文献类型：期刊文献

英文题名：Room-Temperature Synthesis of Mn-Doped Cesium Lead Halide Quantum Dots with High Mn Substitution Ratio

作者：Zhu, Jingrun[1];Yang, Xiaoling[1];Zhu, Yihua[1];Wang, Yuanwei[1];Cai, Jin[1];Shen, Jianhua[1];Sun, Luyi[2,3];Li, Chunzhong[1]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Univ Connecticut, Inst Mat Sci, Dept Chem, Storrs, CT 06269 USA;[3]Univ Connecticut, Inst Mat Sci, Biomol Engn & Polymer Program, Storrs, CT 06269 USA

年份：2017

卷号：8

期号：17

起止页码：4167

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY LETTERS

收录：;EI(收录号：20173704155657);WOS:【SCI-EXPANDED(收录号:WOS:000410600600032)】；

基金：This work was supported by the National Natural Science Foundation of China (21322607, 21406072, 21471056, 21676093, and 91534202), the Basic Research Program of Shanghai (15JC1401300), the Key Scientific and Technological Program of Shanghai (14521100800), the International Science and Technology Cooperation Program of China (2015DFA51220), and the Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：Nanocrystals - Manganese compounds - Density functional theory - Lead compounds - Atmospheric temperature - Cesium compounds - Room temperature - Semiconductor quantum dots - Bromine compounds - Optical properties

摘要：Here we report the room-temperature, atmospheric synthesis of Mn-doped cesium lead halide (CsPbX3) perovskite quantum dots (QDs). The synthesis is performed without any sort of protection, and the dual-color emission mechanism is revealed by density functional theory. The Mn concentration reaches a maximum atomic percentage of 37.73 at%, which is significantly higher in comparison to those achieved in earlier reports via high temperature hot injection method. The optical properties of as prepared nanocrystals (NCs) remain consistent even after several months. Therefore, red-orange LEDs were fabricated by coating the composite of PS and as-prepared QDs onto ultraviolet LED chips. Additionally, the present approach may open up new methods for doping other ions in CsPbX3 QDs under room temperature, the capability of which is essential for applications such as memristors and other devices.