Question
How does the conductivity of semiconductors increase with increasing temperature?
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Answer
Effect of temperature on semiconductors : When the temperature of semiconductors is increased, more electrons get excited by thermal energy and transition from valence band to conduction band. Hence more quantity holes are produced in. In this way, by increasing the temperature, conductivity increases due to increase in the number of charge carriers. The resistance temperature coefficient of semiconductors is negative. Semiconductors behave like insulators at absolute zero temperature.
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