Importance

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Abstract

Disclosed herein are a paste composition capable of, even when the thickness of a silicon semiconductor substrate (1) is reduced, satisfactorily achieving a desired BSF effect and suppressing the deformation (bow) of the silicon semiconductor substrate (1) occurring after the firing of the paste composition without reducing the mechanical strength of an obtained electrode (8) and the adhesion of the electrode (8) to the silicon semiconductor substrate (1), an electrode (8) formed using the paste composition, and a solar cell element including the electrode (8). The paste composition is used for forming an electrode on a silicon semiconductor substrate (1), and contains aluminum powder, an organic vehicle, and whisker insoluble or hardly-soluble in the organic vehicle, the whisker being previously mixed with the aluminum powder and the organic vehicle. The solar cell element includes an electrode (8) formed by applying a paste composition having the above-described characteristics onto the silicon semiconductor substrate (1) and then firing the paste composition.

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First Claim