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At absolute zero temperature, which level is below the Fermi energy level in the case of acceptors?

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At absolute zero temperature, which level is below the Fermi energy level in the case of acceptors?

(a) Donor energy level

(b) Valence Band

(c) Conduction band

(d) Acceptor energy level

The question was asked in exam.

My doubt is from Donor and Acceptor impurities topic in section Conduction in Semiconductors of Electronic Devices & Circuits

1 Answer

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Best answer
Correct answer is (b) Valence Band

The best explanation: At T=0 K, the tem exp(-∞)=0 in the expression of

So, only valence band lies below the Fermi energy level of the acceptors.

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