(a) What is the probability of an electron state being filled if it is located at the Fermi level?

(b) If the probability that a state is filled at the conduction band edge (Ec) is precisely equal to the probability that a state is empty at the valence band edge (Ev), where is the Fermi level located?

(c) The Maxwell-Boltzmann distribution is often used to approximate the Fermi-Dirac distribution function. On the same set of axes, sketch both distributions as a function of (E- Ef)/kT. Consider only positive values of E- Ef. For what range of (E- Ef)/kT is the Maxwell- Boltzmann approximation accurate to within 10%?

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okpalawalter8 okpalawalter8 · Answer 1 · 2020-02-12T21:54:20+01:00

Answer:

a) the probability of an electron state being filled if it is located at the Fermi level is = 1/2

b) The Fermi level is exactly at the middle of the valence band and the conduction band

c) The Maxwell - Boltzmann approximation accurate to within 10% for [tex]\frac{E-E_{F}}{kT} \geq 2.31[/tex]

Explanation:

The explanation to various solution above is on the first, second, third, fourth and fifth uploaded image

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