New lead bromide chiral perovskites with ultra-broadband white-light emission

被引：58
作者：
Liu, Yalan [1 ]
Wang, Chao [1 ]
Guo, Yurong [1 ]
Ma, Linlin [1 ]
Zhou, Chenyang [1 ]
Liu, Ya [1 ,2 ]
Zhu, Lina [1 ]
Li, Xiaozeng [1 ]
Zhang, Mingxing [1 ,2 ]
Zhao, Guangjiu [1 ]
机构：
[1] Tianjin Univ, Natl Virtual Simulat Expt Teaching Ctr Chem & Che, Natl Demonstrat Ctr Expt Chem & Chem Engn Educ, Sch Sci,Dept Chem,Tianjin Key Lab Mol Optoelect S, Tianjin 300354, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2020年 / 8卷 / 17期
关键词：
SINGLE ORGANIC-COMPOUND; HALIDE PEROVSKITES; QUANTUM DOTS; METAL;
D O I：
10.1039/d0tc00881h
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Herein, we present for the first time on the synthesis of two chiral perovskites with white-light emission and an achiral perovskite featuring a spectral blueshift. Moreover, the luminescence mechanism of these perovskites is investigated. The direct signals of the free excitons (FEs) and self-trapped excitons (STEs) were observed by performing time-resolved nanosecond transient absorption measurements for our perovskites. This directly verifies that the broad emission indeed originates from FE and STEs. The time-resolved transient emission curves manifest that the long-lived component is assigned to STEs transition and short-lived component is ascribed to FE transition. This study promotes the development of multifunctional applications of chiral white-light emissive perovskites.
引用
收藏
页码：5673 / 5680
页数：8
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