In an intrinsic semiconductor, at any ordinary temperature, the correct relation between the number of electrons per unit volume ( n e ) and number of holes per unit volume ( n h ) is

Question

In an intrinsic semiconductor, at any ordinary temperature, the correct relation between the number of electrons per unit volume ( n e ​ ) and number of holes per unit volume ( n h ​ ) is

TestHub · Accepted Answer

In an intrinsic semiconductor, charge carriers are generated due to thermal excitation.

When an electron jumps from the valence band to the conduction band, it leaves behind a vacancy in the valence band, which acts as a hole.

Since electrons and holes are always created in pairs, the number of electrons per unit volume is exactly equal to the number of holes per unit volume.

Therefore, $n_{e} = n_{h}$ .

Answer: $n_{e} = n_{h}$

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