Question

Fermi energy level for $p-type$ extrinsic semiconductors lies

• A. At middle of the band gap
• B. Close to conduction band
• C. Close to valence band
• D. None of the above

Answer 1

The correct option is C Close to valence band

In case of a p-type semiconductor, the number of holes in valence band is grater then number of electrons in conduction band. hence, the probability of occupation of energy levels by the holes in valence band is greater than probability of occupation of energy levels by electrons in conduction band. This probability of occupation of energy levels is represented in terms of Fermi level.

$\therefore$ female level in p-type semiconductor lies does to valence band.