Tutunjian & Bitetto, P.C.
Controllable indium doping for high efficiency CZTS thin-film solar cells
A photovoltaic device includes a first contact layer formed on a substrate. An absorber layer includes Cu—Zn—Sn—S(Se) (CZTSSe) on the first contact layer. A buffer layer is formed in contact with the absorber layer. Metal dopants are dispersed in a junction region between the absorber layer and the buffer layer. The metal dopants have a valence between the absorber layer and the buffer layer to increase junction potential. A transparent conductive contact layer is formed over the buffer layer.
International Business Machines Corporation
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Talia S. Jeehwan Teodor K. Yun Seog
Gershon Kim Todorov Lee