It is usually assumed that the intrinsic Fermi level lies in the middle of the band gap. However, if

It is usually assumed that the intrinsic Fermi level lies in the middle of the band gap. However, if the effective masses of electron and hole are different (e.g., m” src=”https://files.transtutors.com/cdn/qimg/37e7860582a54bf995c4df52a806a714.jpg” aria-describedby=”aqv”>), the intrinsic Fermi level would be slightly shifted from the exact middle of the band gap. Assuming a semiconductor with band gap Eg = 1 eV, and , where , where is the Fermi level with respect to the middle of the band gap at T = 300K? mm > m