Fig. 2: Ligands distribution. | Nature Communications

Fig. 2: Ligands distribution.

From: Sequential Organic Ligand Modifications to Dedicatedly Restructure Grain Boundary and Surface of Perovskites

Fig. 2: Ligands distribution.

a, b TOP-SIMS spectra of Perovskite/X/Y and Perovskite/Y/X thin film. c Pb 4f XPS spectra of Ctrl-Perovskite, Perovskite/X and Perovskite/X/Y, Perovskite/Y/X and O 1s (d) XPS spectra of only X and Perovskite/X and Perovskite/Y/X film. Local dark currents measured at the GBs (e) and GS (f) of Ctrl-Perovskite and Perovskite/X thin film. g Topography and KPFM images of Ctrl-Perovskite, Perovskite/X and Perovskite/X/Y. h Statistical local dark-current distribution collected from 40 points at GBs and GSs of Ctrl-Perovskite, Perovskite/X, Perovskite/Y and Perovskite/X/Y (X= DFABr Y = 4APPBr).

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