second rare earth element, X is F, Cl or Br, M is metal nanoparticles, x is 0.001-0.15, and y is 5×10-2×10. A method for producing the luminescent material is also provided. By virtue of metal particles introduced into the oxyhalide luminescent material doped with rare earth and the surface plasma resonance effect of the metal surface, the luminescence intensity of the oxyhalide luminescent material is improved. The good stability, uniform appearance and excellent luminescence intensity of the luminescent material ensure its application in field emission devices. The production method has advantages of simplicity in operating, pollution-free, easy control, less demanding for equipment and suitability for industrialized production. 1. An oxyhalide luminescent material doped with rare earth containing metal particles , wherein said oxyhalide luminescent material doped with rare earth containing metal particles has chemical formula of Re′Re″OX: yM , wherein Re′ is the first rare earth element , Re″ is the second rare earth element; X is F , Cl or Br , M is metal nanoparticles , x is in the range of 0.001 to 0.15 , and y is in the range of 5×10-2×10.2. Oxyhalide luminescent material doped with rare earth containing metal particles as in claim 1 , wherein said first rare earth element Re′ is Y claim 1 , La or Sc claim 1 , said second rare earth element Re″ is Tm claim 1 , Tb claim 1 , Eu claim 1 , Sm claim 1 , Gd claim 1 , Dy or Ce.3. Oxyhalide luminescent material doped with rare earth containing metal particles as in claim 1 , wherein said metal nanoparticles M is Ag claim 1 , Au claim 1 , Pt or Pd metal nanoparticles.4. A production method of oxyhalide luminescent material doped with rare earth containing metal particles claim 1 , including the following steps:step 1: producing ...

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Номер записи: 50

28-03-2013 дата публикации

OXIDE STANNATE LUMINESCENT MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20130075656A1

Автор: Liang Xiaofang, Ma Wenbo, Zhou Mingjie

Принадлежит:

A luminescent material and a preparation method thereof are provided. The said luminescent material is represented by the following chemical formula: LnEuSnO, wherein Ln is selected from one of Gd, Y and La, 0.1≦x≦1.5. The said luminescent material has good electrical performance, anti-electron bombardment and stable luminescent property. It is appropriate to be used in field emission light-emitting devices. The said preparation method has simple technique, no pollution, manageable process conditions, low preparation temperature and low equipment requirement, and is beneficial to industry production. 1. An oxide stannate luminescent material , which is represented by the following chemical formula: LnEuSnO , wherein Ln is a metal selected from the group consisting of Gd , Y and La , and the scope of x is:2. A preparation method of an oxide stannate luminescent material , comprising the steps of:{'sub': 2−x', 'x', '2', '7, 'S1, providing raw materials of Ln compound, Eu compound and Sn compound according to the mole ratio of each element of the chemical formula LnEuSnO, grinding and uniform mixing to form a mixture; wherein Ln is a metal selected from the group consisting of Gd, Y and La, and the scope of x isS2, pre-roasting the mixture for 3 to 5 hours under temperature of 300° C. to 500° C., cooling to room-temperature, then grinding into mixing powder;{'b': 1200', '1400, 'S3, roasting the mixing powder for 1 to 24 hours under temperature of ° C. to ° C., cooling to room-temperature, grinding, and obtaining the oxide stannate luminescent material.'}3. The method according to claim 2 , the Ln compound is Ln-oxide or Ln-nitrate.4. The method according to claim 2 , the Eu compound is EuOor Eu(NO).5. The method according to claim 2 , the Sn compound is SnOor Sn(OH).6. The method according to claim 2 , wherein the step S1 further including the step of doping fluxing agent into the raw materials claim 2 , the amount of the fluxing agent is 1% to 5% of the total mole ...

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Номер записи: 51

28-03-2013 дата публикации

HALOGEN SILICATE LUMINESCENT MATERIAL AND THE PREPARATION METHOD AND APPLICATION THEREOF

Номер: US20130075657A1

Автор: Liu Jun, Ma Wenbo, Zhou Mingjie

Принадлежит: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LTD.

Disclosed is a halogen silicate luminescent material having a chemical structural formula of (NEuMn)SiOCl:xM, and the preparation method thereof, where M is at least one of Ag, Au, Pt and Pd, N is an alkaline earth metal and specifically at least one of Mg, Ca, Sr and Ba, 0 Подробнее

Номер записи: 52

28-03-2013 дата публикации

FLUORESCENT POWDER OF HALOGEN SILICATE CONTAINING NANO-METAL PARTICLES AND PREPARATION METHOD THEREOF

Номер: US20130075658A1

Автор: Liu Jun, Ma Wenbo, Zhou Mingjie

Принадлежит:

Provided is a fluorescent powder of halogen-silicate containing nano-metal particles with the formula of CaX.y(CaEuMnO).SiO:zM, wherein X is fluorin or/and chlorine, y is 1 or 2, z is molar ratio of nano-metal particles and fluorescent powder CaX.y(CaEuMnO).SiO, 0 Подробнее

Номер записи: 53

28-03-2013 дата публикации

LUMINESCENT MATERIAL OF SILICATE AND PREPARING METHOD THEREOF

Номер: US20130075659A1

Автор: Ma Wenbo, Shi Chaopu, Zhou Mingjie

Принадлежит:

A luminescent material of silicate is provided. The luminescent material has a formula of LnSiO:Ce,Tb,Ag, wherein, Ln is one of Y, Gd, La and Lu, 0 Подробнее

Номер записи: 54

28-03-2013 дата публикации

YTTRIUM OXIDE PHOSPHOR AND PREPARATION METHOD THEREOF

Номер: US20130075662A1

Автор: Lv Ting, Ma Wenbo, Wang Yewen, Zhou Mingjie

Принадлежит: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO LTD

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

Номер записи: 55

28-03-2013 дата публикации

Light emitting module and phosphor

Номер: US20130076234A1

Автор: Hisayoshi Daichou, Kiminori Enomoto

Принадлежит: Koito Manufacturing Co Ltd

A light emitting module includes a light emitting device that emits ultraviolet rays or short-wavelength visible light, a blue phosphor that is excited by the ultraviolet rays or the short-wavelength visible light to emit visible light. The blue phosphor is represented by a general formula of (Ca 1-x-y ,Sr x ,Eu y ) 5 (PO 4 ) 3 Cl, wherein 0.10<x<0.60, 0.002<y<0.060, and 0.02<y/(x+y)<0.17.

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Номер записи: 56

04-04-2013 дата публикации

STRONTIUM CERATE LUMINESCENT MATERIAL AND THE PREPARATION METHOD AND APPLICATION THEREOF

Номер: US20130082208A1

Автор: Liui Jun, Ma Wenbo, Zhou Mingjie

Принадлежит: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LTD.

Disclosed is a strontium cerate luminescent material having a chemical formula of SrCeO:xM and comprising the luminescent material SrCeOand metal nanoparticle M, and the preparation method thereof, where M is at least one of Ag, Au, Pt and Pd, and x is a molar ratio of M to the luminescent material SrCeOand Подробнее

Номер записи: 57

04-04-2013 дата публикации

Semiconductor light-emitting device, semiconductor light-emitting system and illumination fixture

Номер: US20130082289A1

Автор: Hiroaki Sakuta, Yoshihito Satou, Yuki Kohara

Принадлежит: Mitsubishi Chemical Corp

The present invention provides a semiconductor light-emitting device that emits light with a specific low correlated color temperature and with a high Ra, and a semiconductor light-emitting system provided with the semiconductor light-emitting device. This object is attained by the semiconductor light-emitting device having the below-described configuration. A semiconductor light-emitting device includes a LED chip as a semiconductor light-emitting element, and a phosphor emitting light using the LED chip as an excitation source, and emits light with a correlated color temperature equal to or higher than 1600 K and lower than 2400 K. The phosphor includes at least a green phosphor and a red phosphor. In the spectrum of light emitted from the semiconductor light-emitting device, the value of the peak intensity of the light emitted by the LED chip is less than 60% of the maximum peak intensity of the light emitted by the phosphor.

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Номер записи: 58

04-04-2013 дата публикации

COMPOSITE LAYER CONTAINING A LAYER OF PHOSPHORS AND RELATED ELECTROLUMINESCENT DEVICE

Номер: US20130082587A1

Автор: Bonucci Antonio, Corazza Alessio, Vacca Paolo

Принадлежит: SAES GETTERS S.P.A.

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 ...

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Номер записи: 59

04-04-2013 дата публикации

Intensifying screen for x-ray detector, x-ray detector, and x-ray inspection apparatus

Номер: US20130083891A1

Автор: Akihisa Saito, Eiji Oyaizu, Kazumitsu Morimoto, Yoshitaka Adachi

Принадлежит: Toshiba Corp, Toshiba Materials Co Ltd

In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.

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Номер записи: 60

11-04-2013 дата публикации

CERAMIC COMPOSITE FOR LIGHT CONVERSION, PROCESS FOR PRODUCTION THEREOF, AND LIGHT-EMITTING DEVICES PROVIDED WITH SAME

Номер: US20130088143A1

Автор: Iba Hisayoshi, Ichizono Yasuyuki, Ishitobi Shinichi, Miyamoto Norifumi, Ohtsubo Hideki, Sakata Shin-ichi

Принадлежит: UBE INDUSTRIES, LTD.

Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite. The ceramic composite for light conversion is a solidification product including a composition that is represented by a specific formula, and has a texture of continuously and three-dimensionally mutually entangled oxide phases including at least two phases of a first phase and a second phase, characterized in that the first phase is a YAlOfluorescent phase activated with Ce, and the second phase is an AlOphase, and the first phase and second phase account for 97% by area or more of a cross section of the solidification product, or characterized in that the first phase is a YAlOfluorescent phase activated with Gd and Ce, and the second phase is an AlOphase, and the first phase and second phase account for 97% by area or more of a cross section of the solidification product. 19-. (canceled)10. A ceramic composite for light conversion , the ceramic composite being a solidification product comprising a composition represented by the formula (1) , the composition having a texture of continuously and three-dimensionally mutually entangled oxide phases comprising at least two phases of a first phase and a second phase , characterized in that{'sub': 3', '5', '12', '2', '3, 'the first phase is a YAlOfluorescent phase activated with Ce, and the second phase is an AlOphase, and'} [{'br': None, '[Formula 1]'}, {'br': None, 'i': x', 'y', 'a', 'c, 'sub': 3/2', '3/2', '2, 'AlO-(YO-CeO)\u2003\u2003(1)'}], 'the first phase and second phase account for 97% by area or more of a cross section of the solidification product.'}(x, y, a, and c represent molar fractions, 0.770 Подробнее

Номер записи: 61

18-04-2013 дата публикации

SILICATE LUMINESCENT MATERIALS AND PREPARATION METHODS THEREOF

Номер: US20130092876A1

Автор: Liao Qiurong, Ma Wenbo, Zhou Mingjie

Принадлежит: Oceans King Lighting Science & Technology Co., Ltd

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 ...

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Номер записи: 62

18-04-2013 дата публикации

Highly reliable photoluminescent materials having a thick and uniform titanium dioxide coating

Номер: US20130092964A1

Автор: Xufang Chen, Yi-Qun Li, Yuming Xie

Принадлежит: Intematix Corp

Described herein are coated photoluminescent materials and methods for preparing such coated photoluminescent materials. More particularly, provided herein are phosphors coated with titanium dioxide, methods for preparing phosphors coated with titanium dioxide, and solid-state light emitting devices which include phosphors coated with titanium dioxide.

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Номер записи: 63

18-04-2013 дата публикации

B-SIALON AND METHOD OF MANUFACTURING THEREOF, AND LIGHT-EMITTING DEVICE

Номер: US20130093314A1

Автор: Hashimoto Hisayuki, Ichikawa Masayoshi, Nomiyama Tomohiro, Takeda Go, Yamada Suzuya

Принадлежит: DENKI KAGAKU KOGYO KABUSHIKI KAISHA

β-SiAlON represented by a general formula SiAlONwith Eu dissolved therein, whose spin density corresponding to absorption g=2.00±0.02 at 25° C. obtained by the electron spin resonance method is equal to or lower than 6.0×10spins/g. A method of manufacturing the β-SiAlON includes: a mixing step of mixing β-SiAlON materials; a baking step of baking the β-SiAlON having undergone the mixing step; a heating step of increasing the ambient temperature of the materials having undergone the mixing step from 1500° C. to a baking temperature of the baking step at a rate equal to or lower than 2° C/min.; an annealing step of annealing the β-SiAlON having undergone the baking step; and an acid treatment step of acid-treating the β-SiAlON having undergone the annealing step. The objective of the present invention is to provide β-SiAlON capable of achieving high luminescent efficiency, a method of manufacturing the β-SiAlON, and a light-emitting device using the β-SiAlON. 1. β-SiAlON represented by a general formula SiAlONwith Eu dissolved therein in a form of solid solution , wherein spin density corresponding to absorption g=2.00±0.02 at 25° C. obtained by the electron spin resonance method is equal to or lower than 6.0×10spins/g.2. A method of manufacturing the β-SiAlON as set forth in claim 1 , comprising:a mixing step of mixing β-SiAlON materials;a heating step of heating the ambient temperature of the mixed materials from 1500° C. to a baking temperature at a rate equal to or lower than 2° C./rain.;a baking step of baking the mixed materials having undergone the heating step;an annealing step of annealing the β-SiAlON having undergone the baking step; andan acid treatment step of acid-treating the β-SiAlON having undergone the annealing step.3. A method of manufacturing β-SiAlON claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'the mixing step, heating step, baking step, annealing step, and acid treatment step according to the β-SiAlON manufacturing ...

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Номер записи: 64

18-04-2013 дата публикации

SURFACE-TREATED FLUORESCENT BODIES AND PROCESS FOR PRODUCTION OF SURFACE-TREATED FLUORESCENT BODIES

Номер: US20130094186A1

Автор: Nakatani Yasuhiro, Oomura Takahiro, Sun Ren-de, Tanikawa Mitsuru, Watanabe Takashi

Принадлежит: Sekisui Chemical Co., Ltd.

The present invention aims to provide a surface-treated phosphor having high dispersibility and capable of significantly enhancing moisture resistance without deteriorating the fluorescence properties, and a method for producing the surface-treated phosphor. The surface-treated phosphor includes: a phosphor body; and a surface treatment layer containing at least one specific element selected from elements of the third to sixth groups of the periodic table, and fluorine, the phosphor body having the surface treatment layer on the surface thereof, wherein, when a cross section of the surface treatment layer is subjected to a thickness-wise elemental distribution analysis by a combination of an electron microscopic analysis and an energy-dispersive X-ray element analysis, a peak indicating the maximum content of the specific element appears nearer to the surface than a peak indicating the maximum fluorine content. 1. A surface-treated phosphor comprising:a phosphor body; anda surface treatment layer containing at least one specific element selected from elements of the third to sixth groups of the periodic table, and fluorine,the phosphor body having the surface treatment layer on the surface thereof,wherein, when a cross section of the surface treatment layer is subjected to a thickness-wise elemental analysis by a combination of an electron microscopic analysis and an energy-dispersive X-ray element analysis, a peak indicating the maximum content of the specific element appears nearer to the surface than a peak indicating the maximum fluorine content.2. The surface-treated phosphor according to claim 1 ,wherein the surface treatment layer is a single layer, andfluorine is detected at the peak indicating the maximum content of the specific element in the thickness-wise elemental distribution analysis of the cross section of the surface treatment layer.3. The surface-treated phosphor according to claim 1 ,wherein the surface treatment layer includes a fluoride layer, ...

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Номер записи: 65

25-04-2013 дата публикации

Translucent laminated film and solar cell module using it

Номер: US20130098438A1

Автор: Takashige Yoneda, Yohei Kawai

Принадлежит: Asahi Glass Co Ltd

To provide a translucent substrate which sufficiently improves the power generation efficiency of a solar cell, and a solar cell module. A translucent laminated film to be provided on the light receiving surface side of a photoelectric conversion layer, which comprises, in order from the light receiving surface side of the photoelectric conversion layer, a translucent substrate which protects the photoelectric conversion layer, a substrate front side wavelength conversion film having a wavelength conversion function to convert a light in a wavelength region in which the photoelectric conversion efficiency is low, which includes a light in a wavelength region in which the transmittance through at least the translucent substrate is low, into a light in a wavelength region in which the photoelectric conversion efficiency is high, and an antireflection film which reduces reflection of the received light.

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Номер записи: 66

25-04-2013 дата публикации

CORE/SHELL LANTHANUM CERIUM TERBIUM PHOSPHATE, AND PHOSPHOR HAVING IMPROVED THERMAL STABILITY AND INCLUDING SAID PHOSPHATE

Номер: US20130099161A1

Автор: Buissette Valérie, Le-Mercier Thierry

Принадлежит: Rhodia Operations

A phosphate particle with a mean diameter of from 1.5 μm to 15 μm, which has an inorganic core and a shell that covers the inorganic core uniformly over a thickness of no less than 300 nm, is described. The shell can have a lanthanum cerium terbium phosphate of formula LaCeTbPO, where 0.2≦x≦0.35 and 0.19≦y≦0.22. The phosphor is produced by heat-treating a phosphate at a temperature of greater than 900° C. 1. A phosphate comprising particles having a mean diameter of from 1.5 μm to 15 μm , comprised of a mineral core and of a shell based on a lanthanum cerium terbium phosphate and homogeneously covering the mineral core over a thickness equal to or greater than 300 nm , wherein the lanthanum cerium terbium phosphate satisfies the following general formula (1):{'br': None, 'sub': (1-x-y)', 'x', 'y', '4, 'LaCeTbPO\u2003\u2003(1)'}in which x and y satisfy the following conditions:0.2≦x≦0.35, and0.19≦y≦0.22.2. The phosphate as described by claim 1 , wherein the mineral core of the particles is based on a phosphate.3. The phosphate as described by claim 1 , wherein the mineral core of the particles is based on a rare-earth phosphate.4. The phosphate as described by claim 1 , wherein the particles have a mean diameter of from 3 μm to 8 μm.5. The phosphate as described by claim 1 , wherein the mineral core has a specific surface area of at most 1 m/g.6. A phosphor comprising a phosphate as described by claim 1 , wherein the phosphor comprises a phosphate.7. A phosphor obtained by a method in which a phosphate as described by is heat-treated in a reducing atmosphere claim 1 , the heat treatment taking place in the presence claim 1 , as flux claim 1 , of lithium tetraborate (LiBO) in an amount by weight of at most 0.2% claim 1 , at a temperature of from 1050° C. to 1150° C. and over a time of from 2 hours to 4 hours.8. A method of preparing a phosphate as described by claim 1 , the method comprising:(a) gradually and continuously adding an aqueous solution of soluble ...

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Номер записи: 67

25-04-2013 дата публикации

BORATE BASED RED LIGHT EMITTING MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20130099162A1

Автор: Liu Jun, Ma Wenbo, Zhou Mingjie

Принадлежит: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO.,LTD

A borate based red light emitting material is provided, which comprises a core and a shell covering the said core. Said core is nanometer metal particle, and the shell is fluorescent powder having the chemical formula of (YEuGd)BO, wherein Подробнее

Номер записи: 68

02-05-2013 дата публикации

LIGHT EMITTING CERAMIC, LIGHT EMITTING ELEMENT, SCINTILLATOR, AND METHOD FOR PRODUCING LIGHT EMITTING CERAMIC

Номер: US20130105697A1

Автор: Hayashi Takeshi, Kuretake Satoshi

Принадлежит: MURATA MANUFACTURING CO., LTD.

Provided is a light emitting ceramic such as a wavelength conversion ceramic or a radiation-to-light conversion ceramic, which emits light when radiation or light enters the ceramic, and which has a short light emission decay time. The light emitting ceramic is obtained by applying a heat treatment in a reducing atmosphere to a ceramic containing, as its main constituent, a pyrochlore compound represented by ABOwhere A includes at least one of La, Y, Gd, Yb, and Lu, and 0 to 5 mol % of Bi; B is at least one of Sn, Zr, and Hf; and w is a positive number for maintaining electroneutrality. 1. A light emitting ceramic which is a reducing atmosphere heat treated ceramic containing , as its main constituent , a pyrochlore compound represented by ABOin which A comprises at least one member selected from the group consisting of La , Y , Gd , Yb , and Lu , and 0 to 5 mol % of Bi; B is at least one member selected from the group consisting of Sn , Zr , and Hf; w is a positive number for maintaining electroneutrality , and the molar ratio of A/B is 0.95 to 1.05.2. The light emitting ceramic according to claim 1 , having a light transmission of 40% or more at a wavelength of 450 nm to 800 nm at a thickness of 1 mm.3. The light emitting ceramic according to claim 1 , having an emission quantum yield of 3% or more when the ceramic is irradiated with excitation light.4. The light emitting ceramic according to claim 1 , wherein A comprises at least one of La and Y claim 1 , and 0 to 5 mol % of Bi claim 1 , and B comprises Zr.5. The light emitting ceramic according to claim 4 , which at a thickness of 1 mm has a light transmission of 75% or more at a wavelength of 450 nm to 800 nm claim 4 , and an emission quantum yield of 10% or more when the ceramic is irradiated with excitation light.6. The light emitting ceramic according to claim 1 , wherein A contains 0.001 mol % or more of Bi.7. The light emitting ceramic according to claim 6 , which has an emission quantum yield is 10% or ...

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Номер записи: 69

02-05-2013 дата публикации

OXIDE LUMINESCENT MATERIALS AND PREPARATION METHODS THEREOF

Номер: US20130105733A1

Автор: Lu Xinshu, Ma Wenbo, Zhou Mingjie

Принадлежит:

Oxide luminescent materials and preparation methods thereof are provided. The said luminescent materials are represented by the general formula: aReO.bSiO.cEuO.dM, wherein Re is at least one selected from Gd and Y, M is selected from metal nano-particles, (a+c):b=0.5-5, d:b=5×10-5×10, c:(a+c)=0.02-0.1. Compared to the oxide luminescent materials in the art, the said luminescent materials have higher luminescent intensity. 1. An oxide luminescent material containing a luminescent substrate and an activator and metal nano-particles , wherein the activator and the metal nano-particles are doped in the luminescent substrate , the chemical composition of the luminescent substrate is aReO.bSiO , the activator is EuO , and the chemical composition of the luminescent material is aReO.bSiO.cEuO.dM , wherein Re is Gd , Y or the combination thereof , M is a metal nano-particle , and the relationship of a , b , c , and d is: (a+c):b=0.5-5 , d:b=5×10-5×10 , c:(a+c)=0.02-0.1.2. The oxide luminescent material of claim 1 , wherein the material of the metal nano-particles is one or more selected from the group consisting of Ag claim 1 , Au claim 1 , Pt claim 1 , and Pd.3. The oxide luminescent material of claim 1 , wherein the particle size of the metal nano-particles is 5 nm-10 nm.4. A preparation method of oxide luminescent material claim 1 , comprising:a metal nano-particle sol is obtained;{'sup': −5', '−3, 'the metal nano-particle sol is added into a mixture of alcohol and water, the pH thereof is adjusted to 2-6, then a tetraethyl orthosilicate is added in such an amount that the ratio of the metal to the tetraethyl orthosilicate is in the range of 5×10:1-5×10:1, and the mixture is stirred in water bath at the temperature of 25° C.-60° C. to obtain a mixed silica sol;'}with the molar ratio of one or both selected from the group consisting of yttrium nitrate and gadolinium nitrate to europium nitrate being in the range of 0.98:0.02-0.9:0.1, a mixed nitrate solution is prepared, ...

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Номер записи: 70

02-05-2013 дата публикации

RARE EARTH IONS DOPED ALKALI METAL SILICATE LUMINESCENT GLASS AND THE PREPARATION METHOD THEREOF

Номер: US20130105734A1

Автор: Ma Wenbo, Qiao Yanbo, Zhou Mingjie

Принадлежит:

A preparation method of rare earth ions doped alkali metal silicate luminescent glass is provided. The steps involves: step 1, mixing the source compounds of cerium, terbium and alkali metals and putting the mixture into solvent to get a mixed solution; step 2, impregnating the nanometer micropores glass with the mixed solution obtained in step 1; step 3: calcining the impregnated nanometer micropores glass obtained in step 2 in a reducing atmosphere, cooling to room temperature, then obtaining the cerium and terbium co-doped alkali metal silicate luminescent glass. Besides, the rare earth ions doped alkali metal silicate luminescent glass prepared with aforesaid method is also provided. In the prepared luminescent glass, cerium ions can transmit absorbed energy to terbium ions under the excitation of UV light due to the co-doping of cerium ions. As a result, the said luminescent glass has higher luminous intensity than the glass only doped with terbium. 1. A preparation method of rare earth ions doped alkali metal silicate luminescent glass , comprising:step one: mixing the source compounds of cerium, terbium and alkali metal and dissolving them in a solvent to obtain a mixed solution;step two: submerging a nano-porous glass into the mixed solution obtained in step 1 for soaking;step three: sintering the soaked nano-porous glass obtained in step 2 in reductive atmosphere, then cooling to room temperature to obtain a cerium and terbium co-doped alkali metal silicate luminescent glass.2. The preparation method of claim 1 , wherein in step one the source compound of terbium is one or more selected from the group consisting of oxide claim 1 , nitrate claim 1 , chloride and acetate of terbium; the source compound of cerium is one or more selected from the group consisting of oxide claim 1 , nitrate claim 1 , chloride claim 1 , sulfate and acetate of cerium; the source compound of alkali metal is one or more selected from the group consisting of nitrate claim 1 , ...

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Номер записи: 71

02-05-2013 дата публикации

Thermally induced flash synthesis of photoluminescent compositions

Номер: US20130105735A1

Автор: Robert William Hepburn, Willard Scott Rader

Принадлежит: Fujimi Corp, Fujimi Inc

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.

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Номер записи: 72

02-05-2013 дата публикации

Security feature

Номер: US20130106090A1

Автор: Johann Kecht, Kai Uwe Stock, Stephan Steinlein

Принадлежит: Giesecke and Devrient GmbH

The invention relates to a security feature with a luminescent pigment which has a host lattice doped with a luminophore and which is optically excitable to emit luminescent light. The luminescent light of the luminescent pigment has a luminescence spectrum with a first luminescence peak and a second luminescence peak whose peak intensities respectively depend on an amount fraction x of the luminophore in the luminescent pigment. In the luminescent pigment according to the invention, the host lattice and the luminophore and the amount fraction x of the luminophore are chosen such that even a slight increase or reduction of the amount fraction x of the luminophore causes a strong relative change of the peak intensities I A and I B . This increases the forgery-proofness of the luminescent pigment according to the invention.

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Номер записи: 73

02-05-2013 дата публикации

METHOD OF PRODUCING B-SIALON, B-SIALON, AND PRODUCTS USING THE SAME

Номер: US20130106277A1

Автор: Emoto Hideyuki, Ichikawa Masayoshi

Принадлежит: DENKI KAGUKAU KABUSHIKI KASHA

A method of producing β-SiAlON includes a sintering process, in which β-SiAlON starting materials, a mixture of silicon nitride, aluminum nitride, optically active element compound, and at least one compound selected from aluminum oxide and silicon oxide, are sintered at temperatures ranging from 1820° C. to 2200° C. The method provides new β-SiAlON low in carbon content and having high luminescence intensity by placing a plurality of boron nitride vessels in a graphite box to allow the β-SiAlON starting materials packed in the plurality of boron nitride vessels to easily come in contact with nitrogen gas, and performing sintering in nitrogen atmosphere. 1. A method of producing β-SiAlON , comprising a sintering process , in which β-SiAlON starting materials , a mixture of silicon nitride , aluminum nitride , optically active elemental compound , and at least one compound selected from aluminum oxide and silicon oxide , are sintered at temperatures ranging from 1820° C. to 2200° C. , wherein a plurality of boron nitride vessels are placed in a graphite box to allow the β-SiAlON starting materials packed in the plurality of boron nitride vessels to easily come in contact with nitrogen gas , and that sintering is performed in nitrogen atmosphere.2. A method of producing β-SiAlON , comprising a sintering process , in which β-SiAlON starting materials , a mixture of silicon nitride , aluminum nitride , optically active elemental compound , and at least one compound selected from aluminum oxide and silicon oxide , are sintered at temperatures ranging from 1820° C. to 2200° C. , wherein a plurality of boron nitride vessels are placed in a graphite box to allow the β-SiAlON starting materials packed in the plurality of boron nitride vessels to easily come in contact with nitrogen gas , and that sintering is performed in nitrogen atmosphere with the top part of the graphite box opened.3. The method of producing β-SiAlON as set forth in claim 1 , wherein the total volume of ...

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Номер записи: 74

09-05-2013 дата публикации

White Light Emitting Glass-Ceramic and Production Method Thereof

Номер: US20130112919A1

Автор: Ma Wenbo, Weng Fangyi, Zhou Mingjie

Принадлежит:

A white light emitting glass-ceramic. The chemical formula of the glass-ceramic is aSiO.bAlO.cNaF.dCeF.nDyF.mAg, wherein a, b, c, d, n and m are, by mol part, 25-50, 15-30, 10-30, 10-25, 0.01-1 and 0.01-1, respectively, and a+b+c+d-100. A method for producing said glass-ceramic is also provided. Silver ion is doped in the glass-ceramic in the form of silver particles by means of sintering and reduction annealing treatment, and thus the luminescence properties of rare earth ion is improved. 1. A glass ceramic emitting white light , having a chemical formula of:{'br': None, 'i': a', '.b', '.c', 'd', '.n', '.m, 'sub': 2', '2', '3', '3', '3, 'SiOAlONaF.CeFDyFAg,'}wherein a, b, c, d, n and m represent molar parts, and the values of a, b, c, d, n and m are: a is 25˜50, b is 15˜30, c is 10˜30, d is 10˜25, n is 0.01˜1, m is 0.01˜1, and a+b+c+d=100.2. The glass ceramic emitting white light according to claim 1 , wherein the values of a claim 1 , b claim 1 , c claim 1 , d claim 1 , n and m are: a is 35˜50 claim 1 , b is 20˜30 claim 1 , c is 10˜20 claim 1 , d is 10˜20 claim 1 , n is 0.1˜1.3. The glass ceramic emitting white light according to claim 1 , wherein m is 0.01˜0.5.4. A method for producing a white light emitting glass ceramic claim 1 , comprising:{'sub': 2', '2', '3', '3', '3', '3', '2', '2', '3', '3', '3, 'providing raw materials SiO, AlO, NaF, CeF, DyFand AgNOin a stoichiometric ratio according to a chemical formula of aSiO.bAlO.cNaF.dCeF.nDyF.mAg, milling and mixing the raw materials to produce a mixed powder, wherein a, b, c, d, n and m represent molar parts, and the values of a, b, c, d, n and m are: a is 25˜50, b is 15˜30, c is 10˜30, d is 10˜25, n is 0.01˜1, m is 0.01˜1, and a+b+c+d=100;'}calcinating the mixed powder to produce a glass precursor; and {'br': None, 'i': a', '.b', '.c', 'd', '.n', '.m, 'sub': 2', '2', '3', '3', '3, 'SiOAlONaF.CeFDyFAg.'}, 'reductively annealing the glass precursor in a reductive atmosphere, and cooling to produce the white light ...

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Номер записи: 75

09-05-2013 дата публикации

METHOD OF PRODUCING COATED PHOSPHOR, COATED PHOSPHOR AND WHITE LIGHT SOURCE

Номер: US20130113365A1

Автор: Daimon Masahide, Kusunoki Tsuneo, Yamasuge Takehiro

Принадлежит: SONY CHEMICAL & INFORMATION DEVICE CORPORATION

To provide a coated phosphor having good phosphor characteristics that can maintain light emitting characteristic for a long period of time. A mixing process is prepared in which a phosphor and aluminum alkoxide are mixed in a solvent so that the phosphor is coated with an aluminum oxide formed from the aluminum alkoxide, and the phosphor contains Group II element (M), europium (Eu), silicon (Si) and oxygen (O) in atomic weight ratios represented by the following composition formula (1): 2. The method of producing a coated phosphor according to claim 1 , wherein the phosphor and the aluminum alkoxide are mixed in a solvent so as to allow aluminum in the aluminum oxide to have an atomic weight ratio relative to the Group II element (atomic weight of aluminum/ atomic weight of Group II element) in the phosphor in a range from 0.10 to 0.29.3. The method of producing a coated phosphor according to claim 2 , wherein in the mixing step claim 2 , the phosphor and the aluminum alkoxide are mixed in the solvent at a temperature in a range from to 30 to 50° C.4. The method of producing a coated phosphor according to claim 2 , wherein in the mixing step claim 2 , the phosphor and the aluminum alkoxide are reacted with each other in the solvent for 30 to 90 minutes.7. The coated phosphor according to claim 6 , wherein aluminum in the aluminum oxide has an atomic weight ratio relative to the Group II element (atomic weight of aluminum/atomic weight of Group II element) in the phosphor in a range from 0.10 to 0.29. 1. Field of the InventionThe present invention relates to a method of producing a coated phosphor in which a phosphor is coated with a coating material, such a coated phosphor and a white light source.2. Description of the Related ArtIn an attempt to carry out a metal coating process on a phosphor having low moisture resistance, for example, Patent Literature 1 (JP-A No. 2007-23221) has proposed a technique (sol-gel method) which utilizes a hydrolysis reaction of metal ...

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Номер записи: 76

09-05-2013 дата публикации

MAGNETIC NANOPHOSPHOR HAVING CORE/SHELL STRUCTURE AND THE SYNTHETIC METHOD THEREOF

Номер: US20130115172A1

Автор: JANG Ho Seong, LIM Kipil, WOO Kyoungja

Принадлежит: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

The present invention relates to a nanophosphor and method for synthesizing the same, and provides a nanophosphor containing fluoride-based nanoparticles co-doped with Yb and Er expressed by the following Chemical Formula 1, 1. A nanophosphor comprising fluoride-based nanoparticles co-doped with Yb and Er expressed by the following Chemical Formula 1 ,{'br': None, 'sub': 1−w−z−x−y', 'w', 'z', '4', 'x', 'y, 'sup': 3+', '3+, 'NaYGdLF:Yb,Er\u2003\u2003(1)'}Wherein,x is a real number in the range of 0.1≦x≦0.9; y is a real number in the range of 0 Подробнее

Номер записи: 77

09-05-2013 дата публикации

Anistropic semiconductor nanoparticles

Номер: US20130115455A1

Автор: Adiel Zimran, Amit Sitt, Itai Lieberman, Uri Banin

Принадлежит: Yissum Research Development Co of Hebrew University of Jerusalem

The present invention provides seeded rod (SR) nanostructure systems including an elongated structure embedded with a seed structure being a core/shell structure or a single-material rod element. The SR systems disclosed herein are suitable for use in a variety of electronic and optical devices.

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Номер записи: 78

16-05-2013 дата публикации

LUMINESCENT BORATES, MATERIALS AND ARTICLES INCORPORATING SUCH BORATES, AND METHODS AND APPARATUS FOR THEIR PRODUCTION AND USE IN ARTICLE AUTHENTICATION

Номер: US20130119274A1

Автор: Kane James, Lau Carsten, Rapoport William Ross

Принадлежит: HONEYWELL INTERNATIONAL INC.

Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element, neodymium substituted for the first substitutable element at a first substitution percentage of at least about 20 percent, and ytterbium substituted for the first substitutable element at a second substitution percentage. The material also may include chromium substituted for a second substitutable element. The material also may include a medium within which particles of the borate are incorporated. The medium, with the luminescent material particles, may form a security feature of an article. Embodiments of methods for identifying whether such a luminescent material is incorporated with an article include exposing a portion of the article to excitation in a chromium absorption band, and determining whether a detected emission produced by the article as a result of the excitation indicates an ytterbium emission after termination of the exposing step. 1. A luminescent material comprising:a borate having a crystal structure and including a substitutable element;neodymium substituted for the substitutable element at a first substitution percentage of at least about 20 percent; andytterbium substituted for the substitutable element at a second substitution percentage.2. The luminescent material of claim 1 , wherein the borate has a formula MeXBO claim 1 , and wherein:Me is the substitutable element, which is selected from a group consisting of yttrium, lanthanum, gadolinium, lutetium, and a mixture thereof,X is an element selected from a group consisting of aluminum, scandium, and gallium,B is boron, andO is oxygen.3. The luminescent material of claim 2 , further comprising chromium substituted for X at a third substitution percentage up to 100 percent.4. The luminescent material of claim 1 , wherein the borate has the formula YAlBO claim 1 , where Y is the substitutable element yttrium claim 1 , Al is aluminum claim 1 ...

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Номер записи: 79

16-05-2013 дата публикации

SILICATE FLUORESCENT MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20130119313A1

Автор: Ma Wenbo, Qiao Yanbo, Zhou Mingjie

Принадлежит:

A silicate fluorescent material is provided. The general chemical formula of the luminescent material is LnSiO:Tb, M, wherein Ln represents at least one of the elements selected from Y, Gd, La or Lu, M represents at least one of the nanoparticles selected from Ag, Au, Os, Ir, Pt, Ru, Rh or Pd, the mole ratio of Tb to Ln is greater than 0 but not greater than 0.25. The porous glass containing metal nanoparticles is prepared by introducing metal nano ions into the porous glass and extracting the uniformly dispersed metal nanoparticles from the porous glass via a chemical reduction method. A silicate fluorescent material with enhanced luminescence is obtained by substituting SiOwhich is the raw material in the process for preparing the silicate fluorescent material via the conventional high temperature solid phase sintering with the porous glass containing metal nanoparticles. The performance of the silicate fluorescent material is better and the light emitting efficiency of the silicate fluorescent material is higher compared with the conventional silicate fluorescent material. 2. A preparation method of the silicate fluorescent material according to claim 1 , comprising following steps:preparing an aqueous solution containing M ions;immersing a porous glass into the solution containing M ions;immersing the obtained porous glass into a reducing agent solution to obtain a porous glass containing M;{'sub': 2', '5, 'providing the porous glass containing M, a LnSiOraw material, and Tb source compounds according to the mole ratio of Tb to Ln of greater than 0 but less than or equal to 0.25, and grinding to obtain a mixture powder; and'}{'sub': 2', '5, 'sintering the mixture powder in reducing atmosphere, at a temperature of 1300° C. to 1600° C. for 1 to 8 hours, and then cooling to room temperature to obtain the silicate fluorescent material having the chemical formula of LnSiO:Tb, M.'}3. The preparation method of the silicate fluorescent material according to claim 2 , ...

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Номер записи: 80

16-05-2013 дата публикации

ULTRAVIOLET LIGHT EMITTING MATERIAL, METHOD FOR PRODUCING SAME, AND LIGHT EMITTING ELEMENT USING SAME

Номер: US20130119381A1

Автор: Asano Hiroshi, Inoue Osamu, Izuchi Masumi, Nishitani Mikihiko, Sakai Masahiro

Принадлежит: Panasonic Corporation

The present invention provides a zinc oxide-based ultraviolet light emitting material showing intense emission in the ultraviolet region. The present invention is an ultraviolet light emitting material containing: zinc and oxygen as main components; at least one element selected from the group consisting of aluminum, gallium, and indium, as a first sub-component; and phosphorus as a second sub-component. This material has n-type conductivity. 1. An ultraviolet light emitting material comprising:zinc and oxygen as main components;at least one element selected from the group consisting of aluminum, gallium, and indium, as a first sub-component; andphosphorus as a second sub-component, whereinthe material has n-type conductivity.2. The ultraviolet light emitting material according to claim 1 , wherein a total content of aluminum claim 1 , gallium claim 1 , and indium is not less than 0.03 at. % and not more than 3.0 at. % relative to zinc.3. The ultraviolet light emitting material according to claim 1 , wherein a content of phosphorus is not less than 0.03 at. % and not more than 3.0 at. % relative to zinc.4. The ultraviolet light emitting material according to claim 1 , wherein the first sub-component is gallium.5. The ultraviolet light emitting material according to claim 1 , further comprising tungsten as a third sub-component.6. The ultraviolet light emitting material according to claim 5 , wherein a content of tungsten is not less than 0.01 at. % and not more than 1.0 at. % relative to zinc.7. A method for producing the ultraviolet light emitting material according to claim 1 , the method comprising the step of reacting: a source of zinc; a source of oxygen; a source of at least one first sub-component element selected from the group consisting of aluminum claim 1 , gallium claim 1 , and indium; and a source of phosphorus claim 1 , whereina compound containing the first sub-component element and phosphorus is used as the source of the first sub-component element ...

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Номер записи: 81

16-05-2013 дата публикации

BETA-SIALON, AND LIGHT EMITTING DEVICE AND APPLICATIONS THEREOF

Номер: US20130120691A1

Автор: Emoto Hideyuki, Nagumo Toshiaki

Принадлежит: DENKI KAGAKU KOGYO KABUSHIKI KAISHA

An object of the present invention is to provide a phosphor that is combined with a blue LED to achieve white light at a low color temperature as if singly, has a broad fluorescence spectrum for excellent color rendering properties, has a high luminous efficiency, is thermally and chemically stable like conventional nitride-based phosphors, and has a small decrease in luminance at high temperatures. Another object of the present invention is to provide a light emitting device using such a phosphor. The present invention relates to a β-sialon that is expressed by the general formula, SiAlON:Eu (0 Подробнее

Номер записи: 82

16-05-2013 дата публикации

ALUMINATE PHOSPHORS

Номер: US20130120964A1

Автор: Petry Ralf, Vosgroene Tim, Winkler Holger

Принадлежит: Merck Patent GmBH

The invention relates to compounds of the general formula (I) SrLuSiAlO:Ce(I) where x stands for a value from the range from 0.01 to 0.1 and a process for the preparation of these phosphors, and the use thereof as conversion phosphors or in lamps. 1. Compound of the formula I{'br': None, 'sub': 2-x', '4', '12, 'SrLuSiAlO:Cex\u2003\u2003(I)'}wherex stands for a value from the range from 0.01 to 0.15.2. Compound according to claim 1 , characterised in that x stands for a value from the range from 0.015 to 0.12 claim 1 , preferably from the range from 0.016 to 0.10.3. Process for the preparation of a compound according to claim 1 , comprising the following process steps:a) mixing of lutetium-, cerium-, aluminium-, strontium- and silicon-containing materials,b) addition of at least one further inorganic and/or organic substance,c) thermal aftertreatment of the cerium-activated compound.4. Process according to claim 3 , characterised in that the compounds are prepared by wet-chemical methods from inorganic and/or organic metal and/or rare-earth salts by means of sol-gel methods claim 3 , precipitation methods and/or drying methods claim 3 , preferably spray drying.5. Process according to claim 3 , characterised in that the inorganic or organic substances (process step b) are selected from the group of the ammonium halides claim 3 , alkaline-earth metal fluorides claim 3 , such as calcium fluoride claim 3 , strontium fluoride or barium fluoride claim 3 , borates claim 3 , boric acid claim 3 , carbonates claim 3 , preferably ammonium hydrogencarbonate claim 3 , alcoholates claim 3 , such as oxalates claim 3 , and/or silicic acid esters claim 3 , such as TEOS.6. Mixture comprising at least one compound of the formula I according to and at least one red-emitting phosphor.7. Mixture according to claim 6 , characterised in that said at least one red-emitting phosphor is selected from Ce-doped garnets claim 6 , Eu-doped thiogallates claim 6 , Eu-doped sulfoselenides and Eu- and ...

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Номер записи: 83

16-05-2013 дата публикации

CARBODIIMIDE PHOSPHORS

Номер: US20130121014A1

Автор: Benker Andreas, Petry Ralf, Vosgroene Tim, Winkler Holger

Принадлежит: Merck Patent Gesellschaft Mit Beschrankter Haftung

The invention relates to carbodiimide compounds of the general formula (I) EASi(CN)O:Euwhere EA stands for one or more elements selected from Mg, Ca, Sr, Ba or Zn and x stands for a value from the range from 0 to 3.9 and Y stands for a value from the range from 0.01 to 0.4, and a process for the preparation of these phosphors and the use thereof as conversion phosphors or in lamps. 2. Compound according to claim 1 , characterised in that x stands for a value from the range from 0 to 3.0 claim 1 , preferably from the range from 0 to 2.5.3. Compound according to claim 1 , characterised in that y stands for a value from the range from 0.02 to 0.35 claim 1 , preferably from the range from 0.04 to 0.30.4. Process for the preparation of a compound according to claim 1 , comprising the following process steps:a) mixing of at least 3 starting materials selected from calcium-, strontium-, barium-, magnesium-, zinc-, silicon- and/or europium-containing materials,b) optionally addition of at least one further inorganic or organic substance,c) thermal aftertreatment of the compound.5. Process according to claim 4 , characterised in that the inorganic or organic substances (process step b) are selected from the group of ammonium halides claim 4 , preferably ammonium chloride claim 4 , alkaline-earth metal fluorides claim 4 , such as calcium fluoride claim 4 , strontium fluoride or barium fluoride claim 4 , borates claim 4 , boric acid claim 4 , carbonates claim 4 , such as ammonium hydrogencarbonate claim 4 , alcoholates claim 4 , oxalates and/or silicates claim 4 , such as tetraethyl orthosilicate (TEOS).6. Light source claim 1 , characterised in that it comprises at least one semiconductor and at least one phosphor of the formula I according to .7. Light source according to claim 6 , characterised in that the semiconductor is a luminescent indium aluminium gallium nitride claim 6 , in particular of the formula{'br': None, 'sub': i', 'j', 'k, 'i': ≦i,', '≦j,', '≦k,', 'i+j+k=, ' ...

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Номер записи: 84

16-05-2013 дата публикации

LUMINESCENT BORATES, MATERIALS AND ARTICLES INCORPORATING SUCH BORATES, AND METHODS AND APPARATUS FOR THEIR PRODUCTION AND USE IN ARTICLE AUTHENTICATION

Номер: US20130122266A1

Автор: Kane James, Lau Carsten, Rapoport William Ross

Принадлежит: HONEYWELL INTERNATIONAL INC.

Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element and a second substitutable element, one or more rare earth ions substituted for the first substitutable element, and chromium substituted for the second substitutable element. The one or more rare earth ions are selected from a group consisting of neodymium and ytterbium. The material also may include a medium within which particles of the borate are incorporated. The medium, with the luminescent material particles, may form a security feature of an article. Embodiments of methods for identifying whether such a luminescent material is incorporated with an article include exposing a portion of the article to excitation in a chromium absorption band, and determining whether a detected emission produced by the article as a result of the excitation indicates an ytterbium emission after termination of the exposing step. 1. A luminescent material comprising:a borate having a crystal structure and including a first substitutable element and a second substitutable element;one or more rare earth ions substituted for the first substitutable element, wherein the one or more rare earth ions are selected from a group consisting of neodymium and ytterbium; andchromium substituted for the second substitutable element.2. The luminescent material of claim 1 , wherein the borate has a formula MeXBO claim 1 , whereinMe is the first substitutable element, which is selected from a group consisting of yttrium, lanthanum, gadolinium, lutetium, and a mixture thereof,X is the second substitutable element, which is selected from a group consisting of aluminum, scandium, and gallium,B is boron, andO is oxygen.3. The luminescent material of claim 1 , wherein the borate has the formula YAlBO claim 1 , where Y is the first substitutable element yttrium claim 1 , Al is the second substitutable element aluminum claim 1 , B is boron claim 1 , and O ...

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Номер записи: 85

23-05-2013 дата публикации

Ce3+ ACTIVATED MIXED HALIDE ELPASOLITES AND HIGH ENERGY RESOLUTION SCINTILLATOR

Номер: US20130126741A1

Автор: CLARKE Lucas Lemar, Comanzo Holly Ann, DENG Qun, DUCLOS Steven Jude, Srivastava Alok Mani, VENKATARAMANI Venkat Subramaniam

Принадлежит: GENERAL ELECTRIC COMPANY

A scintillator composition is described. The scintillator composition includes a matrix material and an activator. The matrix material includes at least one alkali metal or thallium; at least one alkali metal, different than the previously selected alkali metal; at least one lanthanides; and at least two halogens. The activator is cerium. Further, radiation detectors, which include the scintillator composition and methods for detecting high-energy radiation are also described and form part of this disclosure. 1. A scintillator composition comprising the following and any reaction products thereof: a first component of at least one element selected from the group consisting of alkali metals and thallium;', 'a second component of at least one element, different from the at least one element of the first component, selected from the group consisting of alkali metals;', 'a third component of at least one element selected from the group consisting of lanthanides; and', 'a fourth component of at least two elements selected from the group consisting of halogens; and, 'a matrix material comprisingan activator for the matrix material, comprising cerium.2. The scintillator composition of claim 1 , wherein the alkali metal of the first component is selected from the group consisting of potassium claim 1 , rubidium claim 1 , cesium and combinations thereof.3. The scintillator composition of claim 1 , wherein the alkali metal of the second component is selected from the group consisting of lithium claim 1 , sodium and combinations thereof.4. The scintillator composition of claim 1 , wherein said lanthanide of the third component is lanthanum.5. The scintillator composition of claim 1 , wherein the halogens of the fourth component are selected from the group consisting of fluorine claim 1 , chlorine claim 1 , bromine claim 1 , iodine and combinations thereof6. The scintillator composition of claim 1 , wherein the halogens of the fourth component are bromine and iodine in a ratio ...

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Номер записи: 86

23-05-2013 дата публикации

METAL NANO PARTICLES DOPED WITH SILICATE LUMINESCENT MATERIALS AND PREPARATION METHODS THEREOF

Номер: US20130126785A1

Автор: Ma Wenbo, Shi Chaopu, WANG Rong, Zhou Mingjie

Принадлежит: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LTD.

Metal nano particles doped with silicate luminescent materials and preparation methods thereof are provided. The luminescent materials are represented by the general formula: (SrAEu)SiO:Dz@M, wherein A is one or two selected from alkaline-earth metal elements, D is F or Cl, @ is for coating, M is one or two selected from Ag, Au, Pt, Pd or Cu metal nano particles, 0≦x≦0.5, 0.001 Подробнее

Номер записи: 87

23-05-2013 дата публикации

Color Adjustable Luminescent Powder and Preparation Method Thereof

Номер: US20130126786A1

Автор: Lu Ting, Ma Wenbo, Wang Yewen, Zhou Mingjie

Принадлежит: Ocean's King Lighting Science & Technology Co., Ltd.

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 ...

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Номер записи: 88

23-05-2013 дата публикации

Oxynitride-based phosphor and light emitting device including the same

Номер: US20130127330A1

Автор: Hyong Sik Won, Kee Sun Sohn, Woon Bae Park

Принадлежит: Industry Academy Cooperation Foundation of SCNU, SAMSUNG ELECTRONICS CO LTD

There are provided an oxynitride-based phosphor and a light emitting device including the same, the oxynitride-based phosphor containing at least calcium (Ca), barium (Ba), silicon (Si), oxygen (O), and nitrogen (N) as host material components in a host material and having a rare-earth element dissolved in the host material as an activator, wherein the rare-earth element is at least one from a group consisting of manganese (Mn), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), dysprosium (Dy), terbium (Tb), holmium (Ho), erbium (Er), thulium (Tm), and ytterbium (Yb), and the host material has a monoclinic crystal structure in which a crystal lattice according to a peak of an X-ray powder diffraction pattern has values of a=7.076, b=23.888, c=4.827, α=y=90°, and β=109.110°.

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Номер записи: 89

23-05-2013 дата публикации

Fluorescent member and light emitting module

Номер: US20130127331A1

Автор: Masanobu Mizuno, Takashi Onishi, Yasuaki Tsutsumi

Принадлежит: Koito Manufacturing Co Ltd

In a plate-shaped fluorescent member configured to convert the wavelength of the light emitted by a semiconductor light emitting element, the fluorescent member is formed of an inorganic material having a refractive index of 1.5 or more and a light transmittance at the emission peak wavelength of the semiconductor light emitting element of less than 20%. A concave portion is formed, of the surfaces of the fluorescent member, on the surface on the side where the light in the semiconductor light emitting element is mainly emitted. In the fluorescent member, the light transmittance of the light having a wavelength of 380 nm to 500 nm may be less than 20%. The concave portion may be a groove. The concave portion may be a plurality of holes that are scattered.

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Номер записи: 90

23-05-2013 дата публикации

Oxynitride luminescent material, preparation method thereof and illumination light source made from such material

Номер: US20130127333A1

Автор: Haisong Wang, Peng Bao, Xiaoqing JIA

Принадлежит: Beijing Yuji Science and Technology Co Ltd

A nitrogen oxide luminescence material, with chemical formula: M 1−y X 4−x Z 1+x O x N 7−x x: R y , in which M represents one or several alkali, alkaline earth, rare earth and transition metals. X represents Si with one or several of Si, Ge, B and Al. Z represents Al with one or several of Al, Ga, In. R represents one or several of luminescence center elements Eu, Ce, Tb, Yb, Sm, Pr and Dy. In the formula, 0≦x<0.5, 0<y<1.0. The luminescence material can be excited by ultraviolett, near ultraviolet or blue light, and emits yellow or red light with wavelength between 500-750 nm. With the ultraviolet, near ultraviolet or blue lights, and other types of luminescence materials, such as green fluorescent powder, a new white LED can be obtained. The luminescence material has a wider excitation spectrum range, and is efficient and stable. Preparation is simple, easy to mass-produce and pollution-free.

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Номер записи: 91

06-06-2013 дата публикации

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

Номер: US20130140490A1

Автор: Fujinaga Masataka, Jida Shinsuke, Sakai Takuma, Ueda Takayuki

Принадлежит: UBE INDUSTRIES, LTD.

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 ...

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Номер записи: 92

06-06-2013 дата публикации

Green to Yellow Light-Emitting Aluminate Phosphors

Номер: US20130140491A1

Автор: Duan Chengjun, Li Yi-Qun, Xie Yuming

Принадлежит: INTEMATIX CORPORATION

A green and yellow emitting lutetium aluminate based photoluminescent material having the formula (LuGdCe)BAlOCwherein: B is one or more of Mg, Sr, Ca or Ba; C is F, Cl, Br or I; 0 Подробнее

Номер записи: 93

06-06-2013 дата публикации

Borate luminescent materials, preparation methods and uses thereof

Номер: US20130140492A1

Автор: Jun Liu, Mingjie Zhou, Wenbo Ma

Принадлежит: Oceans King Lighting Science and Technology Co Ltd

Borate luminescent materials, preparation methods and uses thereof are provided. The luminescent materials are represented by the general formula: (In 1-x Re x )BO 3 :zM, wherein Re is one or two selected from Tm, Tb, Eu, Sm, Gd, Dy and Ce, M is one or two selected from metal nano particles of Au, Ag, Pt or Pd, 0 <x≦ 0.5, 0 <z≦ 1×10 −2 . Compared to the luminescent materials in the prior art, the said luminescent materials have higher luminous intensity and luminous efficiency, which can be used in field emission displays or light source.

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Номер записи: 94

06-06-2013 дата публикации

LUMINESCENT SUBSTANCE AND LIGHT SOURCE HAVING SUCH A LUMINESCENT SUBSTANCE

Номер: US20130140981A1

Автор: Huber Gunter, Huckenbeck Barbara, Jermann Frank, Pohl Bianca

Принадлежит:

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

Номер записи: 95

13-06-2013 дата публикации

Yttrium aluminum garnet phosphor, method for preparing the same, and light-emitting diode containing the same

Номер: US20130146918A1

Автор: Chen In-Gann, LU Heueh-Jung, MA Chia-Wei, NIEN Yung-Tang

Принадлежит: NATIONAL CHENG KUNG UNIVERSITY

The present invention relates to yttrium aluminum garnet phosphor, a method of preparing the same and a light-emitting diode containing the same. The yttrium aluminum garnet phosphor of the present invention is represented by the following formula (I): 206. The yttrium aluminum garnet phosphor material of claim 1 , wherein 0.06≦b≦..306. The yttrium aluminum garnet phosphor material of claim 1 , wherein 0.2≦b≦..4. The yttrium aluminum garnet phosphor material of claim 1 , wherein M is at least one selected from the group consisting of cerium claim 1 , terbium claim 1 , and europium.5. The yttrium aluminum garnet phosphor material of claim 1 , wherein M is Ce.6. The yttrium aluminum garnet phosphor material of claim 1 , which is an yttrium aluminum garnet phosphor ceramic plate.7. A method of manufacturing an yttrium aluminum garnet phosphor material claim 1 , comprising:(A) providing a precursor powder that includes yttrium, aluminum and a metal, where the metal is at least one selected from the group consisting of Ce, Dy, Gd, Eu, Tb, La, Pr, Nd and Sm;(B) pre-sintering the precursor powder to obtain a phosphor precursor;(C) adding a silicon precursor in the phosphor precursor; and(D) sintering a mixture of the silicon precursor and the phosphor precursor to obtain the yttrium aluminum garnet phosphor material.8. The method of claim 7 , wherein the phosphor precursor is prepared by a process including chemical co-precipitation method claim 7 , solid state reaction method claim 7 , sol-gel method claim 7 , spray pyrolysis method claim 7 , combustion method claim 7 , hydrothermal synthesis claim 7 , sintering method or microwave-assisted combustion method.9. The method of claim 7 , wherein the step (A) is performed by providing and mixing an aluminum precursor claim 7 , an yttrium precursor and a metal precursor to form the precursor powder.10. The method of claim 9 , wherein the aluminum precursor is aluminum nitrate or aluminum oxide claim 9 , the yttrium precursor ...

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Номер записи: 96

13-06-2013 дата публикации

Phosphor and light emitting device

Номер: US20130146930A1

Автор: Kenji Toda, Tadashi Ishigaki

Принадлежит: Panasonic Corp

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.

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Номер записи: 97

13-06-2013 дата публикации

Phosphor, Lighting Fixture, and Image Display Device

Номер: US20130147341A1

Автор: HIROSAKI Naoto, Horie Tatsuya, Takeda Takahashi

Принадлежит:

A phosphor substituting the conventional sialon phosphor or oxide phosphor activated by rare earth and an application thereof are provided. The phosphor of the present invention comprises an inorganic crystal including at least La, Si, Al, N (nitrogen), M element (M is at least one kind of element selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb), and O (oxygen) if necessary and the inorganic crystal is a host crystal, which is LaSiAlNcrystal or a solid-solution crystal thereof, activated by the M element. 1. A phosphor comprising an inorganic crystal including: La , Si , Al , N (nitrogen) , M element (M is at least one kind of element selected from a group consisting of Ce , Pr , Nd , Sm , Eu , Gd , Tb , Dy , Ho , Er , Tm , and Yb) , and O (oxygen) if necessary;{'sub': 9', '19', '32', '9', '19', '32, 'wherein said inorganic crystal comprises LaSiAlNcrystal or a solid solution crystal of LaSiAlNcrystal as a host crystal, which is activated by said M element.'}2. The phosphor according to wherein said host crystal is LaSiAlNcrystal.3. The phosphor according to wherein said inorganic crystal is LaMSiAlONcrystal (here claim 1 , x satisfies: 0.001≦x≦0.99 and y satisfies: 0.001≦y≦0.99).4. The phosphor according to wherein said inorganic crystal is LaEuSiAlONcrystal (here claim 1 , x satisfies: 0.001≦x≦0.99 and x=y).5. The phosphor according to wherein said inorganic crystal is LaCeSiAlNcrystal (here claim 1 , x satisfies: 0.001≦x≦0.99).6. The phosphor according to wherein an atomic fraction a of said La claim 1 , an atomic fraction b of said Si claim 1 , an atomic fraction c of said Al claim 1 , an atomic fraction d of said O claim 1 , an atomic fraction e of said N claim 1 , and an atomic fraction f of said M element in said inorganic crystal satisfies:{'br': None, '0.0001≦a≦0.03\u2003\u2003(i),'}{'br': None, '0.1≦b≦0.2\u2003\u2003(ii),'}{'br': None, '0.25≦c≦0.4\u2003\u2003(iii),'}{'br': None, '0≦d≦0.1\u2003\u2003(iv),'}{'br': None ...

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Номер записи: 98

13-06-2013 дата публикации

OXYNITRIDE-BASED PHOSPHOR, LIGHT EMITTING DEVICE INCLUDING THE SAME AND METHOD FOR PREPARING AN OXYNITRIDE-BASED PHOSPHOR

Номер: US20130147342A1

Автор: PARK Un Bae, Sohn Kee Sun, WON Hyong Sik

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

There are provided an oxynitride-based phosphor and a light emitting device including the same. The oxynitride-based phosphor has a rare-earth element dissolved in a host material represented by a general formula: CaSiON. The rare-earth element is at least one selected from a group consisting of manganese (Mn), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), dysprosium (Dy), terbium (Tb), holmium (Ho), erbium (Er), thulium (Tm) and ytterbium (Yb). The host material has a crystal lattice according to a peak of an X-ray powder diffraction pattern, and the crystal lattice has a cubic crystal structure. 1. An oxynitride-based phosphor comprising: {'br': None, 'sub': 15', '20', '10', '30, 'CaSiON,'}, 'a rare-earth element dissolved in a host material, the host material represented by a general formulawherein the rare-earth element is at least one selected from a group consisting of manganese (Mn), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), dysprosium (Dy), terbium (Tb), holmium (Ho), erbium (Er), thulium (Tm) and ytterbium (Yb), andthe host material has a crystal lattice according to a peak of an X-ray powder diffraction pattern, the crystal lattice having a cubic crystal structure.2. The oxynitride-based phosphor of claim 1 , wherein when the rare-earth element is denoted as Re claim 1 , the oxynitride-based phosphor is represented by a general formula: (Ca)SiON:Re(0.0001 Подробнее

Номер записи: 99

13-06-2013 дата публикации

PHOSPHOR COMPOSITION, LIGHT EMITTING DEVICE, AND THE METHOD OF PREPARING THE PHOSPHOR COMPOSITION

Номер: US20130147343A1

Автор: JO Sung Hak, KIM Seong Min, MIN Chan Suk, PARK Youn Gon, WON Hyong Sik, YOON Chul Soo

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

There are provided a phosphor and a light emitting device. The phosphor includes a phosphor composition including a rare-earth element employed in a compound represented by the equation: LSiN, wherein L is one or more elements selected from La, Y, Gd and Lu, the rare-earth element is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm and Yb. The phosphor composition is provided in particle form. The particle has at least a portion of a plane perpendicular to a [001] direction to be flat thereon so as to have a crystal plane. 1. A phosphor composition comprising: [{'br': None, 'sub': 3', '6', '11, 'LSiN,'}, 'L being one or more elements selected from a group consisting of lanthanum (La), yttrium (Y), gadolinium (Gd) and lutetium (Lu),', 'the rare-earth element selected from one or more of: manganese (Mn), cerium (Ce), Pr, neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), dysprosium (Dy), terbium (Tb), holmium (Ho), erbium (Er), thulium (Tm), and ytterbium (Yb),, 'a rare-earth element employed in a compound represented by the following equationwherein the composition is in a particle form, the particle having at least a portion of a plane perpendicular to a [001] direction to be flat thereon so as to have a crystal plane.2. The phosphor composition of claim 1 , wherein the particle has a flat shape in which 50% or more of the plane thereof perpendicular to the [001] direction has the crystal plane.3. The phosphor composition of claim 1 , wherein the particle has a flat shape in which at least a portion of a plane perpendicular to another direction different from the [001] direction has the crystal plane.4. The phosphor composition of claim 3 , wherein in the particle claim 3 , a ratio of a length of the plane thereof perpendicular to the [001] direction to that of the plane perpendicular to another direction claim 3 , different from the [001] direction ranges from 1:3 to 3:1.5. The phosphor composition of claim 1 , wherein ...

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Номер записи: 100