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Why Does A Pure Semiconductor Behave Like An Insulator At Absolute Zero Temperature?

Answer»

For a pure semiconductor at a temperature of absolute ZERO (-273.15oC)the valence band is usually full and there are MAY be no electron in the conduction band and it is difficult to PROVIDE additional energy required for lifting electron from valence band to conduction band by APPLYING electric field. Hence the conductivity of a pure semiconductor at absolute zero temperature is zero and it BEHAVES like an insulator.

For a pure semiconductor at a temperature of absolute zero (-273.15oC)the valence band is usually full and there are may be no electron in the conduction band and it is difficult to provide additional energy required for lifting electron from valence band to conduction band by applying electric field. Hence the conductivity of a pure semiconductor at absolute zero temperature is zero and it behaves like an insulator.



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