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At absolute zero temperature, which level is above the Fermi energy level in the case of donors?

(a) Donor energy level

(b) Acceptor energy level

(c) Conduction Band

(d) Valence Band

I had been asked this question in homework.

The question is from Donor and Acceptor impurities topic in chapter Conduction in Semiconductors of Electronic Devices & Circuits

1 Answer

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Correct answer is (c) Conduction Band

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

Thus, EF>ED

So, only conduction band lies above the Fermi energy level.

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