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SESANS data for the TC (labeled as CsFAMAPbBrI) and MAPbI3 precursor solutions (labeled as MAPbI) measured at various times as indicated in the legend, from the point after dissolution (t = 0) and up to 9 days after dissolution. For comparison, a SESANS measurement of silica spheres in D2O showing scattering up to a length-scale characteristic of the particle diameter 3 μm is also shown; this was 0.1% by volume.
