Doping a pure crystal of silicon () with a Group 13 element like Boron () produces an extrinsic semiconductor classified as:

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Question

Doping a pure crystal of silicon ($Si$) with a Group 13 element like Boron ($B$) produces an extrinsic semiconductor classified as:

Prashant Kotian · Accepted Answer

Correct answer: B. Boron has one fewer valence electron than silicon. When B is doped into Si, it creates electron-deficient sites or positive holes. Conduction occurs mainly through holes, so the material is a p-type semiconductor.

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