Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 12. Отображено 9.
28-02-2013 дата публикации

Multijunction Solar Cells Lattice Matched to InP Using Sb-Containing Alloys

Номер: US20130048063A1
Автор: Abell Joshua, Adams Jessica, Chan Ngai, Cress Cory, Ekins-Daukes Nicholas, Gonzalez Maria, Jenkins Phillip, Lumb Matthew P., Meyer Jerry R., Stavrinou Paul, Tischler Joseph G., Vurgaftman Igor, Walters Robert J., Yakes Michael K.
Принадлежит: The Government of the United States of America, as represented by the Secretary of the Navy

A multijunction (MJ) solar cell grown on an InP substrate using materials that are lattice-matched to InP. In an exemplary three-junction embodiment, the top cell is formed from InAlAsSb(with x and y adjusted so as to achieve lattice-matching with InP, hereafter referred to as InAlAsSb), the middle cell from InGaAlAs (with a and b adjusted so as to achieve lattice-matching with InP, hereafter referred to as InGaAlAs), and the bottom cell also from InGaAlAs, but with a much lower Al composition, which in some embodiments can be zero so that the material is InGaAs. Tunnel junctions (TJs) connect the junctions and allow photo-generated current to flow. In an exemplary embodiment, an InAlAsSb TJ connects the first and second junctions, while an InGaAlAs TJ connects the second and third junctions. 1. A solar cell , comprising:a heterostructure formed on a substrate from materials lattice-matched to the substrate, the heterostructure being configured to form a top cell, a bottom cell, and at least one middle cell situated between the top and bottom cells, each cell comprising a corresponding p-n junction and being separated from an adjacent cell by a corresponding tunnel junction, a material forming each of the substrate and the top, bottom, and middle cells having an associated band gap;wherein the material for the substrate and each of the top, bottom, and middle cells is configured based on an evaluation of its ability to optimize an overall band gap configuration of the solar cell and maximize its conversion efficiency while minimizing radiative efficiency.2. The solar cell according to claim 1 , wherein the substrate comprises one of GaAs claim 1 , InP claim 1 , InAs claim 1 , and GaSb.3. The solar cell according to claim 1 , wherein the top cell is configured to have a band gap of between about 1.6 and about 1.9 eV.4. The solar cell according to claim 2 , wherein the top cell comprises wherein the top cell is composed of an InAlAsSballoy where x and y are adjusted ...

Подробнее
Номер записи: 1
15-05-2014 дата публикации

Spray Deposition Method for Inorganic Nanocrystal Solar Cells

Номер: US20140130868A1
Автор: Edward E. Foos, Joseph G. Tischler, Woojun Yoon
Принадлежит: US Department of Navy

A method of spray deposition for inorganic nanocrystal solar cells comprising subjecting a first solution of CdTe or CdSe nanocrystals to ligand exchange with a small coordinating molecule, diluting the first solution in solvent to form a second solution, applying the second solution to a substrate, drying the substrate, dipping the substrate in a solution in MeOH of a compound that promotes sintering, washing the substrate with iPrOH, drying the substrate with N 2 , and heating and forming a film on the substrate. An inorganic nanocrystal solar cell comprising a substrate, a layer of metal, a layer of CdTe, a layer of CdSe, and a layer of transparent conductor. An inorganic nanocrystal solar cell comprising a transparent conductive substrate, a layer of CdSe, a layer of CdTe, and a Au contact.

Подробнее
Номер записи: 2
15-05-2014 дата публикации

Inorganic Nanocrystal Solar Cells

Номер: US20140130869A1
Автор: Foos Edward E., Tischler Joseph G., Townsend Troy K., Yoon Woojun
Принадлежит: The Government of the United States of America, as represented by the Secretary of the Navy

An inorganic nanocrystal solar cell comprising a substrate, a layer of metal, a layer of CdTe, a layer of CdSe, and a layer of transparent conductor. An inorganic nanocrystal solar cell comprising a transparent conductive substrate, a layer of CdSe, a layer of CdTe, and a Au contact. A method of spray deposition for inorganic nanocrystal solar cells comprising subjecting a first solution of CdTe or CdSe nanocrystals to ligand exchange with a small coordinating molecule, diluting the first solution in solvent to form a second solution, applying the second solution to a substrate, drying the substrate, dipping the substrate in a solution in MeOH of a compound that promotes sintering, washing the substrate with iPrOH, drying the substrate with N, and heating and forming a film on the substrate. 1. An inorganic nanocrystal solar cell comprising:a transparent conductive substrate;a layer of CdSe on the transparent conductive substrate;a layer of CdTe on the layer of CdSe; anda Au contact on the layer of CdTe.2. The inorganic nanocrystal solar cell of wherein the surface roughness of the layer of CdTe is about 19 nm and the thickness is about 244 nm.3. An inorganic nanocrystal solar cell comprising:a solid non-porous substrate;a layer comprising one selected from the group consisting of conductive polymer, transparent conducting oxide, and metal;a layer of CdTe;a layer of CdSe; anda layer of transparent conductor.4. The inorganic nanocrystal solar cell of wherein the surface roughness of the layer of CdTe is about 19 nm and the thickness is about 244 nm.5. The inorganic nanocrystal solar cell of wherein the layer of metal comprises a noble metal.6. The inorganic nanocrystal solar cell of wherein the layer of metal comprises one selected from the group consisting of Au claim 4 , Pt claim 4 , and Ag.7. The inorganic nanocrystal solar cell of wherein the layer of transparent conductor is one selected from the group consisting of carbon nanotubes claim 4 , metal nanowires ...

Подробнее
Номер записи: 3
28-10-2021 дата публикации

Cu2-xS/PbS Core/Shell Nanocrystals

Номер: US20210332291A1
Автор: Chase T. Ellis, Janice E. Boercker, Joseph G. Tischler, Michael H. Stewart, Patrick Y. Yee, Paul D. Cunningham, Rhonda M. Stroud, Sarah F. Brittman, Steven C. Erwin
Принадлежит: US Department of Navy

A process for synthesizing Cu2-xS/PbS core/shell nanocrystals. Pb-oleate is mixed with 1-octadecene and heated to 60° C. Cu2-xS core solution and bis(trimethylsilyl)sulfide stock solution are added and the mixture is stirred at 60° C. for 6 minutes to form the PbS shell around the Cu2-xS nanocrystal cores. The flask is cooled and acetonitrile and toluene is added and the mixture is centrifuged to precipitate and remove the Cu2-xS/PbS core/shell nanocrystals from the reaction mixture. The reaction also produces homogeneously nucleated PbS nanocrystals, which are removed from the Cu2-xS/PbS core/shell reaction mixture via size-selective precipitation. By tailoring the amounts of Pb-oleate and bis(trimethylsilyl)sulfide stock solution in the reaction vessel, while maintaining their molar ratio of 1.5:1 and the number of Cu2-xS cores in the reaction, Cu2-xS/PbS core/shell nanocrystals having a predetermined shell thickness of PbS, and thus a predetermined level of chemical stability, can be obtained.

Подробнее
Номер записи: 4
12-11-2015 дата публикации

Multijunction Solar Cells Lattice Matched to InP Using Sb-Containing Alloys

Номер: US20150325720A1
Автор: Cory D. Cress, Igor Vurgaftman, Jerry R. Meyer, Jessica Adams, Joseph G. Tischler, Joshua Abell, Maria Gonzalez, Matthew P. Lumb, Michael K. YAKES, Ngai Chan, Nicholas Ekins-Daukes, Paul Stavrinou, Phillip Jenkins, Robert J. Walters
Принадлежит: US Department of Navy

A multijunction (MJ) solar cell grown on an InP substrate using materials that are lattice-matched to InP. In an exemplary three-junction embodiment, the top cell is formed from In 1-x Al x As 1-y Sb y (with x and y adjusted so as to achieve lattice-matching with InP, hereafter referred to as InAlAsSb), the middle cell from In 1-a-b Ga a Al b As (with a and b adjusted so as to achieve lattice-matching with InP, hereafter referred to as InGaAlAs), and the bottom cell also from InGaAlAs, but with a much lower Al composition, which in some embodiments can be zero so that the material is InGaAs. Tunnel junctions (TJs) connect the junctions and allow photo-generated current to flow. In an exemplary embodiment, an InAlAsSb TJ connects the first and second junctions, while an InGaAlAs TJ connects the second and third junctions.

Подробнее
Номер записи: 5
22-08-2023 дата публикации

Core/shell nanocrystals with copper sulfide cores and lead sulfide shells

Номер: US11732186B2
Автор: Chase T. Ellis, Janice E. Boercker, Joseph G. Tischler, Michael H. Stewart, Patrick Y. Yee, Paul D. Cunningham, Rhonda M. Stroud, Sarah F. Brittman, Steven C. Erwin
Принадлежит: US Department of Navy

A process for synthesizing Cu2-xS/PbS core/shell nanocrystals. Pb-oleate is mixed with 1-octadecene and heated to 60° C. Cu2-xS core solution and bis(trimethylsilyl)sulfide stock solution are added and the mixture is stirred at 60° C. for 6 minutes to form the PbS shell around the Cu2-xS nanocrystal cores. The flask is cooled and acetonitrile and toluene is added and the mixture is centrifuged to precipitate and remove the Cu2-xS/PbS core/shell nanocrystals from the reaction mixture. The reaction also produces homogeneously nucleated PbS nanocrystals, which are removed from the Cu2-xS/PbS core/shell reaction mixture via size-selective precipitation. By tailoring the amounts of Pb-oleate and bis(trimethylsilyl)sulfide stock solution in the reaction vessel, while maintaining their molar ratio of 1.5:1 and the number of Cu2-xS cores in the reaction, Cu2-xS/PbS core/shell nanocrystals having a predetermined shell thickness of PbS, and thus a predetermined level of chemical stability, can be obtained.

Подробнее
Номер записи: 6
02-12-2021 дата публикации

Cu2-xs/pbs core/shell nanocrystals

Номер: WO2021216941A3
Автор: Chase T. Ellis, Janice E. Boercker, Joseph G. Tischler, Michael H. Stewart, Patrick Y. Yee, Paul D. Cunningham, Rhonda M. Stroud, Sarah F. Brittman, Steven C. Erwin
Принадлежит: The Government of the United States of America, as represented by the Secretary of the Navy

A process for synthesizing Cu2-xS/PbS core/shell nanocrystals. Pb-oleate is mixed with 1-octadecene and heated to 60 °C. Cu 2-x S core solution and bis(trimethylsilyl)sulfide stock solution are added and the mixture is stirred at 60 °C for 6 minutes to form the PbS shell around the Cu 2-x S nanocrystal cores. The flask is cooled and acetonitrile and toluene is added and the mixture is centrifuged to precipitate and remove the Cu 2-x S/PbS core/shell nanocrystals from the reaction mixture. The reaction also produces homogeneously nucleated PbS nanocrystals, which are removed from the Cu2-xS/PbS core/shell reaction mixture via size-selective precipitation. By tailoring the amounts of Pb-oleate and bis(trimethylsilyl)sulfide stock solution in the reaction vessel, while maintaining their molar ratio of 1.5:1 and the number of Cu 2-x S cores in the reaction, Cu 2-x S/PbS core/shell nanocrystals having a predetermined shell thickness of PbS, and thus a predetermined level of chemical stability, can be obtained.

Подробнее
Номер записи: 7
27-07-2023 дата публикации

Enhanced Infrared Photodiodes Based on PbS/PbClx Core/Shell Nanocrystals

Номер: US20230238465A1
Автор: Adam E. Colbert, Diogenes Placencia, Edward H. Aifer, Erin L. RATCLIFF, Janice E. Boercker, Joseph G. Tischler
Принадлежит: US Department of Navy

Photodiodes configured to convert incident photons in the short-wave infrared (SWIR) to electric current, where the photodiodes have a PbS/PbCl x core/shell nanocrystal absorber layer. The PbCl x shell in the PbS/PbCl x nanocrystals provide native passivation in the ( 100 ) crystal facets and enable removal of pre-device processing ligands and ligand exchange on the ( 111 ) crystal facets of the PbS/PbCl x nanocrystals such that the photodiode exhibits reduced current densities under reverse bias and greater infrared photoresponse, providing improved device performance as compared to photodiodes having absorber layers formed from PbS core nanocrystals alone.

Подробнее
Номер записи: 8
27-02-2018 дата публикации

Spray deposition method for inorganic nanocrystal solar cells

Номер: US09905712B2
Автор: Edward E Foos, Joseph G. Tischler, Woojun Yoon
Принадлежит: US Department of Navy

A method of spray deposition for inorganic nanocrystal solar cells comprising subjecting a first solution of CdTe or CdSe nanocrystals to ligand exchange with a small coordinating molecule, diluting the first solution in solvent to form a second solution, applying the second solution to a substrate, drying the substrate, dipping the substrate in a solution in MeOH of a compound that promotes sintering, washing the substrate with iPrOH, drying the substrate with N 2 , and heating and forming a film on the substrate. An inorganic nanocrystal solar cell comprising a substrate, a layer of metal, a layer of CdTe, a layer of CdSe, and a layer of transparent conductor. An inorganic nanocrystal solar cell comprising a transparent conductive substrate, a layer of CdSe, a layer of CdTe, and a Au contact.

Подробнее
Номер записи: 9