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Questions  

The probability of electrons to be found in the conduction band of an intrinsic semiconductor at a finite temperature

a
Decreases exponentially with increasing band gap
b
Increases exponentially with increasing band gap
c
Decreases with increasing temperature
d
Is independent of the temperature and the band gap

detailed solution

Correct option is A

The probability of electrons to be found in the conduction band of an intrinsic semiconductor is given asPE=11+eE−EFkT;where k: Boltzmann's constantHence, at a finite temperature, the probability decreases exponentially with increasing band gap.

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