基于ZrO_(2)∶Yb^(3+)/Er^(3+)的非热猝灭型四重信号响应上转换荧光温度传感  

Quadruple-signal Responsive Temperature Sensing Based on Non-thermal Quenched Upconversion Luminescence in ZrO_(2)∶Yb^(3+)/Er^(3+)

作　　者：董宇 郝朴言 朱蕊 贾梦真 李婷婷 任家辉 张瑾怡 赵小奇 DONG Yu;HAO Puyan;ZHU Rui;JIA Mengzhen;LI Tingting;REN Jiahui;ZHANG Jinyi;ZHAO Xiaoqi(School of Physics and Opto-Electronic Technology,Baoji University of Arts and Sciences,Baoji 721016,China)

机构地区：[1]宝鸡文理学院物理与光电技术学院,陕西宝鸡721016

出　　处：《发光学报》2025年第1期81-88,共8页Chinese Journal of Luminescence

基　　金：陕西省教育厅自然科学基金项目(23JK0291);陕西省高校青年创新团队、陕西省重点科技创新团队资助项目(2024RSCXTD66);陕西省教育厅重点科研计划(22JC001)。

摘　　要：采用尿素辅助的共沉淀法制备了ZrO_(2)∶Yb^(3+)/Er^(3+)材料。利用X射线衍射技术探究了Yb^(3+)/Er^(3+)掺杂对ZrO_(2)晶体结构的影响,结果显示,Yb^(3+)和Er^(3+)离子的掺杂导致了ZrO_(2)从单斜相到四方相和立方相的转变。通过温度依赖的上转换光谱探究了ZrO_(2)∶Yb^(3+)/Er^(3+)的发光热稳定性以及基于热耦合能级的温度传感特性。研究结果表明,在980 nm激光激发下,ZrO_(2)∶Yb^(3+)/Er^(3+)表现为无热猝灭特征的上转换发光。并且,我们分别利用位于绿光区2H11/2和^(4)S_(3/2)两个独立能级之间的热耦合特性,基于绿光区^(4)S_(3/2)单一能级上不同Stark分裂能级^(4)S_(3/2)(1)和^(4)S_(3/2)(2)之间的热耦合特性和基于红光区^(4)F_(9/2)单一能级上不同Stark分裂能级^(4)F_(9/2)(1)和^(4)F_(9/2)(2)之间的热耦合特性,实现了4个荧光强度比信号同时响应的温度传感。相比于单一荧光强度比信号的温度传感,这种多信号同时响应的测温方案可以进一步避免测温过程中偶然因素对测温结果的干扰,提高测温的准确性。ZrO_(2)∶Yb^(3+)/Er^(3+)samples were prepared by urea-assisted coprecipitation.The effect of Yb^(3+)/Er^(3+)doping on the crystal structure of ZrO_(2)was investigated by X-ray diffraction technique.The experimental results investigate that the doping of Yb^(3+)and Er^(3+)ions leads to the phase transformation of ZrO_(2)from monoclinic to tetragonal and cubic.The luminescent thermal stability of ZrO_(2)∶Yb^(3+)/Er^(3+)and the temperature sensing characteristics based on thermal coupling energy levels were investigated by temperature-dependent upconversion spectra.ZrO_(2)∶Yb^(3+)/Er^(3+)shows an upconversion luminescence without thermal quenching characteristics under the excitation of 980 nm laser.Based on the thermal coupling characteristics between green-emitted 2H11/2 and^(4)S_(3/2),green-emitted Stark levels^(4)S_(3/2)(1)and^(4)S_(3/2)(2)and redemitted Stark levels^(4)F_(9/2)(1)and^(4)F_(9/2)(2),the temperature sensing with four fluorescence intensity ratio signals responding at the same time is realized.Compared with the temperature sensor with a single fluorescence intensity ratio signal,the temperature measurement with multiple signals responding at the same time can further avoid the interference of accidental factors in the temperature measurement process and improve the accuracy of temperature measurement.

关 键 词：热耦合能级 温度传感 非热猝灭 晶体相变 

分 类 号：O482.31[理学—固体物理]