Question

Difference between intrinsic and extrinsic semiconductor

Answer 1

Intrinsic are pure semiconductor whereas extrinsic are doped semiconductor ..

Answer 2

Hey !!

Intrinsic Semiconductor

• It is a semiconductor in pure form.
• Intrinsic charge carries are electrons and holes with equal concentration.
• Current due to charge carries is feeble ( of the order of μ A ).

Extrinsic semiconductors

• It is a semiconductor doped with trivalent or pentavalent impurity atoms.
• The two concentrations are unequal in it. There is excess of electrons.
• Current due to charge carries is significant ( of the order of mA )

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