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Method of making photovoltaic cell

United States Patent

9,685,580
June 20, 2017
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
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)
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
15/ 265,374
20170005222
September 14, 2016
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.