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US 8,940,996 B2Granted
Substrate for photovoltaic cell
AssigneeSaint-Gobain Glass France
InventorsOctavio Cintora, Guillaume Fourty
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Abstract
The object of the invention is a substrate for photovoltaic cell comprising at least one sheet of float glass provided on a face of at least one electrode, characterized in that said glass has a chemical composition comprising the following constituents, in a weight content that varies within the limits defined below: SiO2 69-75% Al2O3 0-3% CaO + MgO 11-16.2% MgO 0-6.5% Na2O 9-12.4% K2O 0-1.5%.
Claims10
A photovoltaic cell, comprising a semiconductor device comprising:
- at least one electrode;
- a substrate, comprising at least one sheet of float glass provided on a face of the at least one electrode, wherein the float glass comprises, by weight content:
- from 69-75% of SiO2;
- from 0-3% of Al2O3;
- from 11-16.2% of CaO + MgO;
- from 0-6.5% of MgO;
- from 9-12.4% of Na2O;
- from 0-1.5% of K2O;
- and
- from 0.08 to 2% of iron oxide;
- and
- at least one thin layer of a material having photovoltaic properties deposited on the at least one substrate, wherein the material having photovoltaic properties is a compound of Cu(In,Ga)Se2 type,
- wherein the substrate is a back face substrate of the photovoltaic cell.
10 more elements
Dependencies are inferred from the claim text.