A diindenothiophene derivative of the following formula (1) is disclosed:
wherein each of G
1
, G
2
, G
3
and G
4
is independently an unsubstituted or substituted C
6
-C
40
-aromatic group or a C
1
-C
40
-aliphatic group; A is an electron-withdrawing group; and D is an electron-donating group. The inventive diindenothiophene derivatives can be used in a dye-sensitized solar cell.