Luminescent properties and energy transfer mechanism from Tb3+ to Eu3+ in CaMoO4:Tb3+, Eu3+ phosphors

被引：79

作者：

Xiong Jianhui ^{[1
]}

Meng Qingyu ^{[1
]}

Sun Wenjun ^{[1
]}

机构：

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

来源：

JOURNAL OF RARE EARTHS | 2016年 / 34卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Eu3+; Tb3+; luminescent properties; energy transfer; rare earths; HYDROTHERMAL SYNTHESIS; TUNABLE LUMINESCENCE; RIETVELD REFINEMENT; PHOTOLUMINESCENCE; EMISSION; RED; FLUORESCENCE; POWDERS; SYSTEM;

D O I：

10.1016/S1002-0721(16)60022-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of CaMoO4:Tb3+, Eu3+ phosphors were prepared by the method of precipitation. The structure and morphology of the phosphors were characterized by the X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The photoluminescence properties of the prepared products were researched, and the energy transfer from Tb3+ to Eu3+ in CaMoO4 phosphors was studied. By adjusting the doping concentration of Eu3+ ions in CaMoO4:Tb3+, Eu3+ phosphors, the emitting color of the phosphors could be easily tuned from green to red. With Tb3+ doped in the phosphors, the red luminescence of Eu3+ by near UV excitation was significantly enhanced. The energy transfer efficiency, rate and average distance between Tb3+ and Eu3+ in CaMoO4:5% Tb3+, x% Eu3+ (mole percent) phosphors (x= 0.3-10) were calculated. It was found that the interaction type between Tb3+ and Eu3+ was electric dipole-dipole interaction in the phosphors.

引用

页码：251 / 258

页数：8

共 38 条

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