Question

What do you mean by the tem ‘FREEZE-OUT’?

(a) All the electrons are frozen at room temperature

(b) None of the electrons are thermally elevated to the conduction band

(c) All the electrons are in the conduction band

(d) All the holes are in the valence band

I had been asked this question in an internship interview.

Question is from Donor and Acceptor impurities in division Conduction in Semiconductors of Electronic Devices & Circuits

Answer 1

Right option is (b) None of the electrons are thermally elevated to the conduction band

To explain: Freeze out means none of the electrons are transmitted to the conduction band.