摘要
自参考光学温度计在快速响应和高精度方面显示出竞争优势,因为可以规避一些不可避免的外部因素,如浓度变化、激发波动和检测器损耗。本文报道了Eu/Tb/SnO_(2)纳米晶体共掺杂二氧化硅玻璃的三激活剂光致发光。基于Eu^(3+)(^(5)D_(0)‐7F2跃迁,620 nm)/Eu^(2+)(4f65d‐8S7/2跃迁,434 nm)和Eu^(3+)(^(5)D_(0)‐7F2跃迁,620 nm)/Tb^(3+)(5D4‐7F5跃迁,542 nm)的非热耦合能级的温度依赖性荧光强度比可用于298~773 K宽范围内的自参考温度探测。在773 K时,最大相对热灵敏度Sr可达2.3%·K^(-1),高于大多数Eu/Tb共掺杂材料。这项工作将为三重激活剂的自参考光学温度测量提供一种新的Eu/Tb共掺杂材料。
Self-referencing optical thermometers have shown competitive advantages on fast response and high accuracy as they can avoid inevitable external factors like concentration change,excitation fluctuation,and detector loss.Herein,we report the triple-emitting photoluminescence of Eu/Tb/SnO_(2)nanocrystals co-doped silica glasses.The temperature-dependent fluorescence intensity ratio of non-thermal coupled levels of Eu^(3+)(^(5)D_(0)-7F2 transition,620 nm)/Eu^(2+)(4f65d-8S7/2 transition,434 nm)and Eu^(3+)(^(5)D_(0)-7F2 transition,620 nm)/Tb^(3+)(^(5)D_(4)-7F5 transition,542 nm)can be used for self-referencing temperature probing in a wide range of 298-773 K.The maximum relative thermal sensitivity Sr values can reach 2.3%·K^(-1)at 773 K,which is higher than most Eu/Tb co-doped materials.This work will contribute a new Eu/Tb co-doped material to self-referencing optical temperature measurement with triple activators.
作者
陈萍
高延鹏
何勇
戴能利
CHEN Ping;GAO Yanpeng;HE Yong;DAI Nengli(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2023年第12期2128-2135,共8页
Chinese Journal of Luminescence
基金
国家自然科学基金(22101090)
中央高校基本科研业务费专项资金(JZ2023HGTB0224)。
