Structure and luminescence properties of CaWO4-EuMO4 (M = Nb, Ta) solid solution

被引：20

作者：

Zhang, Su ^{[1
]}

Lv, Lingling ^{[1
,2
]}

Wang, Hongjie ^{[2
]}

Zhu, Chongyang ^{[1
,2
]}

Pang, Ran ^{[1
]}

Feng, Jing ^{[1
]}

Li, Da ^{[1
]}

Liu, Guanyu ^{[1
]}

Jiang, Lihong ^{[1
]}

Li, Chengyu ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Applicat Rare Earth Resources, Changchun 130022, Jilin, Peoples R China

[2] Jilin Jianzhu Univ, Mat Sci & Engn, Changchun 130118, Jilin, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2019年 / 211卷

基金：

中国国家自然科学基金;

关键词：

Scheelite; Fergusonite; Solid solution; Eu3+; Luminescent properties; PHOTOLUMINESCENCE PROPERTIES; CHARGE-TRANSFER; CAWO4; RAMAN; CONVERSION; SPECTRA; EU3+; TRANSITIONS; RELAXATION; PHOSPHORS;

D O I：

10.1016/j.jlumin.2019.03.036

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The 0.8CaWO(4)-0.2EuMO(4) (M = Nb, Ta) solid solution and Eu3+, Ta5+ and Nb5+ single doped CaWO4 were prepared by a high-temperature solid state reaction technique. Experiments show that the addition of Nb5+ and Ta5+ can increase the red luminescence of Eu3+ in CaWO4. In this paper, the composition and structure of solid solution were analyzed by X ray diffraction (XRD), Fourier transform infrared spectrum and Raman spectrum analysis. The luminescence properties of the solid solution were studied by means of stable photoluminescent spectra, diffuse reflectance spectra (DRS), fluorescent decay curves and variable temperature spectra. By combining structural analysis, J-O theoretical calculation and experimental results, we believe that the significant improvement of the emission efficiency comes from the decrease of non-radiation relaxation rate.

引用

页码：183 / 192

页数：10

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