The present invention, without increasing the resistance of the electrode, and an object thereof is to obtain a large solar cell mechanical strength.
Solar cell 10 according to the present invention includes a silicon substrate 3, the aluminum electrode 1 as a first electrode for current collection from the back surface of the silicon substrate 3, and the silver electrode 2 is a second electrode for taking out an output from the aluminum electrode 1 the equipped, aluminum first electrode has a notch 1b recessed formed on the back surface of the silicon substrate 3 from the opening 1a and the opening 1a in the direction parallel to the direction of the main stress in the silicon substrate 3 plane, silver electrode 2 is intended to be formed so as to cover at least the opening 1a and the notch 1b of the aluminum electrode 1.