Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 742, Issue -, Pages 497-503Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.01.259
Keywords
UC emission; Temperature sensing; Thermal stability
Categories
Funding
- National Nature Science Foundation of China [61565009, 11664022]
- Foundation of Natural Science of Yunnan Province [2016FB088]
- Young Talents Support Program of Faculty of Materials Science and Engineering, Kunming University of Science and Technology [14078342]
Ask authors/readers for more resources
Yb3+/Er3+/Nd3+ tri-doped KLu2F7 nanoparticles were fabricated via a typical co-precipitation method, and their phase structure, up-conversion (UC) emission and temperature sensing properties have been investigated in this work. An intense UC green emission originated from Er3+ ions is observed under the near infra-red (NIR) excitation. The maximum sensitivity of temperature is approximately 0.0044 K-1 at 533 K and 0.0041 K-1 at 413 K under the excitation of 980 and 808 nm, respectively. Meanwhile, KLu2F7: Yb3+/Er3+/Nd3+ nanoparticles exhibit excellent thermal stability under the NIR excitation. However, the thermal effect induced by 808 nm laser excitation is negligible compared with that of induced by 980 nm excitation, especially under a high pump power density excitation. It indicates that the employment of 808 nm excitation on KLu2F7: Yb3+/Er3+/Nd3+ system circumvents the laser-induced thermal effect as well as improves the accuracy of temperature sensing. Thus, it was proved that these nanoparticles provide a potential multifunctional application as thermometers and biosensors. (c) 2018 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available