基于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自参考光学温度测量  

Triple-activator Photoluminescence of Eu/Tb/SnO_(2)Nanocrystals Co-doped Silica Glasses for Self-referencing Optical Temperature Measurement

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)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009 [2]华中科技大学武汉光电国家研究中心,湖北武汉430074

出　　处：《发光学报》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)。

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.

关 键 词：稀土离子 SnO_(2)纳米晶 光致发光 温度测量 二氧化硅玻璃 

分 类 号：O482.31[理学—固体物理]