Are there any semiconductors other than silicon that can be used in photovoltaic cells?

Question

Are there any semiconductors other than silicon that can be used in photovoltaic cells?

Answer 1

germanium is another possibility. but, Silicon gives more potential difference than germanium. a single silicon cell gives 0.7V drop, while that of germanium gives 0.3V drop. the electrical characteristics of silicon r better than germanium's. also, silicon is abundantly available and easily extractable.

Answer 2

Germanium can be used as well.  Not sure which one works more efficiently in photovoltaics, but Silicon is good because its one of the most plentiful elements in the earth's crust.