Question

How does the energy gap in an intrinsic Semiconductor change, when doped with a trivalent impurity?

Answer 1

When an intrinsic semiconductor isdoped with impurity it becomes an extrinsic semiconductor. ... In a n-typesemiconductor, energy gapdecreases.Fermi-level shifts towards the conduction band where , higher number of electrons are available for conduction.

Answer 2

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1. When an intrinsic semiconductor is doped with impurity it becomes an extrinsic semiconductor.
2. In an n-type semiconductor, energy gap decreases.
3. Fermi-level shifts towards the conduction bandwhere, higher number of electrons are available for conduction.
4. In a p-type semiconductor, energy band increases.

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