Photoluminescence Properties of Ce3+, Dy3+ Doped YGa3(BO3)4 Synthesized by High Temperature Solid State Reactions

被引：0
|
作者：
Sun Y. [1 ,2 ]
Gao Y. [1 ]
Yin C. [1 ]
Cong R. [1 ]
Yang T. [1 ]
机构：
[1] College of Chemistry and Chemical Engineering, Chongqing University, Chongqing
[2] College of Chemistry and Material Science, South-Central Minzu University, Wuhan
来源：
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2020年 / 38卷 / 03期
关键词：
Energy transfer; High temperature solid state reactions; Photoluminescence; Powder X-ray diffraction; Rare earth borates;
D O I：
10.11785/S1000-4343.20200310
中图分类号：
学科分类号：
摘要：
Ce3+ doped and Ce3+, Dy3+ codoped YGa3(BO3)4 were prepared by high temperature solid state reactions. The cell lattice parameters, which were obtained according to powder X-ray diffraction, exhibit a linear correlation with the doping concentration of rare earth. No impurity peaks were observed, and all phosphors were identified to be pure. In the YGa3(BO3)4 host, Ce3+ has strong absorption bands in UV and near UV range, and its emission also locates at the UV range, then it could act as an activator to enhance the Dy3+ white emission. Indeed, there exists an efficient energy transfer from Ce3+ to Dy3+ based on the detailed analyses on photoluminescence spectra. The mechanism of the energy transfer is mainly quadrupole-quadrupole interactions. A high transfer efficiency of 61.58% is achieved in Y0.79Ce0.10Dy0.11Ga3(BO3)4. Under the 273 nm irradiation, the CIE coordinate and correlated color temperature of Y0.89Ce0.1Dy0.01Ga3(BO3)4 is (0.3268, 0.3438) and 5749 K, respectively. © 2020, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.
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页码：405 / 417
页数：12
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