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US 8,410,357 B2Granted
Back contact for thin film solar cells
AssigneeSolexant Corp.
InventorsPuthur D. Paulson, Craig Leidholm, Damoder Reddy, Charlie Hotz
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Abstract
Disclosed is a novel thin film photovoltaic device and a process of making. The device comprises an interface layer between the absorber layer and the electrode resulting in an improved back contact and improved device efficiency. The interface layer comprises a material comprising a Ma-(Group VIA)b compound, where M is a transition metal the Group VIA designates Te, Se and/or S.
Claims14
A photovoltaic device, comprising:
- a substrate,
- a back electrode layer,
- an absorber layer comprising CdTe, and
- an interface layer disposed between the back electrode layer and the absorber layer,
- wherein
- the interface layer comprises a first interface composition comprising MoxTey, where 0<x≦3 and 0<y≦4.
3 more elements
A photovoltaic device, comprising:
- a substrate,
- a back electrode layer,
- an absorber layer comprising CIGS and
- an interface layer disposed between the back electrode layer and the absorber layer,
- wherein
- the interface layer comprises a first interface composition comprising MoxTey, where 0<x≦3 and 0<y≦4.
3 more elements
Dependencies are inferred from the claim text.