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- W2004117752 abstract "We consider electron-hole recombination in semiconductors under high injection levels of electrons and holes interacting with ‘hot LO-phonons’. It is shown that the increasing value of E0, an energy parameter which characterizes the exponential low energy edge in the luminescence spectra, with laser light intensity is the result of the increasing concentration of phonons in excess of equilibrium. Dependence of E0 with the effective temperature T∗ of the phonons is given. Furthermore, it is shown that the electron-phonon interaction also contributes to the shift of the spectra towards lower energies. On considère dans les semiconducteurs la recombinaison eletron-trou a des forts niveaux d'injection où les eletrons et trous interagissent avec des phonons chands LO. On montre que le parametre E0, qui caracterise le bord exponentiel de basse energie du spectre de luminescence, augmente avec l'intensité de l'emission laser en consequence de la concentration croissante des phonons hors equilibre. On présente la dépendence de E0 avec la temperature effective T∗ des phonons. Finalement, on montre qu'il y a aussi une contribution de l'interaction eletron-phonon au déplacement du spectre vers les basses energies." @default.
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- W2004117752 date "1974-06-01" @default.
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- W2004117752 title "‘Hot phonon’ contribution to Urbach's tails in semiconductors" @default.
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- W2004117752 doi "https://doi.org/10.1016/0038-1098(74)90646-2" @default.
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