Q. When a solid with a band gap has a donor level just below its empty energy band, the solid is
A) An insulator
B) A conductor
C) $p$-type semiconductor
D) $n$-type semiconductor
Explanation
(d) In $n$-type semiconductor donor energy level lies just below the conduction band also called empty band of minimum energy.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.