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When a pentavalent impurity is added to a pure semiconductor, it becomes


Question

When a pentavalent impurity is added to a pure semiconductor, it becomes

Options

A) a p-type semiconductor

B) an n-type semiconductor

C) an insulator

D) an intrinsic semi-conductor


The correct answer is B.

Explanation:

When a pentavalent (5 outer electron)atom is added to a pure semiconductor, there is an extra electrons which does not take part in the covalent bonding resulting in an n-type semiconductor.

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  • When a pentavalent (5 outer electron)atom is added to a pure semiconductor, there is an extra electrons which does not take part in the covalent bonding resulting in an n-type semiconductor.

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