| Flux and concentration effect on Eu^3＋ doped Gd2（MoO4）3 phosphor |
| |
| 引用本文： | 程丽红,仲海洋,孙佳石,张翔清,彭勇,于涛,赵晓霞.Flux and concentration effect on Eu^3＋ doped Gd2（MoO4）3 phosphor[J].中国稀土学报(英文版),2008,26(2):211-214. |
| |
| 作者姓名： | 程丽红 仲海洋 孙佳石 张翔清 彭勇 于涛 赵晓霞 |
| |
| 作者单位： | CHENG Lihong （Department of Physics, Dalian Maritime University, Dalian 116026, China） ;
ZHONG Haiyang （Department of Physics, Dalian Maritime University, Dalian 116026, China） ;
SUN Jiashi（Department of Physics, Dalian Maritime University, Dalian 116026, China） ;
ZHANG Xiangqing（Department of Physics, Dalian Maritime University, Dalian 116026, China） ;
PENG Yong （Department of Physics, Dalian Maritime University, Dalian 116026, China） ;
YU Tao （Department of Physics, Dalian Maritime University, Dalian 116026, China） ;
ZHAO Xiaoxia （Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China） ; |
| |
| 基金项目： | 国家自然科学基金，the Joint Program of NSFC (National Natural Science Foundation of China)-GACAC (General Administration of Civil Aviation of China)，吉林省教育厅自然科学基金，Outstanding Young People Foundation of Jilin Province |
| |
| 摘 要： | A novel red emitting phosphor Gd2（MoO4）3：Eu^3＋ was prepared by solid reaction, using Gd2O3, Eu2O3 and WO3 as starting matedals and NH4F as flux. The effects of flux content and Eu^3＋ concentration on the crystal structure, morphology and luminescent properties were investigated using XRD, SEM and fluorescent spectrum measurement. The XRD patterns showed that the resultants had the monoclinic structure. With the increase in flux amount, their crystallization significantly improved. The SEM images indicated that the mean size of the phosphor particles was around 2 μm, and agglomeration of the phosphor particles appeared while introducing higher flux amount. The excitation spectra exhibited more intense f-f transitions originating from ground state 7^F0 to upper states 5^L6 and 5^D2 than the charge transfer band. The concentration quenching of Eu^3＋ emission indicated that energy transfer from Eu^3＋ to molybdate host existed even at lower Eu^3＋ concentration.
|
| 关 键 词： | 稀土 荧光体 X线衍射 晶体结构 |
| 收稿时间： | 10 October 2007 |
Flux and concentration effect on Eu doped Gd2(MoO4)3 phosphor |
| |
| Lihong CHENG, Haiyang ZHONG, Jiashi SUN, Xiangqing ZHANG, Yong PENG, Tao YU,Xiaoxia ZHAO.Flux and concentration effect on Eu doped Gd2(MoO4)3 phosphor[J].Journal of Rare Earths,2008,26(2):211-214. |
| |
| Authors: | Lihong CHENG Haiyang ZHONG Jiashi SUN Xiangqing ZHANG Yong PENG Tao YU Xiaoxia ZHAO |
| |
| Affiliation: | [1]Department of Physics, Dalian Maritime University, Dalian 116026, China [2]Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China |
| |
| Abstract: | A novel red emitting phosphor Gd2(MoO4)3:Eu3 was prepared by solid reaction, using Gd2O3, Eu2O3 and WO3 as starting materials and NH4F as flux. The effects of flux content and Eu3 concentration on the crystal structure, morphology and luminescent properties were investigated using XRD, SEM and fluorescent spectrum measurement. The XRD patterns showed that the resultants had the monoclinic structure. With the increase in flux amount, their crystallization significantly improved. The SEM images indicated that the mean size of the phosphor particles was around 2 μm, and agglomeration of the phosphor particles appeared while introducing higher flux amount. The excitation spectra exhibited more intense f-f transitions originating from ground state 7F0 to upper states 5L6 and 5D2 than the charge transfer band. The concentration quenching of Eu3 emission indicated that energy transfer from Eu3 to molybdate host existed even at lower Eu3 concentration. |
| |
| Keywords: | Eu X-ray diffraction luminescence phosphors crystal structure rare earths |
| 本文献已被 维普 万方数据 ScienceDirect 等数据库收录！ |
|
