Fig. 2: Effect of PR in colloidal PNCs. | Light: Science & Applications

Fig. 2: Effect of PR in colloidal PNCs.

From: Origins of the long-range exciton diffusion in perovskite nanocrystal films: photon recycling vs exciton hopping

Fig. 2

(a, b) Illustration of the effect of PR on the PL spectra and lifetimes. (c) Redshifting PL spectra and (d) increasing PL lifetime of our colloidal PNCs. The inset in fig. (c) shows the peak position as a function of concentration, as fitted by the reabsorption model (Supplementary Note 3). (e) Effective PL lifetimes of our PNCs with different ligands as a function of the relative colloidal absorbance (χ). The data were fitted with our PR model. The samples were excited with a 3.1 eV pump with a fluence corresponding to N ~ 0.6 excitons per NC

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