Question

Which of the following is an example of a direct band gap intrinsic semiconductor?

• A. Silicon
• B. Germanium
• C. Gallium Arsenide
• D. none of these

Answer 1

The correct option is C Gallium Arsenide

Direct Band gap: Defined when maximum energy in the valence band and minimum energy in the conduction band occurs at the same values of the crystal momentum i.e, a direct transition of electrons from valence to conduction band takes place.

Gallium arsenide is an example of direct band gap semiconductor.