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Unformatted text preview: 3.39 Consider the energy levels shown in Figure 3.40. Let T = 300 K. (a) If E 1 – E F = 0.30 eV, determine the probability that an energy state at E = E 1 is occupied by an electron and the probability that an energy state at E = E 2 is empty. (b) Repeat part (a) if E F – E 2 = 0.40 eV. 3.42 Assume the Fermi energy level is exactly in the center of the bandgap energy of a semiconductor at T = 300 K. (a) Calculate the probability that an energy state in the bottom of the conduction band is occupied by an electron for Si, Ge, and GaAs. (b) Calculate the probability that an energy state in the top of the valence band is empty for Si, Ge, and GaAs. 3.43 Calculate the temperature at which there is a 106 probability that an energy state 0.55 eV above the Fermi energy level is occupied by an electron....
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 Spring '08
 KAVIANI
 Probability, Condensed matter physics, Fermi energy level, energy state

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