At 0 ~K temperature, a p -type semiconductor

Q144 / 180 · AIIMS 2002 · Physics

At $0 \mathrm{~K}$ temperature, a $p$-type semiconductor

A
does not have any charge carriers
Correct answer
B
has few holes but no free electrons
C
has few holes and few free electrons
D
has equal number of holes and free electrons.

Solution

At $0 \mathrm{~K}$ temperature, a pure semiconductor behaves as an insulator, because it has a few holes in its valence band. But there is no free electron in this state.

Hence, the correct answer is option: 'B'.

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