Question

What is the name of the level formed due to impurity atom in $p$-type in the forbidden gap?

• A. Donor level
• B. Acceptor level
• C. Conduction level
• D. Forbidden level

Answer 1

Answer: (B)

Acceptor level

Answer 2

In $p$-type doping, the impurities have left holes in the atomic structure which tend to attract and hold free electrons; This pulls the fermi level down until it gets close to the valence bond. Hence, name of level formed due to impurity atom is $p$-type in the forbidden gap is acceptor level.