Issue 17, 2020

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

Abstract

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.

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

Supplementary files

Article information

Article type
Communication
Submitted
20 Feb 2020
Accepted
30 Mrz 2020
First published
31 Mrz 2020

J. Mater. Chem. C, 2020,8, 5673-5680

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

Y. Liu, C. Wang, Y. Guo, L. Ma, C. Zhou, Y. Liu, L. Zhu, X. Li, M. Zhang and G. Zhao, J. Mater. Chem. C, 2020, 8, 5673 DOI: 10.1039/D0TC00881H

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