What is the value of conductivity of a semiconductor at absolute zero?explain how?

Asked by monicasyal | 21st Dec, 2009, 10:02: AM

Expert Answer:

Hi dear,

Semiconductor is a material that has conductivity intermediate between that of an insulator and a conductor.

A semiconductor , at absolute zero, uppermost filled electron energy band is fully filled in a semiconductor , but partially filled in a conductor.

The electrical conductivity for semi conductors ranges from about 103 to 10 -9 ohm -1 cm-1 , as compared with maximum conductivity of 10 7 for good conductors and minimum conductivity for insulators of 10 -17 ohm -1cm-1 .

A absolute zero, the conduction band is seperated from the valence band by an energy gap which is also am important characteristic of semi conductor.

Hope this helps.



Answered by  | 21st Dec, 2009, 11:16: AM

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