Facile synthesis, morphology and photoluminescence of a novel red fluoride nanophosphor K2NaAlF6:Mn4+

被引：113

作者：

Zhu Y. ^{[1
]}

Cao L. ^{[1
]}

Brik M.G. ^{[2
,3
,4
]}

Zhang X. ^{[1
]}

Huang L. ^{[1
]}

Xuan T. ^{[1
]}

Wang J. ^{[1
,5
]}

机构：

[1] Ministry of Education, Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou Guangdong

[2] College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, 2 Chongwen Road, Nan'an District, Chongqing

[3] Institute of Physics, University of Tartu, W. Ostwald Str. 1, Tartu

[4] Institute of Physics, Jan Dlugosz University, Armii Krajowej 13/15, Czestochowa

[5] Guzhen Productivity Promotion Center, Zhongshan

来源：

Wang, Jing (ceswj@mail.sysu.edu.cn) | 2017年 / Royal Society of Chemistry卷 / 05期

关键词：

Fluorine compounds - Metals - Aluminum alloys - Photoluminescence - Positive ions - Metal ions - Phosphors;

D O I：

10.1039/c7tc01074e

中图分类号：

学科分类号：

摘要：

A novel red-emitting fluoride phosphor, K2NaAlF6:Mn4+, with nanoscale particle size was synthesized via a cation exchange route. This phosphor absorbs UV and blue light and emits red light at about 630 nm; thus, it has been regarded as an ideal red phosphor for WLEDs. The reaction parameters were systematically investigated and an optimized sample was obtained. K2NaAlF6:Mn4+ showed better photoluminescence properties and its emission wavelength was blue shifted with respect to that of K2LiAlF6:Mn4+ due to differences in the neighbouring alkali metal ions and different distances between the cation and the ligands. These results are in agreement with the trend determined by the recently introduced parameter β1, which describes the energy of the 2Eg → 4A2g transition as a function of the nephelauxetic effect. Finally, these results could further contribute to the optimization of red-emitting phosphors based on Mn4+ ions. © 2017 The Royal Society of Chemistry.

引用

页码：6420 / 6426

页数：6

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