Question

The probability of electrons to be found in the condition band of an intrinsic semiconductor $6$ at a finite temperature.

• A. Increases exponentially with increasing band gap
• B. Decreases exponentially with increasing band gap
• C. Decreases with increasing temperature
• D. Is independent of the temperature and the band gap

Answer 1

The correct option is B Decreases exponentially with increasing band gap

Electrons pump from valence band to conduction band, Initial electrons are in valence bond.

Probability of finding the electron decreases exponentially with band gap because more energy is revised to overcome the band gap to pump to conduction band as here it is mentioned at finite temperature as no external energy is given the electrons.