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NEET 2007 (AIPMT) · Intrinsic & Extrinsic Semiconductors

Intrinsic & Extrinsic Semiconductors question from NEET 2007 (AIPMT)

Q53NEET 2007 · AIPMTMedium

Intrinsic & Extrinsic Semiconductors

In the energy band diagram of a material shown below, the open circles and filled circles denote holes and electrons respectively. The material is

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Answer: (d)

The diagram shows a band gap $E_g$ between $E_C$ and $E_V$ , so it is a semiconductor (not a metal).
Holes (open circles) in the valence band outnumber electrons (filled circles) in the conduction band.
Holes are the majority carriers, so the material is p-type.
So the answer is (d) a p-type semiconductor.

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