Distinguish between an intrinsic semiconductor and p-type semiconductor. Give reason, why, a p-type semiconductor is electrically neutral, although nh>>ne?

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

An intrinsic semiconductor is a pure semiconductor where as a p-type semiconductor is a semiconductor doped with trivalent impurity atoms like boron or gallium. An intrinsic semiconductor has same number of holes and electrons while in a p-type semiconductor the number of holes is greater than the number of electrons. Each hole is associated with a nearby negative-charged dopant ion, and thus semiconductor remains electrically neutral as a whole.

Answered by  | 4th Jun, 2014, 03:23: PM