Fig. 2: Structural characterizations of Cs2NaScCl6:Sb3+ crystals | Light: Science & Applications

Fig. 2: Structural characterizations of Cs2NaScCl6:Sb3+ crystals

From: Excitation-mode-selective emission through multiexcitonic states in a double perovskite single crystal

Fig. 2: Structural characterizations of Cs2NaScCl6:Sb3+ crystals

a Schematic illustration of Cs2NaScCl6 crystal structure highlighting [ScCl6]3− and [SbCl6]3− octahedrons. b Charge density isosurface at (001) facet in Cs2NaScCl6 showing the decoupling of electronic orbitals between neighboring [ScCl6]3− units. c Rietveld refinement of XRD patterns for Cs2NaScCl6 and Cs2NaScCl6:Sb3+ (0.75%) crystals. Insets show the photographs of millimeter-sized single crystals under daylight conditions. Scale bar = 1 mm. d HR-TEM image, e SAED pattern, and f element mapping of a randomly selected small microcrystal. g XPS survey of Cs2NaScCl6 and Cs2NaScCl6:Sb3+ crystals. Inset shows the high-resolution spectrum of Sb 3 d. Note that the two peaks at 531.8 and 535 eV were assigned to 1 s of O2−. h Raman spectra of Cs2NaScCl6 and Cs2NaScCl6:Sb3+ (0.75%, 1.25%) crystals

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