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US 2012/0067424 A1Published application
Annealing processes for photovoltaics
AssigneePrecursor Energetics, Inc.
InventorsKyle L. Fujdala, Zhongliang Zhu, David Padowitz, Paul R. Markoff Johnson, Wayne A. Chomitz
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Abstract
Processes for making a solar cell by depositing various layers of components on a substrate and converting the components into a thin film photovoltaic absorber material. Processes of this disclosure can be used to control the stoichiometry of metal atoms in making a solar cell for targeting a particular concentration and providing a gradient of metal atom concentration. A selenium layer can be used in annealing a thin film photovoltaic absorber material.
Claims20
A process for making a thin film solar cell on a substrate comprising:
- (a) providing a thin film coated on a back contact on a first substrate;
- (b) depositing a selenium layer onto a second substrate;
- (c) arranging the first and second substrates so that the thin film is parallel to, and facing the selenium layer, wherein the thin film and the selenium layer are spaced apart;
- and
- (d) heating the first and second substrates.
2 more elements
Dependencies are inferred from the claim text.