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. 2015 Oct 13;5:15227. doi: 10.1038/srep15227

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(a,c,e,g) PL spectra for (Zn)CuInS alloyed QDs with different stoichiometric ratios of Cu:In:Zn (1:1:3, 1:2:3, 1:4:3, and 1:6:3). The PL curves were obtained by exciting the samples at 450 nm. (b,d,f,h) Temporal evolution of representative fluorescence-intensity trajectories for individual (Zn)CuInS alloyed QDs with different stoichiometric ratios of Cu:In:Zn (1:1:3, 1:2:3, 1:4:3, and 1:6:3). Histograms to right indicate the corresponding distribution of intensities observed in the trajectories. All QDs were excited by continuous 488 nm Argon ion laser. The data were recorded by an EMCCD with offset correction. The binning time is 50 ms. The horizontal black line is the intensity of the background fluorescence signal.