biostudies-literatureUnknown14(1)Wang HLead-free halide double perovskite Cs₂AgInCl₆ has been extensively studied in recent years due to the lead toxicity and poor stability of common lead halide perovskites. In this study, sodium (Na⁺) and bismuth (Bi³⁺) doped into Cs₂AgInCl₆ double perovskite, then Cs₂Ag_1-_xNa_xIn_1 - yBi_yCl₆ films with broadband warm-yellow emissions were achieved by the blade coating method. Herein, Na and Bi content were changed as variables at a series of parameter optimization experiments, respectively. In the Cs₂Ag_1-_xNa_xIn_1 - yBi_yCl₆ systems, Na⁺ broke the parity-forbidden transiScientific reports14740https://www.ebi.ac.uk/biostudies/studies/S-EPMC11208565biostudies-literatureLead-free Cs₂Ag_1-_xNa_xIn_1 - yBi_yCl₆ perovskite films with broad warm-yellow emission for lighting applications.PMC11208565Yang JChen JWang FWang HZhang CKong JSun YLi LfalseLead-free Cs₂Ag_1-_xNa_xIn_1 - yBi_yCl₆ perovskite films with broad warm-yellow emission for lighting applications.Lead-free halide double perovskite Cs₂AgInCl₆ has been extensively studied in recent years due to the lead toxicity and poor stability of common lead halide perovskites. In this study, sodium (Na⁺) and bismuth (Bi³⁺) doped into Cs₂AgInCl₆ double perovskite, then Cs₂Ag_1-_xNa_xIn_1 - yBi_yCl₆ films with broadband warm-yellow emissions were achieved by the blade coating method. Herein, Na and Bi content were changed as variables at a series of parameter optimization experiments, respectively. In the Cs₂Ag_1-_xNa_xIn_1 - yBi_yCl₆ systems, Na⁺ broke the parity-forbidden transi2024-01-01T00:00:00Z2024 Jun2025-04-19T08:37:21.76Z2024-11-21T05:50:10.419ZS-EPMC112085653892645910.1038/s41598-024-65492-5