Contribution of electron-phonon coupling to the luminescence spectra of single colloidal quantum dots
arXiv:1812.09925 · doi:10.1063/1.5124913
Abstract
Luminescence spectroscopy experiments were realized for single colloidal quantum dots CdSe/ZnS in a broad temperature range above room temperature in a nitrogen atmosphere. Broadening and shifts of spectra due to the temperature change as well as due to spectral diffusion processes were detected and analyzed. A linear correlation between the positions of maxima and the squared linewidths of the spectra was found. This dependence was explained by a model which takes into account the slow variation of the electron-phonon coupling strength.
10 pages, 6 figures