Question

Holes are the majority carries in Intrinsic Semiconductors.

(a) True

(b) False

This question was addressed to me in an international level competition.

My question is taken from Classification of Semiconductors in division Semiconductors of Engineering Physics II

Answer 1

Right option is (b) False

The explanation: A pure semiconductor is called an intrinsic semiconductor. Hence, in this case, the number of electrons and holes are same, as the electron that moves out of its position leaves a hole behind. Hence, the concentration of holes and electrons is the same in an intrinsic semiconductor.