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An unknown semiconductor has E g = 1.1 eV and N c = N v . It is doped with 10 15 cm -3 donors

An unknown semiconductor has E_g = 1.1 eV and N_c = N_v. It is doped with 10¹⁵ cm^-3 donors where the donor level is 0.2 eV below E_c. Given that E_f is 0.25 eV below E_c, calculate n_i and the concentration of electrons and holes in the semiconductor at 300K.

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