- The Density Of Allowed States For Electrons Per Unit Volume In The Bottom Of The Conduction Band Is Given As Ze E Ce 1 (54.3 KiB) Viewed 18 times
The density of allowed states for electrons per unit volume in the bottom of the conduction band is given as Ze(E)=Ce(
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The density of allowed states for electrons per unit volume in the bottom of the conduction band is given as Ze(E)=Ce(
The density of allowed states for electrons per unit volume in the bottom of the conduction band is given as Ze(E)=Ce(E−Eg)1/2 where Ce=h34π(2m∗)3/2 m∗ is the effective mass of electron. A semiconductor has a Fermi level of 0.5eV below Eg, and an effective mass of one half of the mass of free electron. At room temperature ( T=300 K ) what is the density of states occupied by electrons? (Hint: The density of occupied electron states is Ze(E)F(E)). (15 points) a) At Eg ( 3 points) b) At Eg+kBT (4 points) c) At Eg+3kBT ( 3 points)
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