What is the energy band gap of silicon and germanium respectively in $e V$ ?

1.1, 0.7

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0.7, 1.1

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- 0.7, - 1.1

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- 1.1, - 0.7

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Solution

The correct option is A $1.1, 0.7$
A band gap, also called an energy band, is an energy range in a solid where no electron states can exist. It generally refers to the energy difference (in electron volts) between the top of the valence band and the bottom of the conduction band in insulators and semiconductors. The energy band gaps of silicon and germanium are $1.1 e V$ and $0.7 e V$ respectively.

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