Anomalous photoluminescence from a K2LiInF6:Mn4+ phosphor

Yiwen Zhu; Lin Huang; Mikhail. G. Brik; Yinyue Li; Jiasong Zhong; Jing Wang; Ka-Leung Wong

doi:10.1039/d0tc01799j

Anomalous photoluminescence from a K₂LiInF₆:Mn⁴⁺phosphor

Yiwen Zhu, Lin Huang, Mikhail. G. Brik, Yinyue Li, Jiasong Zhong^*, Jing Wang^*, Ka-Leung Wong^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

29 Citations (Scopus)

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. This journal is © The Royal Society of Chemistry 2020.

Original language	English
Pages (from-to)	8085-8090
Journal	Journal of Materials Chemistry C
Volume	8
Issue number	24
Online published	15 May 2020
DOIs	https://doi.org/10.1039/d0tc01799j
Publication status	Published - 28 Jun 2020
Externally published	Yes

Funding

This work was financially supported by the NSFC (51902076). The work was also supported by the Zhejiang Provincial Natural Science Foundation of China (LQ19E020008). This work was also financially supported by the NSFC (51772336, 51702373 and 51961145101), the Joint Funds of the National Natural Science Foundation of China and Yunnan Province (U1902222), the National Key R&D Program of China (2018YFB0406800 and 2018YFB0406801), the Key-Area Research and Development Program of GuangDong Province (2019B010926001) and the Guangzhou Science & Technology Project (201807010104 and 201802020033). M. G. Brik acknowledges the support from the Chongqing Recruitment Program for 100 Overseas Innovative Talents (Grant No. 2015013), the Program for the Foreign Experts (Grant No. W2017011) and the Wenfeng High-end Talents Project (Grant No. W2016-01) offered by the Chongqing University of Posts and Telecommunications (CQUPT), the Estonian Research Council grant PUT PRG111, the European Regional Development Fund (TK141) and the NCN project 2018/31/B/ST4/00924. Financial support from the Hong Kong Research Grants Council (Grant HKBU 12300318) is gratefully appreciated.

RGC Funding Information

RGC-funded

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Cite this

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title = "Anomalous photoluminescence from a K2LiInF6:Mn4+ phosphor",

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. This journal is {\textcopyright} The Royal Society of Chemistry 2020.",

author = "Yiwen Zhu and Lin Huang and Brik, {Mikhail. G.} and Yinyue Li and Jiasong Zhong and Jing Wang and Ka-Leung Wong",

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T1 - Anomalous photoluminescence from a K2LiInF6:Mn4+ phosphor

AU - Zhu, Yiwen

AU - Huang, Lin

AU - Brik, Mikhail. G.

AU - Li, Yinyue

AU - Zhong, Jiasong

AU - Wang, Jing

AU - Wong, Ka-Leung

PY - 2020/6/28

Y1 - 2020/6/28

N2 - 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. This journal is © The Royal Society of Chemistry 2020.

AB - 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. This journal is © The Royal Society of Chemistry 2020.

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DO - 10.1039/d0tc01799j

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