Chemistry, asked by praveenaa1425, 1 year ago

To determine the energy band gap of a semiconductor by four probe method

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Answered by akhilmh
1
According to band theory, the energy levels of semiconductors can be grouped into two bands, valence band and the conduction band. In the presence of an external electric field it is electrons in the valence band that can move freely, thereby responsible for the electrical conductivity of semiconductors.
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