Investigation on the efficient up-conversion luminescence and temperature sensing properties of the Li+/Er3+/Yb3+:Gd2O3 phosphor
Investigation on the efficient up-conversion luminescence and temperature sensing properties of the Li+/Er3+/Yb3+:Gd2O3 phosphor
复制标题
DOI：
10.1016/j.ijleo.2020.166155
复制
发表时间：
2021-02-01
期刊：
影响因子：
3.1
通讯作者：
Zhang, Yuhong
中科院分区：
文献类型：
--
作者：
Liu, Hang;He, Xin;Zhang, Yuhong
本文采用溶胶-凝胶法制备了Gd_2O_3：Er3+/Yb3+/Li+样品。研究了上转换(UC)荧光和温度传感特性。掺杂Li+离子增强了发光强度，并在Li+掺杂浓度为5%时达到最大值。用荧光强度率(FIR)技术研究了Er3+离子的温度传感特性。对于非热耦合能级(H-2(11/2)和F-4(9/2))，获得了高灵敏度(S-A)值，在573K时为0.02K-1。结果表明，Gd2O3：Er3+/Yb3+/Li+荧光粉有可能成为高温检测的候选材料。还观察到了基于激光诱导的光加热效应，在泵浦功率为1940 mW时，计算的温度约为373K。这表明Gd_2O_3：Er3+/Yb3+/Li+荧光粉可以用于医疗领域。
In this paper, the Gd2O3: Er3+/Yb3+/Li+ samples are prepared by sol-gel process. The upconversion(UC) fluorescence and temperature sensing properties are studied. The UC emission intensities are enhanced by endoping Li+ ions and reach the maximum value at the 5 mol% doping concentrations of Li+ ions. The temperature sensing characteristics of Er3+ ions are studied with the fluorescence intensity rate(FIR) technology. A high sensitivity(S-A) value with 0.02 K-1 at 573 K for non-thermally coupled levels (H-2(11/2) and F-4(9/2)) is obtained. The results demonstrate that the Gd2O3: Er3+/Yb3+/Li+ phosphor could be a candidate for high temperature detection applications. The optical heating effect based on the laser inducing is also observed, and the temperature is calculated about similar to 373 K at pump power 1940 mW. It indicates the Gd2O3: Er3+/Yb3+/Li+ phosphor may be used for therapeutic applications.