Question

One among the following is doping material in p-type of semiconductor:

A

Carbon

B

Indium

C

Arsenic

D

Phosphorous

Medium

Solution

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Correct option is B)

We get a p-type of semiconductor when semiconductor is doped with trivalent material link Indium. The addition of trivalent impurities such as boron, aluminum or gallium to an intrinsic semiconductor creates deficiencies of valence electrons,called "holes". It is typical to use B2H6 diborane gas to diffuse boron into the silicon material.

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