fig2

Figure 2. (A) PL spectra excited at different wavelengths and PLE spectra monitored at different emission wavelengths for the Cs₃CeI₆@CBP films; (B) TRPL decay curves of the blue and yellow emission bands in the Cs₃CeI₆@CBP films under 350 nm excitation; (C) Deconvoluted PL spectrum of Cs₃CeI₆@CBP, showing the contributions from Cs₃CeI₆ and CBP in the blue-emission region; Cs₃CeI₆-1 and Cs₃CeI₆-2 represent the characteristic peaks of Cs₃CeI₆ at 400 and 430 nm, respectively; (D) PL decay curves of Cs₃CeI₆, CBP, and Cs₃CeI₆@CBP films under 350 nm excitation. PL: Photoluminescence; PLE: photoluminescence excitation; CBP: 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl; TRPL: time-resolved photoluminescence; EM: emission.