This study explores potential of Er3+-Yb3+ doped phosphors for up-conversion luminescence thermometry in the temperature range from 10 K to 300 K. Yttrium oxide nanopowder doped with trivalent ytterbium and erbium ions (Y1.97Yb0.02Er0.01O3) was prepared by hydrothermal synthesis as an example. The intensity ratios of up-conversion emissions from thermally coupled 2H11/2 and 4S3/2 levels of Er3+ show strong temperature dependence (in the range 150 K–300 K) with much higher relative sensitivity than those reported for thermometry above room temperature with Er3+-Yb3+ based up-conversion materials. The maximal value of relative sensitivity is 5.28%K−1 at 150 K, with temperature resolution ranging from 0.81 K to 0.06 K. In addition, the intensity ratios of emission from thermally non-coupled Er3+ levels (2H9/2 and 4F9/2) and from 4S3/2 also show temperature dependence that can be approximated with an exponential function. With these up-conversion emission ratios, it is possible measure temperature in the range of 10 K to 300 K with excellent sensitivity and resolution.
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28 May 2014
Research Article|
May 28 2014
Luminescence thermometry below room temperature via up-conversion emission of Y2O3:Yb3+,Er3+ nanophosphors Available to Purchase
V. Lojpur;
V. Lojpur
Vinča Institute of Nuclear Sciences,
University of Belgrade
, P.O. Box 522, Belgrade 11001, Serbia
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G. Nikolić;
G. Nikolić
Vinča Institute of Nuclear Sciences,
University of Belgrade
, P.O. Box 522, Belgrade 11001, Serbia
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M. D. Dramićanin
M. D. Dramićanin
a)
Vinča Institute of Nuclear Sciences,
University of Belgrade
, P.O. Box 522, Belgrade 11001, Serbia
Search for other works by this author on:
V. Lojpur
Vinča Institute of Nuclear Sciences,
University of Belgrade
, P.O. Box 522, Belgrade 11001, Serbia
G. Nikolić
Vinča Institute of Nuclear Sciences,
University of Belgrade
, P.O. Box 522, Belgrade 11001, Serbia
M. D. Dramićanin
a)
Vinča Institute of Nuclear Sciences,
University of Belgrade
, P.O. Box 522, Belgrade 11001, Serbia
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
J. Appl. Phys. 115, 203106 (2014)
Article history
Received:
January 20 2014
Accepted:
May 15 2014
Citation
V. Lojpur, G. Nikolić, M. D. Dramićanin; Luminescence thermometry below room temperature via up-conversion emission of Y2O3:Yb3+,Er3+ nanophosphors. J. Appl. Phys. 28 May 2014; 115 (20): 203106. https://doi.org/10.1063/1.4880158
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