Optical response and luminescence characteristics of Sm3+ and Tb3+/sm3+ co-doped potassium-fluoro-phosphate glasses for reddish-orange lighting applications

被引：36
|
作者：
Kumar, K. Anil [1 ]
Babu, S. [1 ]
Prasad, V. Reddy [1 ]
Damodaraiah, S. [1 ]
Ratnakaram, Y. C. [1 ]
机构：
[1] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
来源：
MATERIALS RESEARCH BULLETIN | 2017年 / 90卷
关键词：
Potassium-fluoro-phosphate glasses; Sm3+/Tb3+; Judd-Ofelt theory; Emission spectra; Reddish-orange emission; ENERGY-TRANSFER MECHANISM; IONS; SPECTRA; INTENSITIES; ABSORPTION; BEHAVIOR; CUO;
D O I：
10.1016/j.materresbull.2017.01.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Potassium-fluoro-phosphate (KFP) glasses singly doped with different concentrations of samarium (0.1, 0.3, 0.5, 1.0, 1.5 and 2.0 mol%) and co-doped with Tb3+(0.1, 0.5, 1.0 mol%) were prepared, and their luminescence properties were investigated. Optical transition properties of Sm3+ ions were evaluated by using Judd-Ofelt theory. Various emission properties were studied from luminescence spectra. Reddish orange emission of Sm3+ exhibits mainly by (4)G(5/2) level to H-6(7/2) located at 600 nm. Concentration quenching and energy transfer were observed from fluorescence spectra and decay curves respectively. The non-exponential decay profiles were analyzed Inokuti-Hirayama model (I-H). From this model, various energy transfer kinetic parameters were also calculated and analyzed. By co-doping with Tb3+, energy transfer from Tb3+ to Sm3+ takes place and contributes to enhancement in emission intensity and intense reddish-orange emission was obtained. The optimized properties of the Tb3+/Sm3+ co-doped KFP glasses indicate that these glasses can be used as luminescent materials. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：31 / 40
页数：10
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