Diffusion current practice problems
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A region of p-type semiconductor extends from x = 0 to x = L = 3.5 μm.
The hole concentration at x = 0 is 7.0e+10 cm-3 and at x = L, it is 1.0e+10 cm-3.
The hole diffusion coefficient in the region is 8 cm2/s.
What is the hole current density in the region?