用于高灵敏度光学测温的Yb^(3+)–Tb^(3+):CsPbI_(3)纳米晶体弥散玻璃  

Glasses Containing Yb^(3+)-Tb^(3+):CsPbI_(3) Nanocrystal Glass for High Sensitivity Optical Temperature Measurement

作　　者：张朔朔 邱惊龙 李路瑶[1] 阮健[1] 王静[1] 韩建军[1] ZHANG Shuoshuo;QIU Jinglong;LI Luyao;RUAN Jian;WANG Jing;HAN Jianjun(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070 China;Materials Laboratory,Hardware Technology Center,OPPO Guangdong Mobile Communications Co.,Ltd.,Dongguan 523000 China)

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]OPPO广东移动通信有限公司材料实验室,广东东莞523000

出　　处：《硅酸盐学报》2024年第8期2598-2605,共8页Journal of The Chinese Ceramic Society

基　　金：湖北省自然科学基金杰出青年项目(2023AFA067)。

摘　　要：光学温度传感器是利用材料在不同温度下的光学性质变化来测量温度的一种先进传感技术。相比于传统的温度传感器,光学温度传感器具有非接触性、高精度、快速响应和抗干扰能力强的优势。然而,现阶段光学温度传感器仍面临一些挑战,如部分材料温度响应范围有限、复杂环境下测量精度受影响等问题。采用熔融淬火法合成了Yb^(3+)–Tb^(3+):CsPbI_(3)纳米晶弥散玻璃,在365 nm的激发光下产生了来自Tb^(3+)的绿光(^(7)F_(6)–^(5)D_(4)跃迁,545 nm)及来自CsPbI_(3)纳米晶的红光(680 nm)。Yb^(3+)敏化增强Tb^(3+)绿色发光,Tb^(3+)荧光强度随温度变化较为稳定,而CsPbI_(3)纳米晶的红光随温度升高会快速衰减。针对Yb^(3+)–Tb^(3+):CsPbI_(3)纳米晶弥散玻璃的温度传感性能进行表征,发现当Yb_(2)O_(3)浓度为0.3%(摩尔分数),Tb_(4)O_(7)浓度为1.2%时,其绝对灵敏度的最高可达到0.086 K^(–1),相对灵敏度的最高为8.63%K^(–1),最小温度不确定值为0.058 K(298~403 K),表明这种材料在温度传感器中具有潜在的应用前景。Introduction Optical temperature sensor is based on the change of optical properties of materials at different temperatures.It has the advantages of non-contact,high precision and fast response,and is widely used in industrial and medical fields.However,optical temperature sensors still face some challenges at this stage,such as limited temperature response range of some materials,affected measurement accuracy in complex environments,and high cost.Therefore,improving the temperature measuring range of the sensor,enhancing the anti-interference ability and reducing the cost are the important directions of the current research and development of optical temperature sensors.Rare earth ion has a special electronic structure,5s and 5p orbitals can shield the electron transition in 4f level,so the electronic transition in 4f level is less affected by the external environment,when the external temperature changes,the fluorescence intensity of rare earth ion does not change significantly.The luminescence intensity of CsPbI_(3) nanocrystalline glass varies greatly by external temperature,and the fluorescence quenching phenomenon is easy to occur at high temperature.In this paper,a fluorescence temperature sensor based on rare earth ion and cesium lead halide perovskite nanocrystalline is used to detect the ambient temperature by the ratio of fluorescence intensity of different luminous centers,which has better sensitivity and does not require complex testing instruments.Methods The glass with the nominal compositions of 41GeO_(2)-25B_(2)O_(3)-8ZnO-3.6PbI_(2)-5.4Cs_(2)O-11NaI-5SrO-1NaF-1.2Tb_(4)O_(7)-yYb_(2)O_(3)(where y=0,0.3%,0.6%,0.9%,1.2%,in mole fraction denoted as Y-1,Y-2,Y-3,Y-4,Y-5 respectively),were prepared by melt-quenching method.The Tb^(3+)–Yb^(3+):CsPbI_(3) NCs glass were synthesized by subsequent heat treatments.The raw materials were well-mixed and then put into the alumina crucible.The glass batch were melted at 1200℃for 30 minutes,and the molten glass were poured and pressed into sheets,subsequently a

关 键 词：钙钛矿 纳米晶 能量转移 铽离子 镱离子 光学温度传感器 

分 类 号：TQ171.7[化学工程—玻璃工业]