Diffusion current practice problems
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Read the Diffusion current class notes.
In some region of a semiconductor, the hole concentration varies sinusoidally with distance, as shown below,
with p1 = 7.0e+14 cm-3 and L = 7 μm.
Calculate the hole diffusion current density at the point x = 6.3 μm.
The hole diffusion coefficient is Dp = 10 cm2/V·s.
Note: Be careful with radians versus degrees for the function. In this case, you will likely be using radians.
