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The number of silicon atoms per m^3 is 5...

The number of silicon atoms per `m^3` is `5 xx 10^28`. This is doped simultaneously with `5 xx10^22` atoms per `m^3` of Arsenic and `5xx 10^20`per `m^3` atoms of Indium. Calculate the number of lectrons and holes. Given that `n_i = 1.5xx 10^16 m `. Is the material n-type or p-type?

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