Electron-phonon coupling properties and energy transfer in NaY(WO4)2:Eu3+ phosphor

被引：24

作者：

Liu, Ting ^{[1
]}

Meng, Qingyu ^{[1
]}

Sun, Wenjun ^{[1
]}

机构：

[1] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 647卷

基金：

黑龙江省自然科学基金;

关键词：

Eu3+; Electron-phonon coupling; Energy transfer; Refraction index; LUMINESCENT PROPERTIES; PHOTOLUMINESCENCE PROPERTIES; HYDROTHERMAL SYNTHESIS; EU3+; EMISSION; INTENSITIES; RED;

D O I：

10.1016/j.jallcom.2015.05.256

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

NaY(WO4)(2) phosphors with various Eu3+ concentrations were prepared via a molten salt method. The crystal structure and morphology of the phosphors were characterized by means of XRD and field emission scanning electron microscope. The excitation spectra and emission spectra were measured. The energy transfer type between Eu3+ was proved. What's more, the critical energy transfer distance (Rc) and Huang-Rays factor were calculated. The self-generated quenching process of Eu3+ was explained based on Auzel's model, and the intrinsic radiative transition lifetime for D-5(0) level was confirmed. The energy transfer rate between Eu3+ ions was derived on the basis of the fluorescence lifetime. Finally, the refractive index n was calculated. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：830 / 836

页数：7

共 33 条

[1] A fundamental self-generated quenching center for lanthanide-doped high-purity solids [J].