When a pentavalent impurity is added to a pure semiconductor, it becomes
Question
When a pentavalent impurity is added to a pure semiconductor, it becomesOptions
A) a p-type semiconductor
B) an n-type semiconductor
C) an insulator
D) an intrinsic semi-conductor
Related Lesson: Material and Shape Dependence of Resistance | Electric Current, Resistance, and Ohm's Law
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.