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.         Consider a silicon sample at 300 K. Assume that the electron concentration varies linearly with...

.         Consider a silicon sample at 300 K. Assume that the electron concentration varies linearly with distance. At x=0, the electron concentration is n(0). At x=10 µm, the electron concentration is n(10µm)= 5x1014/cm3. If the electron diffusion coefficient, assumed constant, is Dn =30 cm2/sec, determine the electron concentration at x=0 for the following two diffusion current densities: (a) the diffusion current density is found to be Jndiff = + 0.9 A/cm2 and (b) Jndiff = - 0.9 A/cm2.

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