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

Abstract

Simultaneous enhancement of upconversion luminescence and temperature sensitivity are 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 the X-ray diffraction (XRD) and scanning electron microscope (SEM). A detailed structural analysis was carried out using Eu3+ ions as spectroscopic probe to disclose the change of local site symmetry due to aliovalent doping. The upconversion emission intensities of Er3+ in SrMoO4 phosphors are enhanced by 82 times and 255 times due to Li+ doping and Li+/Ga3+ codoping, respectively. Intense upconversion luminescence and high temperature sensitivity lead to a small temperature uncertainty (0.091K) and absolute error (‒0.5~0.3K) as well as good repeatability (<1%). Preliminary experiments from material design to device application pave the way for the practical applications of the ratiometric temperature sensors.

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Publication details

The article was received on 09 Sep 2019, accepted on 29 Oct 2019 and first published on 31 Oct 2019


Article type: Paper
DOI: 10.1039/C9TC04965G
J. Mater. Chem. C, 2019, Accepted Manuscript

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

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

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