Near UV luminescent Cs_(2)NaBi_(0.75)Sb_(0.25)Cl_(6)perovskite colloidal nanocrystals with high stability  

作　　者：Huixian Yang Yanmei Guo Guoning Liu Ruowei Song Jinxi Chen Yongbing Lou Yixin Zhao 

机构地区：[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

出　　处：《Chinese Chemical Letters》2022年第1期537-540,共4页中国化学快报（英文版）

基　　金：sponsored by the National Natural Science Foundation of China(Nos.21475021,21427807 and 21777096);the Priority Academic Program Development of Jiangsu Higher Education Institutions。

摘　　要：Near UV highly luminescent colloidal Cs_(2)NaBiCl_(6)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 Cs_(2)NaBiCl_(6)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 Cs_(2)NaBi_(0.75)Sb_(0.25)Cl_(6)showed a high PLQY of 46.57%,and both the powder and the colloidal solution exhibited superior stability.

关 键 词：Perovskite nanocrystals Ligand-assisted reprecipitation Stability Cs_(2)NaBiCl_(6) Cs_(2)NaBi_(0.75)Sb_(0.25)Cl_(6) 

分 类 号：O641.4[理学—物理化学] TB383.1[理学—化学]