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What is the effect of doping and temperature on energy band gaps of semi conductors

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Doping densities cause band gap to shrink; rise in temperature will decrease band gap

Doping has no effect on energy of band gaps, while increase in temperature causes increase in energy of band gaps

Both doping and temperature has no effect on energy band gap

Both doping and increase in temperature causes exponential increase in energy of band gap

answer is A.

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Detailed Solution

Doping i.e., adding of impurities to a semi conductor will reduce energy of band gaps, rise in temperature causes decrease in energy of band gaps due to increase in amplitude of atoms.

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