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NANOCRYSTALLINE COPPER INDIUM DISELENIDE (CIS) AND INK-BASED ALLOYS ABSORBER LAYERS FOR SOLAR CELLS

United States Patent Application

20130118585
A1
View the Complete Application at the US Patent & Trademark Office
Embodiments of the invention are to a copper indium diselenide (CIS) comprising nanoparticle where the nanoparticle includes a CIS phase and a second phase comprising a copper selenide. The CIS comprising nanoparticles are free of surfactants or binding agents, display a narrow size distribution and are 30 to 500 nm in cross section. In an embodiment of the invention, the CIS comprising nanoparticles are combined with a solvent to form an ink. In another embodiment of the invention, the ink can be used for screen or ink-jet printing a precursor layer that can be annealed to a CIS comprising absorber layer for a photovoltaic device.
Anderson, Timothy James (Gainesville, FL), Park, Chinho (Seoul, KR), Krishnan, Rangarajan (Hillsboro, OR), Farva, Umme (Sitapur, IN)
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. (GAINESVILLE FL)
13/ 805,804
June 22, 2011
[0002] The subject invention was made with government support under the Department of Energy, Contract No. DE-FG36-08GO18069. The government has certain rights to this invention.