Method of making photovoltaic cell

United States Patent

June 20, 2017
View the Complete Patent at the US Patent & Trademark Office
Enhanced Thin Film Solar
A photovoltaic solar cell comprises a nano-patterned substrate layer. A plurality of nano-windows are etched into an intermediate substrate layer to form the nano-patterned substrate layer. The nano-patterned substrate layer is positioned between an n-type semiconductor layer composed of an n-type semiconductor material and a p-type semiconductor layer composed of a p-type semiconductor material. Semiconductor material accumulates in the plurality of nano-windows, causing a plurality of heterojunctions to form between the n-type semiconductor layer and the p-type semiconductor layer.
September 14, 2016
H01L 31/18 (20060101); H01L 31/073 (20120101); H01L 31/065 (20120101); H01L 31/06 (20120101); H01L 31/0352 (20060101); H01L 31/0725 (20120101);
STATEMENT OF GOVERNMENT INTEREST This invention was developed under Contract DE AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.