Enhanced exciton-LO phonon coupling in doped quantum dots
Résumé
We present photoluminescence measurements under strong magnetic field done on a sample with charged (n-doped) quantum dots. We have shown that the broadening of the luminescence line does not give a measure of the QDs size dispersion, and that the coupling of electron/hole pairs with LO phonons is greatly enhanced, because of the presence of the ionised impurities nearby the charged dots.
Domaines
Autre [cond-mat.other]
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