Definition of Fermi level: Fermi level is defined as the energy level in which the probability of OCCUPANCY of an electron is 1/2.
For semi-conductors, Fermi level is in between valence and conduction bands. But electrons can occupy only definite energy states i.e an electron can be in valence band or conduction band. How can it be in between them?
For example: An electron can be in ground state or first excited state.It cannot be in between them.
I am stuck with this question. Please help me!