Fig. 1 Experimental strategy and elemental and morphological analysis of 3D/2D perovskite bilayer. Experimental strategy and elemental and morphological.

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Presentation transcript:

Fig. 1 Experimental strategy and elemental and morphological analysis of 3D/2D perovskite bilayer. Experimental strategy and elemental and morphological analysis of 3D/2D perovskite bilayer. (A) Schematic illustration of the 2D treatment of 3D perovskite to form the 3D/2D bilayer perovskite with the structural representation of the FEA+ cation and the corresponding optimized geometry [density functional theory (DFT) calculation on B3LYP/6-31G(d) level of theory]. (B and C) Structures of pure 3D perovskite and pure 2D perovskite, respectively. (D) Fluorine XPS in-depth profiling of a 3D/2D bilayer perovskite. (E and F) SEM images of a pure 3D and an FEAI-treated 3D/2D perovskite film, respectively. Scale bars, 1000 nm. Yuhang Liu et al. Sci Adv 2019;5:eaaw2543 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).