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Jerry M Olson, Sarah R Kurtz, Daniel J Friedman: Multi-junction, monolithic solar cell using low-band-gap materials lattice matched to GaAs or Ge. Midwest Research Institute, Paul J White, August 28, 2001: US06281426 (108 worldwide citation)

A multi-junction, monolithic, photovoltaic solar cell device is provided for converting solar radiation to photocurrent and photovoltage with improved efficiency. The solar cell device comprises a plurality of semiconductor cells, i.e., active p/n junctions, connected in tandem and deposited on a su ...


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Douglas L Schulz, Calvin J Curtis, David S Ginley: Solution synthesis of mixed-metal chalcogenide nanoparticles and spray deposition of precursor films. Midwest Research Institute, Ken Richardson, Paul J White, October 3, 2000: US06126740 (104 worldwide citation)

A colloidal suspension comprising metal chalcogenide nanoparticles and a volatile capping agent. The colloidal suspension is made by reacting a metal salt with a chalcogenide salt in an organic solvent to precipitate a metal chalcogenide, recovering the metal chalcogenide, and admixing the metal cha ...


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Kannan Ramanathan, Falah S Hasoon, Sarah E Asher, James Dolan, James C Keane: solar cells prepared by vapor phase Zn doping, ZnO/Cu(InGa)Se. Midwest Research Institute, Paul J White, February 20, 2007: US07179677 (87 worldwide citation)

A process for making a thin film ZnO/Cu(InGa)Se2 solar cell without depositing a buffer layer and by Zn doping from a vapor phase, comprising: depositing Cu(InGa)Se2 layer on a metal back contact deposited on a glass substrate; heating the Cu(InGa)Se2 layer on the metal back contact on the glass sub ...


4
Markus E Beck, Rommel Noufi: Processing approach towards the formation of thin-film Cu(In,Ga)Se2. Midwest Research Institute, Paul J White, February 11, 2003: US06518086 (77 worldwide citation)

A two-stage method of producing thin-films of group IB-IIIA-VIA on a substrate for semiconductor device applications includes a first stage of depositing an amorphous group IB-IIIA-VIA precursor onto an unheated substrate, wherein the precursor contains all of the group IB and group IIIA constituent ...


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Quang A Nguyen, Fred A Keller, Melvin P Tucker: Ethanol production with dilute acid hydrolysis using partially dried lignocellulosics. Midwest Research Institute, Paul J White, December 9, 2003: US06660506 (73 worldwide citation)

A process of converting lignocellulosic biomass to ethanol, comprising hydrolyzing lignocellulosic materials by subjecting dried lignocellulosic material in a reactor to a catalyst comprised of a dilute solution of a strong acid and a metal salt to lower the activation energy (i.e., the temperature) ...


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Se Hee Lee, C Edwin Tracy, Hyeonsik M Cheong: Method for improving the durability of ion insertion materials. Midwest Research Institute, Paul J White, July 16, 2002: US06420071 (63 worldwide citation)

The invention provides a method of protecting an ion insertion material from the degradative effects of a liquid or gel-type electrolyte material by disposing a protective, solid ion conducting, electrically insulating, layer between the ion insertion layer and the liquid or gel-type electrolyte mat ...


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John R Tuttle, Rommel Noufi, Falah S Hasoon: Thin-film solar cell fabricated on a flexible metallic substrate. Midwest Research Institute, Paul J White, May 30, 2006: US07053294 (61 worldwide citation)

A thin-film solar cell (10) is provided. The thin-film solar cell (10) comprises a flexible metallic substrate (12) having a first surface and a second surface. A back metal contact layer (16) is deposited on the first surface of the flexible metallic substrate (12). A semiconductor absorber layer ( ...


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Robert W Torget: Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics. Midwest Research Institute, Paul J White, May 8, 2001: US06228177 (61 worldwide citation)

A multi-function process for hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components comprising extractives and proteins; a portion of a solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said bioma ...


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Xuanzhi Wu, Peter Sheldon: Process for fabricating polycrystalline semiconductor thin-film solar cells, and cells produced thereby. Midwest Research Institute, Ken Richardson, Paul J White, October 24, 2000: US06137048 (60 worldwide citation)

A novel, simplified method for fabricating a thin-film semiconductor heterojunction photovoltaic device includes initial steps of depositing a layer of cadmium stannate and a layer of zinc stannate on a transparent substrate, both by radio frequency sputtering at ambient temperature, followed by the ...


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