Luminescence intensity enhancement of Eu2+ and Eu3+ by Tb3+ in LiLa9(SiO4)6O2

被引：8
|
作者：
Xie, Mubiao [1 ]
Zhu, Guoxian [1 ]
Pan, Rongkai [1 ]
Li, Dongyu [2 ]
Hou, Dejian [3 ]
机构：
[1] Lingnan Normal Univ, Inst Phys Chem, Sch Chem & Chem Engn, Zhanjiang 524048, Peoples R China
[2] Lingnan Normal Univ, Sch Phys Sci & Technol, Zhanjiang 524048, Peoples R China
[3] Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2016年 / 49卷 / 22期
基金：
中国国家自然科学基金;
关键词：
luminescence; LiLa9(SiO4)(6)O-2; LEDs; Eu; Tb3+; ENERGY-TRANSFER; PHOTOLUMINESCENCE PROPERTIES; PHOSPHOR; SENSITIZATION; EMISSION;
D O I：
10.1088/0022-3727/49/22/225105
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Novel yellow-emitting phosphors LiLa9(SiO4)(6)O-2: 0.05Eu, xTb (x = 0, 0.01, 0.03, 0.02, 0.04, 0.06, 0.08, 0.10) were prepared by a solid-state reaction in a CO-reducing atmosphere. The excitation and emission spectra, and the fluorescence decays were measured and discussed in detail. The fluorescence spectra results of sample LiLa9(SiO4)(6)O-2: 0.05Eu reveal that still a small amount of Eu3+ ions are detected in the LiLa9(SiO4)(6)O-2 host. The introduction of Tb3+ ions can enhance the emission intensity of LiLa9(SiO4)(6)O-2: 0.05Eu under near-ultraviolet light excitation but they do not vary the emission color much. The results indicate that the yellow-emitting phosphors LiLa9(SiO4)(6)O-2: Eu, Tb can be considered as potential phosphor-converted materials for n-UV white light-emitting diodes.
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页数：8
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