Question

In a intrinsic semiconductor the electron hole pairs are created at

Answer 1

Answer:

For an intrinsic semiconductor, the concentration of electrons in the conduction band is equal to the concentration of holes in the valence band. The doping process can greatly alter the electrical characteristics of the semiconductor. This doped semiconductor is called an extrinsic material.

Answer 2

Answer:

An intrinsic semiconductor is an undoped semiconductor. This means that holes in the valence band are vacancies created by electrons that have been thermally excited to the conduction band, as opposed to doped semiconductors where holes or electrons are supplied by a “foreign” atom acting as an impurity.