Diffusion current practice problems
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Read the Diffusion current class notes.

In some region of a semiconductor, the electron concentration varies linearly with distance, as shown below,
with n₁ = 8.0e+14 cm^-3 and W = 0.1 μm.

Calculate the electron diffusion current density at any point 0 < x < W.

The electron diffusion coefficient is D_n = 35 cm²/V·s.

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