Fig. 5: Mechanism exploration. | Light: Science & Applications

Fig. 5: Mechanism exploration.

From: Break-through amplified spontaneous emission with ultra-low threshold in perovskite via synergetic moisture and BHT dual strategies

Fig. 5

a Depth profile of N 1s peak in XPS spectra and b relative integral area of the MA signal peak in different etching time of pristine MAPbI3 and champion films. c Schematic illustration for the crystallization of MAPbI3 under the dual action of BHT and water. d 1H NMR spectra of MAPbI3+4% BHT and champion films. e Ratio of the relative integral area of H2O and DMSO-d6 from NMR results at different moisture-treated time

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