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Process for preparing group Ib-IIIa-VIa semiconducting films

United States Patent

*** EXPIRED ***
October 7, 1997
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Methods are provided for the production of supported monophasic group I-III-VI semiconductor films. In the subject methods, a substrate is coated with group I and III elements and then contacted with a reactive group VI element containing atmosphere under conditions sufficient to produce a substrate coated with a composite of at least two different group I-III-IV alloys. The resultant composite coated substrate is then annealed in an inert atmosphere under conditions sufficient to convert the composite coating to a monophasic group I-III-VI semiconductor film. The resultant supported semiconductor films find use in photovoltaic applications, particularly as absorber layers in solar cells.
Birkmire; Robert W. (Churchville, MD), Schultz; Jerold M. (Newark, DE), Marudachalam; Matheswaran (Newark, DE), Hichri; Habib (Newark, DE)
University of Delaware (Newark, DE)
08/ 564,957
November 30, 1995
ACKNOWLEDGMENT OF GOVERNMENT RIGHTS This invention was made with Government support under subcontract no. XAV-3-13170-01 awarded by the National Renewable Energy Laboratory under contract no. DE-AC36-83CH10093 awarded by the Department of Energy. The Government has certain rights in this invention.