For extrinsic semiconductors; when doping level is increased; [JEE Main 2021, 25 Feb (Shift 2)]

Fermi-level of \(\mathrm{p}\) and n-type semiconductors will not be affected.

Fermi-level of p-type semiconductor will go upward and Fermi-level of n-type semiconductors will go downward.

Fermi-level of p-type semiconductors will go downward and Fermi-level of n-type semiconductor will go upward.

Fermi-level of both p-type and n-type semiconductors will go upward for \(T>{T}_{F}K\) and downward for \(T<\) \({T}_{F}K\), where \({T}_{F}\) is Fermi temperature.