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METHOD OF MAKING PHOTOVOLTAIC CELL

United States Patent Application

*** PATENT GRANTED ***
20170005222
9,685,580
A1
View the Complete Application at the US Patent & Trademark Office
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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.
Cruz-Campa, Jose Luis (Waltham, MA), Zhou, Xiaowang (Livermore, CA), Zubia, David (El Paso, TX)
15/ 265,374
September 14, 2016
STATEMENT OF GOVERNMENT INTEREST [0002] 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.