Fig. 2: Monitoring the growth of individual perovskite nanocrystals and growth kinetics simulation. | Nature Communications

Fig. 2: Monitoring the growth of individual perovskite nanocrystals and growth kinetics simulation.

From: Single particle fluorescence imaging of perovskite nanocrystal crystallization for illustrating coupled nucleation-and-growth

Fig. 2

a In situ fluorescence spectra of perovskite nanocrystals in polymeric matrix. Insert is plot of Brus equation. The red line with arrow was plotted to indicate the size increasing. b Plot of fluorescence intensity (log) vs. particle radius of perovskite nanocrystal using the derived equation. Insert is flowsheet of the relationship (fluorescence intensity and particle radius) derivation. c Temporal evolution of an individual perovskite nanocrystal radius at precursor concentration of C0. The blue line represents the calculated curves from the diffusion-controlled growth model. The model is schematically shown in insert. d Statistical histogram of the fast- and slow-growth time duration of the individual perovskite nanocrystals. 119 nanocrystals were counted. 80% of the final size was defined as the segmentation point for the fast and slow growth. e TEM image of the perovskite nanocrystals at precursor concentration of C0 and histogram of the particle size distribution (insert), as well as the high-resolution TEM image of an individual perovskite nanocrystal and the corresponding FFT image.

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