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Electrical conductivity of a semiconductor has been determined to be 2.3 10^ 5 ( m)^ -1 . Electron and hole mobilities in the semiconductor are

Electrical conductivity of a semiconductor has been determined to be 2.310^5(m)^-1. Electron and hole mobilities in the semiconductor are 0.50 m^2/V.s and 0.14 m^2/V.s, respectively.

(a) Determine concentrations of charge carriers (electrons and holes) in the semiconductor if overall concentration of the charge carriers is 1.007610^25m^-3.!(8 points)

(b) Suggest type of the semiconductor and provide reason for your suggestion? (2 points)

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