Enhanced photoluminescence and stability of ZnSe microspheres/Cs4PbBr6 microcrystals/CsPbBr3 nanocrystals composites

作     者：Chao Zhang Tingting Li Lei Pu Weijia Wen Xiangdong Luo Lijuan Zhao Chao Zhang;Tingting Li;Lei Pu;Weijia Wen;Xiangdong Luo;Lijuan Zhao

作者机构：Materials Genome InstituteShanghai UniversityShanghai 200444China Jiangsu Key Laboratory of ASIC DesignNantong UniversityNantong 226019China State Key Laboratory of Transducer TechnologyShanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第9期

页      面：2499-2502页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by National Natural Science Foundation of China(Nos.61927806,61474067) the State Key Laboratory of Transducer Technology of China(No.SKT1806) 

主　　题：Dual-phase perovskites Ternary complex Supersaturated recrystallization Photoluminescence Passivation Optoelectronic 

摘      要：A ternary complex combining dual-phase perovskites-Cs4PbBr6/CsPbBr3(DP-CPB) with ZnSe micropshere s(ZnSe-DP-CPB) was succes s fully prepared using supersaturated recrystallization technique at room *** was showed that the DP-CPB composites were partially embedded in ZnSe microsphere composed with ZnSe *** light absorption range of ZnSe-DP-CPB composites was extended from visible to near infrared *** enhanced luminescence from ZnSe-DP-CPB composite was observed and the excitation power-dependent photoluminescence showed that the recombination involves *** recombination lifetimes of the ternary composites increased compared with DP-CPB composite,indicating that the non-radiative combination was suppressed which maybe possibly due to the decrease of both bulk and surface defects,owing to the passivation of ZnSe,as well as the suitable band alignments of these three *** ternary complex also showed improved stability of photoluminescence(PL),which opens a newavenue for enhancing the stability of PL and optoelectronic applications for semiconductor-perovskite composites.