基于Na3Y(VO4)2:Yb3+/Er3+实现高灵敏度的双模式光学测温OA北大核心CSTPCD
Dual-mode Optical Thermometry with High Sensitivity Achieved in Na3Y(VO4)2:Yb3+/Er3+
基于高温固相法合成了Na3Y(VO4)2:Yb3+/Er3+上转换发光材料,该材料在绿光区和近红外二区均表现出较强的发光强度.在绿光区,基于Er3+的 2H11/2→4I15/2和 4S3/2→4I15/2跃迁进行荧光强度比光学测温,其最佳的绝对灵敏度、相对灵敏度和温度分辨率可分别达到 1.7%·K-1、1.2%·K-1 和 0.027 K;在近红外二区,基于Er3+:4I13/2→4I15/2 跃迁的Stark劈裂所进行的光学测温,其最佳的绝对灵敏度、相对灵敏度和温度分辨率分别为3.01%·K-1、0.59%·K-1 和0.06 K.更为重要的是,在生理温度范围内,以上两种光学温度计均表现出较高的测温准确性.所有数据均表明,Na3Y(VO4)2:Yb3+/Er3+是一种优异的光学测温材料,可在可见区和近红外二区实现高灵敏度的双模式光学测温.
Na3Y(VO4)2:Yb3+/Er3+upconversion(UC)material is synthesized by the high-temperature solid-state method,exhibiting strong luminescence in both green and NIR-Ⅱ region.In green region,optical thermometry based on the fluorescence intensity ratio(FIR)of Er3+:2H11/2→4I15/2 and 4S3/2→4I15/2 transition achieves optimal abso-lute sensitivity(SA),relative sensitivity(SR)and temperature resolution(δT)of 1.7%·K-1,1.2%·K-1 and 0.027 K,respectively.In NIR-Ⅱ region,optical thermometry based on the Stark splitting of Er3+:4I13/2→4I15/2 transition exhib-its optimal SA,SR and δT of 3.01%·K-1,0.59%·K-1 and 0.06 K,respectively.More importantly,both of the two optical thermometers show high accuracy for temperature measurement within the physiological temperature range.All data indicate that Na3Y(VO4)2:Yb3+/Er3+is an excellent luminescence material with the ability of high-sensitivity dual-mode optical thermometry in the visible and NIR region.
相国涛;易园园;张羽;熊明;徐秦玉;陈红豆;常瑛;姚璐
重庆邮电大学 理学院,重庆 400065
物理学
稀土离子上转换发光光学测温荧光强度比
rare earth ionsupconversion luminescenceoptical thermometryfluorescence intensity ratio
《发光学报》 2024 (006)
952-958 / 7
国家自然科学基金(11704054);重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX0366,cstc2021jcyj-msxmX0578);重庆邮电大学大学生创新创业训练计划(X20231061706031)Supported by the National Natural Science Foundation of China(11704054);the Natural Science Foundation of Chongqing(CSTB2022NSCQ-MSX0366,cstc2021jcyj-msxmX0578);Undergraduate Innovation and Entrepreneurship Training Plan Pro-gram of Chongqing University of Posts and Telecommunications(X20231061706031)
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