| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a solar battery which ensures small environmental load and shows higher conversion efficiency in the solar battery using a compound semiconductor including the group Ib element, group IIIb element and group VIb element as the p-type semiconductor layer. <P>SOLUTION: The solar battery (1) comprises a first semiconductor layer (12) using a p-type semiconductor and a second semiconductor layer (13) using an n-type semiconductor. In this solar battery (1), the first semiconductor layer (12) and the second semiconductor layer (13) are coupled with the pn-joining method, the first semiconductor layer (12) includes the group Ib element, group IIIb element, and group VIb element; and the second semiconductor layer (13) is formed of three or more kinds of elements selected from a group including the elements of the third period and fourth period of the periodic table. Moreover, the lattice mismatching coefficient (%) calculated by ¾L<SB>1</SB>-L<SB>2</SB>¾/ä(L<SB>1</SB>+L<SB>2</SB>)/2}×100 is 3% or less when the lattice constant of the first semiconductor layer (12) is L<SB>1</SB>and the lattice constant of the second semiconductor layer (13) is L<SB>2</SB>. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
