The difference between donor and acceptor atoms in a doped semiconductor is that
A) the donor energy level lies halfway between the valence band and the acceptor level.
B) the donor energy level lies near the valence band and the acceptor energy level lies near the conduction band.
C) donor energy levels cannot exist unless acceptor energy levels are present.
D) the donor energy level lies near the conduction band and the acceptor energy level lies near the valence band.
E) the acceptor energy level lies halfway between the conduction band and the donor energy level.

Question

Quizplus · Accepted Answer

The donor and acceptor atoms in a doped semiconductor have different energy levels. The donor atom has an extra electron that can be excited to a higher energy level, which is located near the conduction band. The acceptor atom is missing one electron, creating a “hole” that can be filled by an electron from the valence band. This missing electron creates an energy level near the valence band. Therefore, the donor energy level lies near the conduction band and the acceptor energy level lies near the valence band. Choice D is the only option that correctly describes this difference.

The Difference Between Donor and Acceptor Atoms in a Doped