Name two factors on which electrical conductivity of a pure semiconductor at a given temperature depends. At what temperature would an intrinsic semiconductor behave like a perfect insulator?and why?

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Solution

Dear Student
The two factors on which the electrical conductivity of a pure semiconductors at a given temperature depends

1.Width of the forbidden band
2.Intrinsic charge carrier concentration

At absolute zero (0K), an intrinsic semiconductor will act like a perfect insulator. At this temperature, the electrons in the valence band will remain there. When the temperature increases, some of the electrons from the valence band got excited and moves to the conduction band. This will give rise to the conductivity of the semiconductor.

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