Synthesis and luminescence properties of Y2Ti2O7: Tm3+ phosphor

被引：0

作者：

You, Wei-Xiong ^{[1
]}

Sun, Shen-Lei ^{[1
]}

Xiao, Zong-Liang ^{[1
]}

Lai, Feng-Qin ^{[1
]}

Jiang, Hong-Hui ^{[1
]}

Wang, Chun-Xiang ^{[1
]}

机构：

[1] School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2015年 / 36卷 / 03期

关键词：

Concentration quenching; Sol-gel method; Y[!sub]2[!/sub]Ti[!sub]2[!/sub]O[!sub]7[!/sub]: Tm[!sup]3+[!/sup;

D O I：

10.3788/fgxb20153603.0267

中图分类号：

学科分类号：

摘要：

Y2Ti2O7: xTm(x=0.005, 0.01, 0.03, 0.05) phosphors were prepared by sol-gel method and sintered at different temperatures. The structure, morphologies, and luminescence properties of samples were characterized by X-ray diffraction (XRD), TEM, and fluorescence spectrophotometer, respectively. The XRD patterns indicate that the structure of samples belongs to pyrochlore structure, and is not changed by the doping of Tm3+. Blue emissions centered at 456 nm, corresponding to 1D2→ 3F4 transition of Tm3+, are detected under 361 nm excitation. The best luminescence performance is derived when the sintering temperature is 1 000℃ for Y2Ti2O7: 0.01Tm3+. Furthermore, the emission intensity at 456 nm increases and then decreases with the increasing of Tm3+ concentration. The most intense emission is obtained when the mole fraction of Tm3+ is 1%, which indicates that the concentration quenching happens when the mole fraction of Tm3+ exceeds 1%. ©, 2015, Chines Academy of Sciences. All right reserved.

引用

页码：267 / 271

页数：4

共 21 条

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