(a) Using the energy band diagram, indicate how one visualizes photo generation, intrinsic Auger recombination, and recombination via SRH centers.
(b) Prior to processing, a portion of a semiconductor sample contains No = 1014/cm3 donors and NT = lOu/cm3 R-G centers. After processing (say in the fabrication of a device), the salVe portion of the semiconductor contains No = 1016 / cm3 donors and NT = 1010 / cm3 R-G centers. Did the processing increase or decrease the minority carrier lifetime? Explain.
(c) Briefly explain the difference between "equilibrium" and "steady-state."
(d) Make a plot of the net recombination rate (R) versus position inside the depletion region of a pn-junction diode maintained under equilibrium conditions.
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