question_answer

Which one of the following is NOT a correct statement about semi-conductors?

A) The electrons and holes have different mobilities in a semi-conductor

B) In an n-type semi-conductor, the Fermi level lies closer to the conduction band edge

C) Silicon is a direct band gap semi-conductor

D) Silicon has diamond structure

Correct Answer: C

Solution :

[c] Silicon is an indirect-band gap semi- conductor.