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| Home > Publications database > Experimental design of (Cs,Rb) 2 Sn(Bi)Cl 6 blue phosphors by cation-substitution-induced lattice strain |
| Journal Article | FZJ-2025-01535 |
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2025
RSC
London [u.a.]
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Please use a persistent id in citations: doi:10.1039/D4TC03749A doi:10.34734/FZJ-2025-01535
Abstract: A mild high-throughput synthesis of doubly substituted (CsxRb1−x)2SnyBi1−yCl6 perovskites yields single-phase solid-solution compounds in the compositional domain of x = 0–1 and y ≥ 0.75. Bi-substituted compounds emit relatively intense and broadband blue photoluminescence (PL) peaked at 455 nm, originating from the self-trapped excitonic states. Both Sn/Bi and Cs/Rb substitutions were found to exert a lattice strain with the maximal strain magnitudes observed close to x = 0.5 and y = 0.90. The PL parameters of the single-phase (CsxRb1−x)2SnyBi1−yCl6 samples, in particular, the PL intensity and lifetime, as well as the rate constants of radiative and non-radiative recombination, correlate with the strain magnitude.
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