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Unformatted text preview: 45. The energy received by each electron is exactly the diﬀerence in energy between the bottom of the
conduction band and the top of the valence band (1.1 eV). The number of electrons that can be excited
across the gap by a single 662-keV photon is N = (662 × 103 eV)/(1.1 eV) = 6.0 × 105 . Since each
electron that jumps the gap leaves a hole behind, this is also the number of electron-hole pairs that can
be created. ...
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