Near UV luminescent Cs2NaBi0.75Sb0.25Cl6 perovskite colloidal nanocrystals with high stability |
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| Authors: | Huixian Yang Yanmei Guo Guoning Liu Ruowei Song Jinxi Chen Yongbing Lou Yixin Zhao |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory for Science and Application of Molecular Ferroelectrics, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Devices, Southeast University, Nanjing 211189, China;2. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | Near UV highly luminescent colloidal Cs2NaBiCl6 nanocrystals (NCs) were synthesized by a simple low-cost ligand-assisted reprecipitation method. In our strategy, metal chloride precursors were added to the mixture of anti-solvent and ligand at room-temperature. The obtained Cs2NaBiCl6 NCs exhibited a bright blue emission with significantly improved photoluminescence quantum yield (PLQY) of 39.05%. The optical properties and stability were greatly enhanced by doping Sb where Cs2NaBi0.75Sb0.25Cl6 showed a high PLQY of 46.57%, and both the powder and the colloidal solution exhibited superior stability. |
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