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Solution synthesis of mixed-metal chalcogenide nanoparticles and spray deposition of precursor films

United States Patent

6,126,740
October 3, 2000
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
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 chalcogenide with a volatile capping agent. The colloidal suspension is spray deposited onto a substrate to produce a semiconductor precursor film which is substantially free of impurities.
Schulz; Douglas L. (Denver, CO), Curtis; Calvin J. (Lakewood, CO), Ginley; David S. (Evergreen, CO)
Midwest Research Institute (Kansas City, MO)
09/ 014,326
January 27, 1998
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.