Extended Data Fig. 5: XRD sample preparations.
From: Slow carrier relaxation in tin-based perovskite nanocrystals
(a) The colloidal nanocrystals in hexane were drop-casted onto a glass substrate and dried for ten minutes in a glovebox without further processing. (b) A schematic diagram of XRD measurements for FASnI3 nanocrystal superlattices. (c) The drop-casted film was scraped by a blade so the superlattice structure was broken. (d) A schematic diagram of XRD measurements for scratched-off FASnI3 nanocrystal powder.
