When a pentavalent impurity is added to a pure semiconductor, it becomes?
- a p-type semiconductor
-
an n-type semiconductor
- an insulator
- 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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