期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 730, 期 -, 页码 12-16出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.09.282
关键词
In2O3; Eu3+; Nanocomposite; Optical thermometer
资金
- National Natural Science Foundation of China [51503036]
- Natural Science Foundation of Fujian Province [2015J01632, 2015J05091, 2016J01752, 2017J01676, 2017J01677]
- Fujian Province University (Minjiaoke) [23, 54]
- Fujian Education Department [JZ160484, JZ160486, JA15534, JA15536]
A new approach to optical thermometers with high sensitivity was developed herein by using In2O3 quantum dots (QDs) emission as temperature detecting signal and Eu3+ ions emission as reference one. Originated from the diverse thermal quenching behavior between the defect-related emission of In2O3 QDs and 4f-4f transitions of Eu3+ ions, fluorescence intensity ratio of In2O3 to Eu3+ in nanocomposite exhibited excellent temperature sensing property in the range from 303 K to 543 K. The maximum absolute and relative temperature sensitivity can reach as high as 4.43 x 10(-2) K-1 and 0.89% K-1, respectively. We believe that this work exploits an effective pathway for developing other innovative optical thermometers. (C) 2017 Elsevier B.V. All rights reserved.
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