The solution of the problem 4.77 кр 4 from the problem

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Task 4.77

Determine the impurity electrical conductivity of a diamond containing boron with a concentration of 2 × 1021 m-3 and

Arsenic with a concentration of 1 • 1021 m-3. The mobility of electrons and holes for a diamond is, respectively,

0.18 and 0.12 m2 / (B · s).