Figure 1 (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 1

Caption

(a) Illustration of the microscopy imaging system to see exciton diffusion. (b) Absorption and photoluminescence (PL) spectra of 3 types of our perovskite nanocrystals NCs. (d-g) Imaging results for our 3 types of perovskite NCs, showing (d) the size of the pump which excites the samples, and (e-g) the sizes of their PL. The larger sizes of the PL images imply that the excitons travel for long distances before recombining and emitting light. From these sizes, we can estimate the travel ranges of the excitons.

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by Tze Chien Sum

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