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Issue 47, 2019
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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 applications

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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

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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, 2019,7, 15007-15013

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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 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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