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How the conductivity of semiconductor increases …

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How the conductivity of semiconductor increases with increase in temperature

Posted by Pragnya Mohalik 6 years, 10 months ago

CBSE > Class 12 > Physics

4 answers

Rishabh Jain 6 years, 10 months ago

Bcoz it's alpha or temperature coefficient is negative

Sonal Sonal 6 years, 10 months ago

Formula of resistivity is m/n×esquear×to and temperatur is directly portional to n(no. Density )than if temp increase n while also increase and acc to the formula if n increase resistivity while be decrease and conductivity is equal to 1upon resistivity so if resistivity decrease conductivity incerase in semicondutor

Ashok Kumar 6 years, 10 months ago

Because the photosensitive metal's electron get energy and excited from valence band to conduction band

Rahul Choudhary 6 years, 10 months ago

Because some electron get enough energy to jump on conduction band from valence band

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