Physics of Semiconductor Devices

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Calculate the Fermi energy

The density of states for a particular material is given in the following figure.

Here E0 = 7.0E-20 J, E1 = 1.0E-19 J, E2 = 1.9E-19 J, E3 = 2.8E-19 J, E4 = 3.2E-19 J, E5 = 3.9E-19 J, and N0 = 3.0E+47 J-1m-3.

The total electron density is 2.25E+28 electrons/m³.

What is the Fermi energy at zero temperature? For a semiconductor, find the limiting value of the Fermi energy as the temperature approaches zero.

Ef = eV

What kind of material is this?