Paste composition for solar cell, method for producing same, and solar cell
AssigneesSharp Kabushiki Kaisha, Noritake Co., Limited
InventorsKosuke Ochi, Masao Yamagishi, Satoshi Tanaka, Yoshihiro Ohishi
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Abstract
A paste composition for forming a back surface electrode of a solar cell 10 provided by the present invention contains, as solid matter, an aluminum powder, a glass powder, and a composite powder composed of a granular composite material of titanium oxide and an organic or inorganic compound containing silicon. When the total amount of the composite powder, the aluminum powder, and the glass powder is 100% by mass, the composite powder is contained in a ratio of 0.45% by mass or more and 1% by mass or less.
Claims7
A paste composition for forming a back surface electrode of a solar cell,
- the composition comprising:
- an aluminum powder;
- a glass powder;
- and
- a composite powder composed of a granular composite material of titanium oxide and an organic or inorganic compound containing silicon as solid matter, wherein
- when a total amount of the composite powder, the aluminum powder, and the glass powder is 100% by mass, the composite powder is contained in a ratio of 0.45% by mass or more and 1% by mass or less.
A method for producing a solar cell provided with an aluminum electrode as a back surface electrode,
- the method comprising:
- preparing a paste composition which contains, as solid matter, an aluminum powder, a glass powder, and a composite powder composed of a granular composite material of titanium oxide and an organic or inorganic compound containing silicon, and which contains the composite powder in a ratio of 0.45% by mass or more and 1% by mass or less when a total amount of the composite powder, the aluminum powder, and the glass powder is 100% by mass;
- providing on a substrate the paste composition;
- and
- firing the paste composition provided on the substrate and forming the back surface electrode on the substrate.
Dependencies are inferred from the claim text.