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

被引：57

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

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页码：490 / 496

页数：7

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