Please, solve me these Qs quickly ..I have Exame. Provide a numerical evaluation of the density...

Please, solve me these Qs quickly ..I have Exame.

Provide a numerical evaluation of the density of states for electrons in a bulk material with m_e =0.06m₀ and with an energy 100 meV above the conduction band edge. Express your answer in units of eV^-1 cm^-3.
Estimate the total number of states present per unit energy in a microscopic a =1μm InAs cube. The effective electron mass m_e =0.023m₀ and the electron energy of interest is 100meV

Solutions

Expert Solution

density of states for electrons = (100 * 1.6 * 10^-19)/(0.06 * 9.11 * 10^-31)

= 2.927 * 10¹⁴ eV−1 cm−3

total number of states present per unit energy = 10^-6 * 100 * 1.6 * 10^-19/(0.023 * 9.11 * 10^-31)

= 7.636 * 10⁸

genius_generous answered 2 years ago

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