Multifunctional optical thermometry based on the stark sublevels of Er3+ in CaO-Y2O3: Yb3+/Er-3(+)
Multifunctional optical thermometry based on the stark sublevels of Er3+ in CaO-Y2O3: Yb3+/Er-3(+)
复制标题
基于 CaO-Y2O3 中 Er3 明显亚能级的多功能光学测温：Yb3 /Er-3( )
DOI：
10.1111/jace.16939
复制
发表时间：
2020
影响因子：
3.9
通讯作者：
Zhang Jiahua
中科院分区：
文献类型：
--
作者：
Xiang Guotao;Liu Xiaotong;Liu Wen;Wang Bin;Liu Zhen;Jiang Sha;Zhou Xianju;Li Li;Jin Ye;Zhang Jiahua
利用传统的高温固相法制备CaO-Y2 O3，其是用于以低成本制造熔炼钛和钛合金的坩埚材料的潜在候选物。同时，选择Yb 3+离子作为敏化剂，Er 3+离子作为激活剂，分别掺杂到CaO-Y2 O3中，旨在利用荧光强度比（FIR）技术实现钛合金制备过程中的真实的实时光学测温。结果表明，利用Er 3 + 4F 9/2的斯塔克子能级测量温度，可以获得很高的测量精度，最大绝对误差仅为3 K左右。此外，通过分析4 I13/2→ 4 I15/2跃迁对980 nm激发波长泵浦功率的依赖关系，发现激光诱导热效应对利用Er 3 + 4 I13/2斯塔克子能级的FIR进行温度测量几乎没有影响，这意味着可以使用高激发泵浦功率来获得用于光学测温的强NIR发射和良好的信噪比，而不受激光诱导热效应的影响。实验结果表明，CaO-Y2 O3：Yb 3 +/Er 3+是一种性能优良、测量精度高的温度敏感材料。
A conventional high temperature solid state method was utilized to prepare CaO‐Y2O3, which is a potential candidate for manufacturing crucible material to melt titanium and titanium alloys with low cost. Meanwhile, Yb3+ions and Er3+ions were selected as the sensitizers and activators respectively to dope into CaO‐Y2O3, aimed at providing real‐time optical thermometry during the preparation process of titanium alloys realized using fluorescence intensity ratio (FIR) technology. The results reveal that a high measurement precision can be acquired by using the Stark sublevels of Er3+ 4F9/2to measure the temperature with a maximum absolute error of only about 3 K. In addition, by analyzing the dependence of4I13/2→4I15/2transition on pump power of 980 nm excitation wavelength, it was found that the laser‐induced thermal effect has almost no influence on the temperature measurement conducted by using the FIR of the Stark sublevels of Er3+ 4I13/2, which means that a high excitation pump power can be used to obtain strong NIR emission and good signal‐to‐noise ratio for optical thermometry without the influence of the laser‐induced thermal effect. All the results reveal that CaO‐Y2O3: Yb3+/Er3+is an excellent temperature sensing material with high measurement precision.