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ZnS/Zn(O,OH)S-based buffer layer deposition for solar cells

United States Patent

November 3, 2009
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
The invention provides CBD ZnS/Zn(O,OH)S and spray deposited ZnS/Zn(O,OH)S buffer layers prepared from a solution of zinc salt, thiourea and ammonium hydroxide dissolved in a non-aqueous/aqueous solvent mixture or in 100% non-aqueous solvent. Non-aqueous solvents useful in the invention include methanol, isopropanol and triethyl-amine. One-step deposition procedures are described for CIS, CIGS and other solar cell devices.
Bhattacharya; Raghu N. (Littleton, CO)
Alliance for Sustainable Energy, LLC (Golden, CO)
10/ 592,963
April 2, 2004
GOVERNMENT INTEREST The United States Government has rights in this invention pursuant to contract DEAC36-99CH10093 between the United States Department of Energy and the National Renewable Energy Laboratory, a division of the Midwest Research Institute.