What is the connection between Fermi Level and Electronic Grade Materials?
fermi level:- This is the level of energy that lies in the forbiddan gap. It is the level of energy where the concentration of electrons in conduction band is equal to the concentration of holes in valance band.
Since in intrinsic semiconductor the probability of electrons in conduction band is equal to the holes in valance band therefore lies exactly in the middle of fforbiddan gap
In case of extrinsic semiconductor material, that depends what sort of dopping is there. If the donar impurity is there, it will shift towards conduction band, and if there is acceptor impurity it will shift towards valance band.