Improved optical thermometry in Er3+:Y2O3 nanocrystals by re-calcination

被引：17
|
作者：
Liu, Lu [1 ,2 ,3 ]
Chen, Yujin [1 ,2 ,3 ]
Zhang, Xinlu [1 ,2 ]
Zhang, Zhenguo [1 ,2 ]
Wang, Yuxiao [4 ]
机构：
[1] Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China
[2] Harbin Engn Univ, Sch Sci, Harbin 150001, Peoples R China
[3] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China
[4] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2013年 / 309卷
基金：
中国国家自然科学基金;
关键词：
Upconversion; Temperature sensing; Fluorescence intensity ratio; Sensitivity; UP-CONVERSION LUMINESCENCE; ER3+-ZRO2 NANOCRYSTALS; FLUORESCENCE EMISSION;
D O I：
10.1016/j.optcom.2013.07.023
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Variations of fluorescence intensity ratio of green upconversion emissions in Er3+:Y2O3 nanocrystals and their bulk counterpart have been studied as a function of temperature. In the temperature range of 323-773 K, the maximum sensitivity of about 0.003 K-1 is obtained in the samples synthesized by the conventional sol gel method at 800 degrees C. It is found that the upconversion emission is enhanced by a factor of about 56 after re-calcining the conventional samples at 1300 degrees C. Besides that, the sensitivity is increased to the value of about 0.004 K-1, and the sensing accuracy is also improved. With efficient upconversion luminescence, high degree of sensitivity and accuracy, Er3+ doped Y2O3 bulk counterpart show promising application in nanoscale thermal sensor. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：90 / 94
页数：5
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