In GaAs, the mobilities are (mu_{n}=8500 mathrm{~cm}^{2} / mathrm{V}-mathrm{s}) and (mu_{p}=400 mathrm{~cm}^{2} / mathrm{V}-mathrm{s}). (a) Determine the

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In GaAs, the mobilities are \(\mu_{n}=8500 \mathrm{~cm}^{2} / \mathrm{V}-\mathrm{s}\) and \(\mu_{p}=400 \mathrm{~cm}^{2} / \mathrm{V}-\mathrm{s}\).

(a) Determine the range in conductivity for a range in donor concentration of \(10^{15} \leq N_{d} \leq 10^{19} \mathrm{~cm}^{-3}\).

(b) Using the results of part (a), determine the range in drift current density if the applied electric field is \(E=0.10 \mathrm{~V} / \mathrm{cm}\).

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