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Photovoltaic devices comprising cadmium stannate transparent conducting films and method for making

United States Patent

5,922,142
July 13, 1999
View the Complete Patent at the US Patent & Trademark Office
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CdTe portfolio offers commercial ready high efficiency solar
A photovoltaic device having a substrate, a layer of Cd.sub.2 SnO.sub.4 disposed on said substrate as a front contact, a thin film comprising two or more layers of semiconductor materials disposed on said layer of Cd.sub.2 SnO.sub.4, and an electrically conductive film disposed on said thin film of semiconductor materials to form a rear electrical contact to said thin film. The device is formed by RF sputter coating a Cd.sub.2 SnO.sub.4 layer onto a substrate, depositing a thin film of semiconductor materials onto the layer of Cd.sub.2 SnO.sub.4, and depositing an electrically conductive film onto the thin film of semiconductor materials.
Wu; Xuanzhi (Golden, CO), Coutts; Timothy J. (Lakewood, CO), Sheldon; Peter (Lakewood, CO), Rose; Douglas H. (Golden, CO)
Midwest Research Institute (
08/ 746,798
November 18, 1996
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention under Contract No. DE-AC36-83CH10093 between the U.S. Department of Energy and the National Renewable Energy Laboratory, a Division of Midwest Research Institute.