Solar cell

摘要

A solar cell includes a first semiconductor region (1) of a P type, a second semiconductor region (2) of an N type made in contact with the first semiconductor region (1) so as to form a PN junction, and a third semiconductor region (4) of a P ©& type made in contact with both the first and second semiconductor regions (1, 2) and having a higher impurity concentration than that of the first semiconductor region (1).