Abstract: Provided are a paste composition making it possible to improve the adhesive property of a backside electrode and restrain an aluminum electrode layer from exfoliating, and a solar cell element having an electrode formed by use of this composition. The paste composition is a paste composition for forming an electrode (8) on a silicon semiconductor substrate (1) which comprises aluminum powder, an organic vehicle, and a tackifier. The solar cell element has the electrode (8) formed by painting a paste composition having the above-mentioned characteristic onto the silicon semiconductor substrate (1) and then firing the resultant.

Abstract: Provided are a paste composition making it possible to improve the adhesive property of a backside electrode and restrain an aluminum electrode layer from exfoliating, and a solar cell element having an electrode formed by use of this composition. The paste composition is a paste composition for forming an electrode (8) on a silicon semiconductor substrate (1) which comprises aluminum powder, an organic vehicle, and a tackifier. The solar cell element has the electrode (8) formed by painting a paste composition having the above-mentioned characteristic onto the silicon semiconductor substrate (1) and then firing the resultant.

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.