Question

The level formed due to impurity atom in the forbidden energy gap, very near to the valence band in a $p$-type semiconductor is called

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

Answer 1

The correct option is A Acceptor level

In $p-$type semiconductor, the trivalent impurity atoms are introduced to an intrinsic semiconductor.

Thus, a hole is created due to vacancy in the covalent bond formed by each impurity atom.

A hole has a tendency to accept an electron from a neighbouring atom.

Therefore, the impurity is an acceptor impurity and all the energy level corresponding to acceptor atoms is called acceptor level.

Hence, option $\left(A\right)$ is correct.