In an extrinsic n-type semiconductor, the free electrons donated by the impurity atoms occupy energy levels in (a) the conduction band. (b) the valance band. (c) the band gap and are close to conduction band. (d) the band gap and are close to valance band.

Answer: (c). Donor electrons of a pentavalent impurity occupy the donor level. The donor level lies in the band gap, close to the conduction band (about 0.01 to 0.05 eV below it). So the answer is (c).

In an extrinsic n-type semiconductor, the free electrons donated by… | MHT CET 2024 (15 May, Shift 1)

Q20MHT CET 2024 · 15 MAY · SHIFT 1Easy

Intrinsic & Extrinsic Semiconductors

In an extrinsic n-type semiconductor, the free electrons donated by the impurity atoms occupy energy levels in

Show answer and solution

Answer: (c)

Donor electrons of a pentavalent impurity occupy the donor level.
The donor level lies in the band gap, close to the conduction band (about $0.01$ to $0.05\text{ eV}$ below it).
So the answer is (c).

Report a mistake

Intrinsic & Extrinsic Semiconductors question from MHT CET 2024 (15 May, Shift 1)

More questions on Intrinsic & Extrinsic Semiconductors