Hand written solution required

Locate the Fermi energy level of GaAs with n = 3.1 x 1018 cm at T = 400K and compare it when T = 500K. Below is the table of effective density of states for Si, GaAs and Ge at room temp Ne (cm Ne (cm-3) Silicon 2.8 x 1019 1.04 x 1019 Gallium arsenide 4.7 x 1017 7.0 x 1018 Germanium 1.04 x 1019 6.0 x 1018