In a solar cell comprising a semiconductor substrate 11 and a i-type amorphous semiconductor layer 12 formed on a back surface of the semiconductor substrate 11, the i-type amorphous semiconductor layer 12 includes an exposed portion 12A exposed in a planer view, and a covered portion 12B covered with each of the p-type semiconductor layer 13 and the n-type semiconductor layer 14. A thickness T1 of the exposed portion 12A is less than a thickness T2 of the covered portion 12B.