Why resistance of semiconductor decreases with increase in temperature


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Why resistance of semiconductor decreases with increase in temperature?

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Answer:

As a result, in higher temperatures, a semi-conductor's valence electrons are free = conduction results, resistivity decreases. ... Higher the bandgap of a semi-conductor - more the energy needed to convert it into a conductor. The bandgap of Germanium is 0.67 eV, silicon at 1.1 eV.


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