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Answer:
The Fermi energy is 0.568 eV and the conductivity at room temperature is 31.24 (Ωcm)⁻¹
Explanation:
Data given:
Nd = doping concentration = 5x10⁶/cm³
According the mass action law, the hole concentration is:
The conductivity of n-type of semi-conductor is equal to:
The mobility of Germanium is 3900 cm²/Vs
σ = 1.6x10⁻¹⁹ * 5x10¹⁶ * 3900 = 31.24 (Ωcm)⁻¹