Difference between Intrinsic and Extrinsic Semiconductors

Intrinsic Semiconductors	Extrinsic Semiconductors
Intrinsic semiconductors are the conductors which have pure form of semiconductors. Therefore they do not have any quantity of impurity.	Extrinsic semiconductors are the conductors which are made by adding some quantity of impurity to pure semiconductors.
They show poor electrical conductivity.	They show high electrical conductivity.
They have the same number of electrons in conduction band and holes in valance band.	They have the different number of electrons and holes. It depends on the type of that particular extrinsic semiconductor.
The electrical conductivity of intrinsic semiconductors totally depends on temperature	The electrical conductivity of extrinsic semiconductors depends on both temperature and amount of impurity doped in semiconductor
The Fermi energy levels lie in the middle of the valence and conduction band.	The Fermi energy level shifts towards the valence or conduction band.
In intrinsic semiconductors, the pure forms of silicon and germanium crystals are used	In extrinsic semiconductors, impurities like arsenic, antimony, phosphorous, aluminium indium, etc are added.

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