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Question

Which of the following will produce p-type semiconductor?


A

Silicon doped with phosphorus

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B

Germanium doped with Arsenic

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C

Gallium doped with Arsenic

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D

Germanium doped with gallium

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Solution

The correct option is D

Germanium doped with gallium


Germanium is group 14 element white gallium is group 13 element. Hence, a hole will be created. i.e., it will be p-type semiconductor


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