Novel Mn4+ doped Ca2GdSbO6 red-emitting phosphor: A potential color converter for light-emitting diodes

被引：48

作者：

Liang, Jia ^{[1
]}

Devakumar, Balaji ^{[1
]}

Sun, Liangling ^{[1
]}

Sun, Qi ^{[1
]}

Wang, Shaoying ^{[1
]}

Huang, Xiaoyong ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Taiyuan, Shanxi, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Light-emitting diodes; luminescence properties; Mn4+ ions; Red-emitting phosphors; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; QUANTUM EFFICIENCY; THERMAL-STABILITY; SITE OCCUPANCY; REDEMITTING PHOSPHOR; EMISSION; BAND;

D O I：

10.1111/jace.16353

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

As potential color converter towards white/red light-emitting diodes, novel Ca2GdSbO6:Mn4+ phosphors with excellent optical performances were prepared by a conventional solid-state reaction route. The as-prepared phosphors with monoclinic crystal system had abundant [SbO6] octahedrons for Mn4+ ions to occupy and stably exist. With an excitation of 356 nm, an intense red emission peaking at 676 nm attributed to E-2(g)->(4)A(2g) transition of Mn4+ ions can be observed in the emission spectrum. The critical concentration of Mn4+ ions was found to be 0.6 mol% and the concentration quenching mechanism was also discussed in detail. Importantly, the Ca2GdSbO6:0.6%Mn4+ phosphors exhibited a high internal quantum efficiency of 38.9%.

引用

页码：4730 / 4736

页数：7

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