Indium antimonide (InSb) is a semiconductor with a narrow band gap of 0.17eV and an intrinsic carrier concentration of 2×1016cm-3. The mobility of electrons in InSb is 78000 cm2/V⋅s and their effective mass is 0.014m0, while the holes have a mobility of 1000cm2/V⋅s and a mass of 0.43m0 (all at 300K).
What is the Fermi level with respect to mid-gap in intrinsic InSb?