Question

What is the optimum band gap energy for a material to be considered as a semiconductor?

• A. greater than $6eV$
• B. less than $6eV$
• C. $0eV$
• D. $0.5-3eV$

Answer 1

The correct option is D $0.5-3eV$

Semiconductor materials have low but finite band gap energy, due to which there is an easy jump of electron from valence band to conduction band upon provision of external thermal energy.

The typical range of band gap energy for a semiconductor material is $0.5eV-3eV$.