Flexible Kesterite Photovoltaic Device on Ceramic Substrate
AssigneesInternational Business Machines Corporation, Enrg, Inc.
InventorsJohn A. Olenick, Teodor K. Todorov
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Abstract
Kesterite-based photovoltaic devices formed on flexible ceramic substrates are provided. In one aspect, a method of forming a photovoltaic device includes the steps of: forming a back contact on a flexible ceramic substrate; forming a kesterite absorber layer on a side of the back contact opposite the flexible ceramic substrate; annealing the kesterite absorber layer; forming a buffer layer on a side of the kesterite absorber layer opposite the back contact; and forming a transparent front contact on a side of the buffer layer opposite the kesterite absorber layer. A roll-to-roll-based method of forming a photovoltaic device and a photovoltaic device are also provided.
Claims20
A photovoltaic device, comprising:
- a flexible ceramic substrate;
- a back contact on the flexible ceramic substrate;
- a kesterite absorber layer on a side of the back contact opposite the flexible ceramic substrate;
- a buffer layer on a side of the kesterite absorber layer opposite the back contact;
- and
- a transparent front contact on a side of the buffer layer opposite the kesterite absorber layer.
A photovoltaic device, comprising:
- a flexible ceramic substrate comprising zirconium oxide, yttrium-stabilized zirconium oxide, aluminum oxide, or titanium dioxide;
- a back contact on the flexible ceramic substrate;
- a kesterite absorber layer on a side of the back contact opposite the flexible ceramic substrate;
- a buffer layer on a side of the kesterite absorber layer opposite the back contact;
- and
- a transparent front contact on a side of the buffer layer opposite the kesterite absorber layer.
Dependencies are inferred from the claim text.