Issue 47, 2019

The enhanced photoluminescence and temperature sensing performance in rare earth doped SrMoO4 phosphors by aliovalent doping: from material design to device applications

Abstract

Simultaneous enhancement of upconversion luminescence and temperature sensitivity is achieved by aliovalent doping in Er3+/Yb3+ codoped SrMoO4 phosphors and a highly accurate ratiometric temperature sensing platform has been constructed in an all-fiber structure. The influence of aliovalent doping of Li+ and Ga3+ in SrMoO4 phosphors on the crystal structure and growth was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). A detailed structural analysis was carried out using Eu3+ ions as a spectroscopic probe to disclose the change of the local site symmetry due to aliovalent doping. The upconversion emission intensity of Er3+ in SrMoO4 phosphors is enhanced by 82 times and 255 times due to Li+ doping and Li+/Ga3+ codoping, respectively. The intense upconversion luminescence and high temperature sensitivity lead to a small temperature uncertainty (0.091 K) and an absolute error (−0.5–0.3 K) as well as good repeatability (<1%). Preliminary experiments from material design to device applications pave the way for the practical applications of ratiometric temperature sensors.

Graphical abstract: The enhanced photoluminescence and temperature sensing performance in rare earth doped SrMoO4 phosphors by aliovalent doping: from material design to device applications

Supplementary files

Article information

Article type
Paper
Submitted
09 Sep 2019
Accepted
29 Oct 2019
First published
31 Oct 2019

J. Mater. Chem. C, 2019,7, 15007-15013

The enhanced photoluminescence and temperature sensing performance in rare earth doped SrMoO4 phosphors by aliovalent doping: from material design to device applications

H. Zhang, S. Zhao, X. Wang, X. Ren, J. Ye, L. Huang and S. Xu, J. Mater. Chem. C, 2019, 7, 15007 DOI: 10.1039/C9TC04965G

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