Please use this identifier to cite or link to this item:
Title: Optical temperature sensing properties of KLu2F7 : Yb3+/Er3+/Nd3+ nanoparticles under NIR excitation
Authors: Qi, Y
Li, S
Min, Q
Lu, W 
Xu, X
Zhou, D
Qiu, J
Wang, L
Yu, X
Keywords: Temperature sensing
Thermal stability
UC emission
Issue Date: 2018
Publisher: Elsevier
Source: Journal of alloys and compounds, 2018, v. 742, p. 497-503 How to cite?
Journal: Journal of alloys and compounds 
Abstract: 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.
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2018.01.259
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Citations as of Sep 11, 2018


Citations as of Sep 18, 2018

Page view(s)

Citations as of Sep 18, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.