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A semiconductor has the eIectron concent...

A semiconductor has the eIectron concentration `0.45 xx 10^(12) "m"^(-3)` and the hoIe concentration `5 xx 10^(20)m^(-3)`. CaIcuIate the conductivity of the mate- riaI of this semiconductor.
Given, Electron mobiIity `=0.135 "m"^(2). V^(-1).s^(-1)` and hoIe mobiIity `=0.048 "m"^(2). V^(-1). s^(-1)`.

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Verified by Experts

Here ,n =`0.45 xx10^(12) "m"^(-3)`
p=`5xx10^(20) "m"^(-3)`
`mu_(e)=0.135 "m"^(2).V^(-1).s^(-1)`
`mu_(h)=0.048 "m"^(2).V^(-1).s^(-1)`
So the conductivity of the material of this semiconductor,
`sigma=e(nmu_(e) +pmu_(h))`
`=1.6 xx10^(-19) [(0.45 xx10^(12)) xx0.135 +(5xx10^(20)) xx 0.048]`
`=3.84 "mho.m"^(-1)`
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