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US 9,691,917 B2Granted
Back contact having selenium blocking layer for photovoltaic devices such as copper-indium-diselenide solar cells
AssigneeGuardian Industries Corp.
InventorAlexey Krasnov
Life of this patent
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Abstract
A photovoltaic device (e.g., solar cell) includes: a front substrate (e.g., glass substrate); a semiconductor absorber film; a back contact including a first conductive layer of or including copper (Cu) and a second conductive layer of or including molybdenum (Mo); and a rear substrate (e.g., glass substrate). A selenium blocking layer is provided between at least the Cu inclusive layer and the Mo inclusive layer.
Claims8
A method of making a coated article for use in a photovoltaic device, the method comprising:
- providing a substrate;
- depositing a conductive layer comprising Cu over at least said substrate;
- depositing a selenium blocking layer on the substrate over at least the conductive layer comprising Cu, wherein the selenium blocking layer consists essentially of an oxide of copper which may optionally be nitrided;
- depositing a conductive layer comprising Mo on the substrate over at least the conductive layer comprising Cu and the selenium blocking layer;
- and
- forming a CIGS absorber film over at least said conductive layer comprising Mo.
3 more elements
A method of making a coated article for use in a photovoltaic device, the method comprising:
- having a glass substrate;
- depositing a conductive layer comprising Cu over at least said glass substrate;
- depositing a selenium blocking layer on the substrate over at least the conductive layer comprising Cu, wherein the selenium blocking layer consists essentially of an oxide of copper which may optionally be nitrided;
- depositing a conductive layer comprising Mo on the substrate over at least the conductive layer comprising Cu and the selenium blocking layer;
- and
- wherein the coated article is configured so that a CIGS absorber film can be formed over at least said conductive layer comprising Mo.
3 more elements
Dependencies are inferred from the claim text.