Issue 21, 2024

Thermally enhanced NIR up-conversion fluorescence multimode thermometry based on Y2Mo3O12:Nd3+,Yb3+

Abstract

Severe thermal quenching of fluorescence is the main obstacle to the application of fluorescence thermometers in higher temperature regions. In order to broaden the temperature detection range of fluorescence thermometers, the Y2Mo3O12:Nd3+,Yb3+ phosphor with negative thermal expansion (NTE) characteristics was successfully synthesized. The up-conversion (UC) fluorescence thermal enhancement (4F3/24I9/2) increased 109 times at 480 K and the UC fluorescence lifetime (FL) of the transition 4F5/24I9/2 increased from 77 to 144.5 μs in the range of 280 to 380 K under the excitation of a 980 nm laser. Herein, a multimode temperature probe was constructed through fluorescence intensity ratio (FIR) technology (4F7/2/4F5/2, 4F7/2/4F3/2 and 4F5/2/4F3/2) and FL technology based on the ladder-like thermally coupled energy levels (TCLs) of Nd3+. The feasibility of the probe was verified and Y2Mo3O12:Nd3+,Yb3+ has high stability and accuracy (δT = 0.61 K at 480 K), indicating that it is an ideal candidate in higher temperature monitoring. This work not only proposes an ideal scheme for designing high sensitivity fluorescence thermometers, but also provides a certain reference value for solving the problem of fluorescence thermal quenching.

Graphical abstract: Thermally enhanced NIR up-conversion fluorescence multimode thermometry based on Y2Mo3O12:Nd3+,Yb3+

Supplementary files

Article information

Article type
Paper
Submitted
03 Apr 2024
Accepted
29 Apr 2024
First published
30 Apr 2024

J. Mater. Chem. C, 2024,12, 7588-7595

Thermally enhanced NIR up-conversion fluorescence multimode thermometry based on Y2Mo3O12:Nd3+,Yb3+

Y. Zhang, M. Jin, W. Chen, Z. Wu, Z. Li and C. Guo, J. Mater. Chem. C, 2024, 12, 7588 DOI: 10.1039/D4TC01352B

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