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Germanium to which 5 ( 1022 m-3 Sb atoms have

Germanium to which 5 ( 1022 m-3 Sb atoms have

Germanium to which 5 ( 1022 m-3 Sb atoms have been added is an extrinsic semiconductor at room temperature, and virtually all the Sb atoms may be thought of as being ionized (i.e., one charge carrier exists for each Sb atom). (a) Is this material n-type or p-type? (b) Calculate the electrical conductivity of this material, assuming electron and hole mobilities of 0.1 and 0.05 m2/V-s, respectively.

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