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Solar Thin Film Photovoltaics
Search All Applications in Solar Thin Film Photovoltaics
Application US20180097130
Published 2018-04-05
Chalcogen Back Surface Field Layer
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.
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- 1. A method of forming a photovoltaic device, the method comprising:
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, wherein the passivating layer comprises a material selected from the group consisting of: pure selenium, pure sulfur, and pure tellurium; and forming a high work function back contact on the passivating layer.
- 10. (canceled)
- 17-22. (canceled)
