At absolute zero temperature, pure silicon behaves as (a) non-metal (b) insulator (c) metal (d) extrinsic semiconductor

Answer: (b). At 0 K no electron has enough energy to cross the band gap ( ≈ 1.1 eV for Si). The conduction band is empty and the valence band full, so there are no free carriers. So the answer is (b) insulator.

At absolute zero temperature, pure silicon behaves as | MHT CET 2020 (16 Oct, Shift 2)

Q44MHT CET 2020 · 16 OCT · SHIFT 2Easy

Intrinsic & Extrinsic Semiconductors

At absolute zero temperature, pure silicon behaves as

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Answer: (b)

At $0$ K no electron has enough energy to cross the band gap ( $\approx 1.1$ eV for Si).
The conduction band is empty and the valence band full, so there are no free carriers.
So the answer is (b) insulator.

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Intrinsic & Extrinsic Semiconductors question from MHT CET 2020 (16 Oct, Shift 2)

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