Reverse effect of Sm3+ on Ce3+ in Ca2BO3Cl:Ce3+/Tb3+/Sm3+ phosphor: Luminescence, energy transfer and occupation site

被引：15

作者：

Qiu, Keliang ^{[1
]}

Wang, Zhijun ^{[1
]}

Shi, Jianmei ^{[1
]}

Sun, Yili ^{[1
]}

Jiang, Na ^{[1
]}

Tian, Miaomiao ^{[1
]}

Meng, Xiangyu ^{[1
]}

Yang, Zhiping ^{[1
]}

Li, Panlai ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Optelect Informat & Mat, Baoding 071002, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 213卷

基金：

中国国家自然科学基金;

关键词：

Luminescence; Energy transfer; Occupation; Ca2BO3Cl:Ce3+/Tb3+/Sm3+; EMITTING PHOSPHOR; CRYSTALLOGRAPHIC SITES; TUNABLE-EMISSION; COLOR; PHOTOLUMINESCENCE; SUBSTITUTION; ENHANCEMENT; OCCUPANCY; TB3+; EU2+;

D O I：

10.1016/j.saa.2019.01.038

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A series of Ca2BO3Cl:Ce3+, Tb3+, Sm3+ are successfully synthesized by a high temperature solid state reaction. And the crystal structure, luminescence property and energy transfer mechanism of Ce3+/Sm3+, Tb3+/Sm3+ and Ce3+/Tb3+/Sm3+ in Ca2BO3Cl are investigated. There is an interesting phenomenon that the right side of the Ce3+ emission spectra in Ca2BO3Cl: Ce3+, Sm3+ compresses gradually with increasing the Sm3+ concentration. By means of refinement, it can be found that Sm3+ ions are mainly occupied in the Ca-2 sites, because the cell of the Ca-2 lattice is easily occupied. Then, the emission peak2 of Ce3+ in Ca-2 sites occurs to blue shift. While the emission peak1 of Ce3+ in Ca-1 sites is basically stability. However, the emission of Ce3+ in Ca2BO3Cl: Ce3+, Tb3+, Sm3+ have different changes with increasing the Sm3+ concentration that the emission peaks of Ce3+ shift to long wave at first then to short wave and the FWHM remains stability. This can be attributed to the existence of Tb3+. For the energy transfer mechanism, according to Dexter's energy transfer theory and Reisfeld's approximation, the energy transfer process of Ce3+/Sm3+ and Tb3+/Sm3+ should be the dipoledipole interaction. And white emitting phosphor is achieved by the efficient energy transfer. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：141 / 149

页数：9

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