Issue 24, 2020
From the journal:

Journal of Materials Chemistry C

Anomalous photoluminescence from a K2LiInF6:Mn4+ phosphor

Yiwen Zhu,a   Lin Huang,b   Mikhail. G. Brik,cde   Yinyue Li, ORCID logo a   Jiasong Zhong, ORCID logo *a   Jing Wang ORCID logo *b  and  Ka-Leung Wong ORCID logo *f  

* Corresponding authors

a College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou, P. R. China
E-mail: ywzhu@hdu.edu.cn

b School of Chemistry, School of Materials Science and Engineering, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou, P. R. China
E-mail: ceswj@mail.sysu.edu.cn

c College of Sciences & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China

d Institute of Physics, University of Tartu, W. Ostwald Str. 1, Tartu 50411, Estonia

e Institute of Physics, Jan Długosz University, Armii Krajowej 13/15, PL-42200 Częstochowa, Poland

f Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, P. R. China
E-mail: klwong@hkbu.edu.hk

Abstract

A novel red emitting fluoride phosphor K2LiInF6:Mn4+ was synthesized by a cation exchange route. An increased blue shift in its emission spectrum was observed. This anomalous phenomenon can be attributed to the nephelauxetic effect and different interionic distances between the cations and ligands. Dependence of the emission intensity of Mn4+ on its concentration was investigated to optimize the luminescence properties of the prepared phosphors and the structure and morphology of the phosphor are studied in detail. The exchange charge model of the crystal field was used to calculate the crystal field parameters. The temperature-dependent emission spectra were measured to ascertain the thermal stability and the chromaticity shift of KLIFM.

Graphical abstract: Anomalous photoluminescence from a K2LiInF6:Mn4+ phosphor

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Article information

DOI
https://doi.org/10.1039/D0TC01799J
Article type
Paper
Submitted
10 Apr 2020
Accepted
06 May 2020
First published
15 May 2020

J. Mater. Chem. C, 2020,8, 8085-8090

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Anomalous photoluminescence from a K2LiInF6:Mn4+ phosphor

Y. Zhu, L. Huang, Mikhail. G. Brik, Y. Li, J. Zhong, J. Wang and K. Wong, J. Mater. Chem. C, 2020, 8, 8085 DOI: 10.1039/D0TC01799J

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