La2Ce2O7∶Ho3+/Yb3+陶瓷的荧光温度传感性能研究
Fluorescence temperature sensing performance of La2Ce2O∶7Ho3+/Yb3+ceramics
潮佳梦 1娄文慧 1林辉1
作者信息
- 1. 上海理工大学 光电信息与计算机工程学院,上海 200093
- 折叠
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0.0028 K-1,在303 K温度条件下得到最高相对灵敏度(Sr)为0.0054 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.
Abstract
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 0.0028 K-1 at 303 K and the highest relative sensitivity(Sr)is 0.0054 K-1 at 303 K.The results show that the ce-ramics La2Ce2O7∶Ho3+/Yb3+can be a potential candidate for remote temperature sensors.
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Key words
optical temperature sensing/up-conversion emission/remote temperature sensing/fluorescence branching ratio引用本文复制引用
出版年
2024
NETL
NSTL
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