First slide

Electrons and holes in semiconductors

Question

The correct relation between $n_{e} a n d n_{h}$ in an intrinsic semiconductor at ordinary temperature is

Easy

A

$n_{e} > n_{h}$
B

$n_{e} < n_{h}$
C

$n_{e} = n_{h}$
D

$n_{e} = n_{h} = 0$

Solution

Electrons jumping from valence band to conduction band generates equal number of holes (vacancy) in valence band.

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