Postsynthetic, Reversible Cation Exchange between Pb2+ and Mn2+ in Cesium Lead Chloride Perovskite Nanocrystals | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

7085648

Reference Type

Journal Article

Title

Postsynthetic, Reversible Cation Exchange between Pb2+ and Mn2+ in Cesium Lead Chloride Perovskite Nanocrystals

Author(s)

Gao, Di; Zhao, S; Qiao, Bo; Xu, Z; Song, D; Song, P; Liang, Z; Shen, Z; Cao, J; Zhang, J; ,

Year

2017

Is Peer Reviewed?

Yes

Journal

Journal of Physical Chemistry C
ISSN: 1932-7447
EISSN: 1932-7455

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

Page Numbers

20387-20395

DOI

10.1021/acs.jpcc.7b06929

Web of Science Id

WOS:000411772200036

Abstract

CsPbX3 (X = Cl, Br, I) perovskite nanocrystals (NCs) are promising materials due to their excellent optoelectronic properties. In this work, we show a successful partial and reversible cation exchange reaction between Pb and Mn in both CsPbCl3 NCs and CsMnCl3 NCs systems to yield luminescent CsPb(1-x)MnxCl(3) NCs. By adjusting the reaction time, the photoluminescence from the exciton emission of CsPbCl3 and the electron transition of Mn2+ can be tuned gradually. This work highlights the feasibility of a postsynthetic interconversion of Pb2+ and Mn2+ in cesium lead chloride perovskite nanocrystals, which enables a new strategy to reduce the toxicity and adjust the emissions of CsPbCl3 NCs. In the end, we also discuss the plausible mechanisms for cation exchange in perovskite materials.