光致发光
材料科学
量子产额
共晶体系
纳米晶
钙钛矿(结构)
配体(生物化学)
化学工程
溶剂
半最大全宽
纳米技术
有机化学
荧光
化学
合金
光电子学
复合材料
光学
生物化学
物理
受体
工程类
作者
Heng Lu,Xiaohong Tan,Guobin Huang,Shaoru Wu,Yanmei Zhou,Junying Zhang,Qiaowen Zheng,Tianju Chen,Feiming Li,Zhixiong Cai,Jingbin Zeng,Maosheng Zhang
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:14 (46): 17222-17229
被引量:5
摘要
Perovskite nanocrystals (PNCs) have attracted widespread attention as promising materials for the optoelectronic field due to their remarkable photophysical properties and structural tunability. However, their poor stability and the use of toxic organic solvents in the preparation process have severely restricted their practical applications. Herein, a facile, rapid and toxic organic solvent-free synthesis strategy of CsPbBr3 PNCs was developed for the first time via the ligand-assisted reprecipitation (LARP) method using natural deep eutectic solvents (NADESs) as solvents and surface ligands. In this method, the NADESs not only functioned as solvents for green synthesis, but also served simultaneously as surface ligands of CsPbBr3 PNCs to significantly improve their optical properties and stability. The as-synthesized CsPbBr3 PNCs exhibited high photoluminescence quantum yield (PLQY, ∼96.8%), narrow full width at half-maximum (FWHM, ∼18.8 nm) and a high stability that retained 82.9% of PL intensity after 70 days. This work provides a new strategy for the green synthesis of PNCs, which promises feasibility for the industrial large-scale synthesis of high-quality PNCs.
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