2. Suppose holes in a particular semiconductor have mobility μh = 480 cm²/Vs and electrons in this semiconductor have mo

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2. Suppose holes in a particular semiconductor have mobility μh = 480 cm²/Vs and electrons in this semiconductor have mobility μe = 1350 cm²/Vs. p = 4.63 x 1013 cm-³ and n = 1.13 x 1015 cm-3 are the densities of electrons in the conduction band and holes in the valence band. (a) Calculate the total conductivity of the semiconductor. (b) Show that, independent of doping, the minimum conductivity that can be achieved is o = 2e nintrinic √µeµh. (c) Calculate the minimum conductivity of the semiconductor. (d) Calculate the value of p - n when minimum conductivity is achieved.