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In insulators (C.B. is conduction band and V.B. is valence band)

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Important Questions on Semiconductors

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The energy gap in case of which of the following is less than 3 eV?
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Energy bands in solids are a consequence of
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The band gaps of an insulator, semiconductor and conductor are respectively Eg1Eg2 and Eg3. The relationship between them is given as
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Three semiconductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is
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Assertion: The energy gap between the valence band and conduction band is greater in silicon than in germanium.

Reason: Thermal energy produces fewer minority carriers in silicon than in germanium.

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Carbon, silicon and germanium have four valence electrons each. The most appropriate statement for these elements (at room temperature) is,
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An electron cannot be occupied in
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When boron is added as an impurity to silicon, the resulting material is