Fig. 3. High-resolution XPS spectra of (a) Cs 3d, (b) Br 3d core levels of CBB, CsPCN and CsPCN–CBB composites. In situ XPS spectra of Bi 4f (c) in CsPCN–CBB composites. (d and e) Temperature-dependent photoluminescence of CBB and CsPCN–CBB. (f) Steady-state PL spectra, and (g–i) time-resolved PL decay spectra for CsPCN, CBB and CsPCN–CBB.
