Despite the loss in crystallinity associated with the (040) RP reflection being quite significant, no evidence of variation in coherence length along the z-axes of the 2D phase is found, as deduced from the (040) FWHM temporal evolution in Figure 6 c.
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Enhancing the Morpho-Structural Stability of FAPbBr<sub>3</sub> Solar Cells via 2D Nanoscale Layer Passivation of the Perovskite Interface: An In-Situ XRD Study.
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