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US 2013/0095296 A1Published application
Photovoltaic Substrate
AssigneeIntegrated Photovoltaic, Inc.
InventorsSharone Zehavi, Raanan Y. Zehavi
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Abstract
A composite substrate comprising a graphitic layer and a semiconductor layer for a photovoltaic device is disclosed.
Claims15
A composite substrate for a photovoltaic device comprising:
- first layer composed substantially of carbon based material;
- second layer composed substantially of silicon;
- and
- third layer, substantially continuous, of SiC separating the first layer from the second layer.
1 more element
A method for forming a substantially continuous layer of silicon carbide between a carbon based substrate and a silicon layer comprising the steps;
- selecting a carbon based substrate;
- depositing a first layer consisting of carbon and silicon of a first carbon/silicon ratio in an atmospheric pressure chemical vapor deposition reactor;
- depositing a second layer consisting of carbon and silicon of a second carbon/silicon ratio in an atmospheric pressure chemical vapor deposition reactor;
- and
- oxidizing the second layer such that the mean surface roughness after oxidation is less than ±20 microns.
2 more elements
A method for forming a substantially continuous layer of silicon carbide between a carbon based substrate and a silicon layer comprising the steps;
- selecting a carbon based substrate;
- depositing a first layer consisting of carbon and silicon of a first carbon/silicon ratio;
- depositing the silicon layer consisting substantially of silicon;
- and
- recrystallizing the second layer such that the mean lateral dimension of the recrystallized grains is greater than about 5 mm.
2 more elements
Dependencies are inferred from the claim text.