Fig. 2: Proton-transfer-induced 2D perovskite formation with BnA. | Nature Communications

Fig. 2: Proton-transfer-induced 2D perovskite formation with BnA.

From: Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot

Fig. 2

a 1H NMR spectra of MAPbBr3 precursor solutions in DMSO-d6 according after addition of additives. Pristine MAPbBr3 (black), MAPbBr3 with 2.4 mol% of ANI (black), and MAPbBr3 with 2.4 mol% of BnA (green). b, c 1H NMR spectra according to the different amount of BnA and ANI addition. d Electron density contour plots of BnA (bottom) and ANI (top) with an iso-surface of 0.03 e Å−3. e Integrated electron density profile for BnA (green) and ANI (red) along with b-axis in d. f, g Absorption spectra of MAPbBr3 thin film according to the addition of BnA and ANI. h Proton-transfer reaction between MA and BnA.

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