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The study of time-resolved collective emission of CuInS2 quantum dots in colloidal solutions

Luminescent colloidal CuInS2 quantum dots were prepared by a one-pot wet chemical method. Time-resolved collective emission from various, size-distributed ensembles of the quantum dots was investigated. The obtained results indicated that quenching mechanisms impact the rates of radiative transitions in the highly confined CuInS2 nanocrystals. It was found that the luminescence kinetics of the quantum dot ensembles was strongly affected by their size and this is discussed in terms of a model of the statistical distribution of decay rates.