Chapter 1, Problem 1.15P

In GaAs, the mobilities are ${\mu }_n=8500{\text{cm}}^{\text{2}}\text{/V}-\text{s}$ and ${\mu }_p=400{\text{cm}}^{\text{2}}\text{/V}-\text{s}$ . (a) Determine the range in conductivity for a range in donor concentration of ${10}^{15}\le N_d\le {10}^{19}{\text{cm}}^{-3}$ . (b) Using the results of part (a), determine the range in drift current density if the applied electric field is $E=0.10\text{V/cm}$ .