The probbility of electrons to be found in the conduction band of an intrinsit semiconductor at a finile temperature

Options

A. Decreases exponenetially with increasing band gap
B. Increases exponenetially with increases band gap
C. Decreases with increasing temperature
D. Is dependent of the temperature and the band gap

Answer

A

Explanation

The probability of electrons to be found in the conduction band of an intrinsic semiconductor
`P(E)=1/(1+e^(((E-E_(F)))/(KT)))`, where `k` =Boltzmann's constant hence, at a finite temperature, the probability decreases exponenetially with increasing band gap.