Q. The $n$-type semiconductors are obtained, when germanium is doped with
A) Arsenic
B) Phosphorus
C) Antimony
D) Any one of these
Explanation
(d) When a pure (intrinsic) semiconductor such as germanium is doped with pentavalent impurity, then $n$-type semiconductor is obtained. Arsenic, phosphorus and antimony all are pentavalent impurity, so the correct option is (d).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.