Photoluminescence properties and energy transfer of NaY(MoO4)2:R (R = Sm3+ /Bi3+, Tb3+ /Bi3+, Sm3+ /Tb3+) phosphors

被引：59
|
作者：
Liao, Changlin [1 ]
Cao, Renping [1 ]
Wang, Wudi [1 ]
Hu, Wen [1 ]
Zheng, Guotai [1 ]
Luo, Zhiyang [2 ]
Liu, Pan [3 ]
机构：
[1] Jinggangshan Univ, Coll Math & Phys, Jian 343009, Jiangxi, Peoples R China
[2] Jinggangshan Univ, Coll Mech Manufacture & Automat, Jian 343009, Jiangxi, Peoples R China
[3] Jinggangshan Univ, Sci Res Off, Jian 343009, Jiangxi, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2018年 / 97卷
基金：
中国国家自然科学基金;
关键词：
Optical materials; Luminescence; Optical properties; Phosphors; LUMINESCENCE PROPERTIES; DOWN-CONVERSION; ELECTRONIC-STRUCTURE; RED PHOTOCONVERSION; EMISSION PROPERTIES; TUNABLE EMISSION; GLASSES; MICROCRYSTALS; DYNAMICS;
D O I：
10.1016/j.materresbull.2017.09.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NaY(MoO4)(2):R (R = Sm3+/Bi3+, Tb3+/Bi3+, Sm3+/Tb3+) phosphors are synthesized by solid-state reaction method in air. The crystal structures, excitation and emission spectra, luminescence properties, the lifetimes, and the dopant concentration influences are investigated. The emission intensity of activators Sm3+ and Tb3+ can be enhanced similar to 3.04 and 1.64 times due to energy transfer (ET) from Bi3+ to Sm3+/Tb3+. NaY(MoO4)(2):Sm3+, Tb3+ phosphor with excitation 300 nm shows a tunable emission from red to yellow with change Sm3+ or Tb3+ ion concentration. Emission intensity of NaY(MoO4)(2):Sm3+ phosphor can be enhanced similar to 2.24 times via co-doping Tb3+ ion owing to ET from Tb3+ to Sm3+ ions. The results indicate that ET between sensitizer and activator (Bi3+ -> Tb3+, Bi3+ -> Sm3+, and Tb3+ -> Sm3+) is beneficial to improve the luminescence properties of activator (Sm3+ and Tb3+). ET and luminous meachanisms are explained by energy level diagrams of Bi3+, Tb3+, and Sm3+ ions.
引用
收藏
页码：490 / 496
页数：7
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