The Fermi level of energy of an intrinsic sem | vedclass

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(A) In an intrinsic semiconductor,the number of electrons in the conduction band is equal to the number of holes in the valence band. The Fermi level

Vedclass · Accepted Answer

In the middle of the forbidden gap

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(A) In an intrinsic semiconductor,the number of electrons in the conduction band is equal to the number of holes in the valence band. The Fermi level $(E_f)$ is defined as the energy level where the probability of finding an electron is $0.5$ at any temperature. For an intrinsic semiconductor,the Fermi level lies exactly in the middle of the forbidden energy gap $(E_g)$,midway between the top of the valence band $(E_v)$ and the bottom of the conduction band $(E_c)$. Mathematically,$E_f = (E_c + E_v) / 2$. Therefore,the correct option is $(A)$.

The Fermi level of energy of an intrinsic semiconductor lies:

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