Question: Calculate the diffusion current density given a density gradient. Assume that, in an n - type gallium arsenide semiconductor at T = 3 0 0

Calculate the diffusion current density given a density gradient.
Assume that, in an n-type gallium arsenide semiconductor at T =300 K, the electron con- centration varies linearly from 11018 to 7 x 107 cm3 over a distance of 0.10 cm. Calculate the diffusion current density if the electron diffusion coefficient is D1=225 cm2/s.

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