Q 1319834719.     Selenium `(Se)` is a group VI element (i.e. two columns to the right of Silicon on the periodic table). An extrinsic semiconductor is produced by doping Silicon `(Si)` with `1020` Selenium atoms per `m^3`. Assuming saturation, calculate the conductivity of the extrinsic semiconductor.
Note: Assume that the mobility of holes is equal to `= 0.05 m^2 (V.s)` and that the mobility of electrons is equal to `= 0.14 m^2 (Vs)`


A

`9.6 ( Omega m)^{-1}`

B

`1.12 ( Omega m)^{-1}`

C

`4.48 ( Omega m)^{-1}`

D

`2.24 ( Omega m)^{-1}`

HINT

`sigma = 2 p e mu_h`

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