Synthesis and luminescent properties of CaLa2ZnO5:Ln (Ln:Tm3+ or Er3+) phosphors

被引：17
作者：
Hussain, Sk. Khaja [1 ]
Raju, G. Seeta Rama [1 ]
Yu, Jae Su [1 ]
机构：
[1] Kyung Hee Univ, Dept Elect & Radio Engn, Yongin 446701, Gyeonggi Do, South Korea
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 10期
关键词：
UP-CONVERSION LUMINESCENCE; TUNABLE EMISSIONS; WHITE; EFFICIENT; STRATEGY; COLOR; BLUE; TM; LN;
D O I：
10.1016/j.ceramint.2015.07.106
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：
Tm3+ or Er3+ ions individually doped CaLa2ZnO5 (CLZO) phosphors were synthesized by a citrate sol-gel method. The phase formation and morphological properties of these phosphors were analyzed by X-ray powder diffraction patterns and scanning electron microscope images, respectively. Under ultraviolet (UV) or near UV light excitations, the luminescence properties of these phosphors were studied as a function of Tm3+ or Er3+ ion concentration. Likewise, cathodoluminescence properties were measured as a function of accelerating voltage and filament current. The CLZO:Tm3+ phosphor revealed the intense blue emission due to the D-1(2) -> F-3(4) electronic transition and the CLZO:Er3+ phosphor exhibited the green emission due to the S-4(3/2) -> I-4(15/2) electronic transition. The decay curves of these phosphors were well fitted to a single exponential function. The chromaticity coordinates were calculated for the synthesized CLZO:Tm3+ and CLZO:Er3+ phosphors. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：13264 / 13270
页数：7
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