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An n-type semiconductor has impurity lev...

An n-type semiconductor has impurity level `20 meV` below the conduction band. In a thermal collision, transferble enegry is `KT` ( K =`(8.62xx10^(-5) eV//K)` ). The value of `T` for which electrons start to jump in conduction bond is :

A

232 K

B

348 K

C

400 K

D

600 K

Text Solution

Verified by Experts

The correct Answer is:
A
`KT=20xx10^(-3)eV`
`:.T=(20xx10^(-3))/(k)eV`
`=(20xx10^(-3)eV )/(8.62xx10^(-5)eV//K)=232K`
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