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Time-resolved luminescence of self-assembled CdSe/ZnSe quantum dots

Time-resolved inhomogeneously broadened spectra of CdSe/ZnSe self-assembled QDs excited by weak picosecond and powerful nanosecond laser pulses have been measured. The peculiarities of the kinetics of the CdSe/ZnSe self-assembled QDs' spectra and their changes at high excitation have been explained by different recombination times of QDs (it shortens for QDs of smaller size) and by saturation (state filling) of QDs that arises first of all for QDs of greater size.