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

被引：51

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

页码：5673 / 5680

页数：8

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