A semiconductor is a material with electrical characteristics that fall in between a conductor and an insulator.
The valence electron in the outermost orbit of the best conductors is one, whereas the valence electron in the outermost orbit of the best insulators is eight.
The greatest semiconductors have four valence electrons in their atoms. "Is germanium a semiconductor?" is the question now. Yes, germanium is a semiconductor with four valence electrons.
If every atom in a germanium crystal is a germanium atom, the crystal is considered to be an inherent semiconductor.
A pure semiconductor is an inherent semiconductor.
Doping is a procedure that increases the conductivity of a semiconductor.
It is the addition of impurities to an intrinsic semiconductor crystal to improve electrical performance.