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N-Type Semiconductor

The impurity ...

Question

The impurity to be doped in pure germanium to make it p-type semiconductor is:

A

Aluminium

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B

Phosphorus

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C

Antimony

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D

Arsenic

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Solution

The correct option is B Aluminium
To make p-type semiconductor from pure germanium we have to generate p-type holes.
For this we want ionic substance such as aluminium to impure the pure germinium.

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