Optical Temperature-Sensing Performance of La2Ce2O7:Ho3+ Yb3+ Powders

被引：4
作者：
Chao, Jiameng [1 ,2 ]
Lin, Hui [1 ,2 ]
Yu, Dechao [1 ,2 ]
Hong, Ruijin [1 ,2 ]
Han, Zhaoxia [1 ,2 ]
Tao, Chunxian [1 ,2 ]
Zhang, Dawei [1 ,2 ]
机构：
[1] Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, 516 Jungong Rd, Shanghai 200093, Peoples R China
[2] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, 516 Jungong Rd, Shanghai 200093, Peoples R China
来源：
MATERIALS | 2024年 / 17卷 / 07期
基金：
国家重点研发计划;
关键词：
optical temperature sensing; up-conversion emission; energy transfer; pyrochlore structure; UP-CONVERSION LUMINESCENCE; LANTHANUM-CERIUM OXIDE; THERMAL-EXPANSION; THERMOMETRY; PHOSPHOR; NANOPARTICLES; EMISSION; BEHAVIOR; SYSTEM; GREEN;
D O I：
10.3390/ma17071692
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, La2Ce2O7 powders co-activated by Ho3+ and Yb3+ were synthesized by a high temperature solid-state reaction. Both Ho3+ and Yb3+ substitute the La3+ sites in the La2Ce2O7 lattice, where the Ho3+ concentration is 0.5 at.% and the Yb3+ concentration varies in the range of 10 similar to 18% at.%. Pumped by a 980 nm laser, the up-conversion (UC) green emission peak at 547 nm and the red emission at 661 nm were detected. When the doping concentration of Ho3+ and Yb3+ are 0.5 at.% and 14% at.%, respectively, the UC emission reaches the strongest intensity. The temperature-sensing performance of La2Ce2O7:Ho3+ with Yb3+ was studied in the temperature range of 303-483 K, where the highest relative sensitivity (S-r) is 0.0129 K-1 at 483 K. The results show that the powder La2Ce2O7:Ho3+, Yb3+ can be a potential candidate for remote temperature sensors.
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页数：9
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