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Chalcogen Back Surface Field Layer

United States Patent Application

20180097130
A1
View the Complete Application at the US Patent & Trademark Office
Kesterite photovoltaic devices having a back surface field layer are provided. In one aspect, a method of forming a photovoltaic device includes: forming a complete photovoltaic device having a substrate, an electrically conductive layer on the substrate, an absorber layer on the electrically conductive layer, a buffer layer on the absorber layer, and a transparent front contact on the buffer layer; removing the substrate and the electrically conductive layer from the complete photovoltaic device to expose a backside surface of the absorber layer; forming a passivating layer on the backside surface of the absorber layer; and forming a high work function back contact on the passivating layer. A photovoltaic device having a passivating layer is also provided.
Antunez, Priscilla D. (Tarrytown, NY), Ek, Bruce A. (Pelham Manor, NY), Haight, Richard A. (Mahopac, NY), Mankad, Ravin (Mumbai, IN), Singh, Saurabh (Yonkers, NY), Todorov, Teodor K. (Yorktown Heights, NY)
15/ 281,789
September 30, 2016
STATEMENT OF GOVERNMENT RIGHTS [0001] This invention was made with Government support under Contract number DE-EE0006334 awarded by Department of Energy. The Government has certain rights in this invention.