ch41-p038 - 38. (a) The Fermi level is above the top of the...

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38. (a) The Fermi level is above the top of the silicon valence band. (b) Measured from the top of the valence band, the energy of the donor state is E = 1.11 eV – 0.11 eV = 1.0 eV. We solve E F from Eq. 41-6: () 1 15 5 ln 1 1.0eV 8.62 10 eV K 300K ln 5.00 10 1 0.744eV. F EE k
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