Fig. 1: Characterization of Cs4PbBr6 SCs.
From: Lead-halide Cs4PbBr6 single crystals for high-sensitivity radiation detection

a Schematic illustration of the Cs4PbBr6 crystal structure. b Powder XRD pattern of Cs4PbBr6 powder. c X-ray photoelectron spectroscopy (XPS) spectra of Cs4PbBr6 SCs. d–f High-resolution XPS spectra of Cs 3d, Pb 4f, and Br 3d.