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La2Ce2O7∶Ho3+ / Yb3+陶瓷的荧光温度传感性能研究

Fluorescence temperature sensing performance of La2Ce2O7∶Ho3+ / Yb3+ ceramics

中文摘要:

为研究La2Ce2O7∶Ho3+ / Yb3+陶瓷的荧光温度传感性能，采用高温固相反应法制备该材料，在 La2Ce2O7晶格中，使Ho3+和Yb3+都取代La3+的位置，其中，Ho3+离子浓度为0. 05% at. %，Yb3+离子浓度在10% ~ 18% at. %范围内。在980 nm波长的激光激发下，检测到上转换（Up?conversion， UC）绿光的强度在550 nm处达到峰值，红光强度在666 nm处达到峰值。当Ho3+和Yb3+的掺杂浓度分别为0. 05% at. %和14% at. %时，UC发射强度最强。研究了La2Ce2O7∶Ho3+ / Yb3+陶瓷在303 ~ 483 K温度范围内的温度传感性能，在303 K温度条件下得到最高绝对灵敏度（Sa）为0. 002 8 K-1，在303 K 温度条件下得到最高相对灵敏度（Sr）为0. 005 4 K-1，表明 La2Ce2O7∶Ho3+ / Yb3+陶瓷可以作为潜在的远程温度传感器候选材料。

英文摘要:

La2Ce2O7 ceramics co?activated by Ho3+ and Yb3+ were synthesized by high temperature solid?state reac? tion. Both Ho3+ and Yb3+ substitute the La3+ sites in the La2Ce2O7 lattice, where the Ho3+ concentration is 0.05% at.% and the Yb3+ concentration varies in the range of 10% ~ 18% at.%. Pumped by a 980 nm laser, the up?conversion (UC) green emission peaked at 550 nm and the red emission at 666 nm were detected. When the doping concentration of Ho3+ and Yb3+ are 0.05% at.% and 14% at.%, respectively, the UC emission reaches the strongest intensity. Temperature sensing performance of La2Ce2O7∶Ho3+ / Yb3+ was studied in the temperature range of 303 ~ 483 K, the highest absolute sensitivity (Sa) is 0.002 8 K-1 at 303 K and the highest relative sensitivity (Sr) is 0.005 4 K-1 at 303 K. The results show that the ce? ramics La2Ce2O7∶Ho3+ / Yb3+ can be a potential candidate for remote temperature sensors.

作者	单位
潮佳梦	（上海理工大学光电信息与计算机工程学院，上海 200093）
娄文慧	（上海理工大学光电信息与计算机工程学院，上海 200093）
林辉*	（上海理工大学光电信息与计算机工程学院，上海 200093）

中文关键词: 光学温度传感上转换发光远程温度传感荧光分支比

英文关键词:optical temperature sensing up ⁃ conversion emission remote temperature sensing fluorescence branching ratio

基金项目:

DOI：10.11823/j.issn.1674-5795.2024.02.06

引用本文：潮佳梦,娄文慧,林辉*.La2Ce2O7∶Ho3+ / Yb3+陶瓷的荧光温度传感性能研究[J].计测技术,2024,(2):.

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