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In the energy level diagram, what is the separation between conduction band and valence band?

In the energy level diagram, what is the separation between conduction band and valence band? Correct Answer Forbidden energy gap

Energy gap between the conduction band and the valence band is known as forbidden energy gap. 

Semiconductors:

  • In semiconductor, there exists a finite but small band gap between conduction band and valence band (Eg < 3 eV).
  • Because of the small band gap, at room temperature, some electrons from valence band can acquire enough energy to cross the energy gap and enter the conduction band.

 

 

Therefore, the forbidden energy band gap in conductors, semiconductors and insulators are in the relation Eg1 < Eg2 < Eg3.

Related Questions

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