Photoluminescence properties of a novel red fluoride K2LiGaF6:Mn4+ nanophosphor

Yiwen Zhu; Jinbo Yu; Yong Liu; Mikhail G. Brik; Lin Huang; Tongtong Xuan; Jing Wang

doi:10.1039/C7RA05635D

Photoluminescence properties of a novel red fluoride K₂LiGaF₆:Mn⁴⁺ nanophosphor†

Yiwen Zhu,^a Jinbo Yu,^a Yong Liu,^a Mikhail G. Brik,^bcd Lin Huang,^a Tongtong Xuan

^a and Jing Wang

*^a

Author affiliations

* Corresponding authors

^a School of Chemistry, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou, P. R. China
E-mail: ceswj@mail.sysu.edu.cn

^b College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, 2 Chongwen Road, Nan'an District, Chongqing 400065, P. R. China

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

^d Institute of Physics, Jan Dlugosz University, Armii Krajowej 13/15, Czestochowa, Poland

Abstract

Red K₂LiGaF₆:Mn⁴⁺ phosphors have been synthesized by the facile cation-exchange method. To optimize the optical properties, the phosphors were synthesized by using different reaction conditions. The highest luminescence intensity was increased 3.6 times for the Mn concentration of 1%, reaction temperature of 20 °C, and reaction time of 1 h. Replacement of the trivalent Al by Ga resulted in K₂LiGaF₆:Mn⁴⁺ having better photoluminescence properties than K₂LiAlF₆:Mn⁴⁺. Furthermore, the studies of the temperature-dependent emission intensity of the phosphors confirmed their good thermal stability, making them promising red phosphor candidates for white light-emitting diodes.

This article is part of the themed collection: 2017-2018 Top Cited Research from China

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Article information

DOI: https://doi.org/10.1039/C7RA05635D
Article type: Paper
Submitted: 18 May 2017
Accepted: 07 Jun 2017
First published: 14 Jun 2017
This article is Open Access

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RSC Adv., 2017,7, 30588-30593

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Photoluminescence properties of a novel red fluoride K₂LiGaF₆:Mn⁴⁺ nanophosphor

Y. Zhu, J. Yu, Y. Liu, M. G. Brik, L. Huang, T. Xuan and J. Wang, RSC Adv., 2017, 7, 30588 DOI: 10.1039/C7RA05635D

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