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Article

Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides

1
Diamond Light Source, Harwell Campus, Didcot OX11 0DE, UK
2
Denys Wilkinson Building, Department of Physics, University of Oxford, Oxford OX1 3RH, UK
3
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
4
Lviv Polytechnic National University, 12 Bandera, Lviv 79646, Ukraine
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Ivan Franko National University of Lviv, Tarnavskogo Str. 107, 79017 Lviv, Ukraine
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Institute of Physics, University of Bydgoszcz, Weyssenhoffa 11, 85-072 Bydgoszcz, Poland
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(18), 5259; https://doi.org/10.3390/s20185259
Received: 18 August 2020 / Revised: 8 September 2020 / Accepted: 11 September 2020 / Published: 15 September 2020
(This article belongs to the Section Remote Sensors)
Luminescence methods for non-contact temperature monitoring have evolved through improvements of hardware and sensor materials. Future advances in this field rely on the development of multimodal sensing capabilities of temperature probes and extend the temperature range across which they operate. The family of Cr-doped oxides appears particularly promising and we review their luminescence characteristics in light of their application in non-contact measurements of temperature over the 5–300 K range. Multimodal sensing utilizes the intensity ratio of emission lines, their wavelength shift, and the scintillation decay time constant. We carried out systematic studies of the temperature-induced changes in the luminescence of the Cr3+-doped oxides Al2O3, Ga2O3, Y3Al5O12, and YAlO3. The mechanism responsible for the temperature-dependent luminescence characteristic is discussed in terms of relevant models. It is shown that the thermally-induced processes of particle exchange, governing the dynamics of Cr3+ ion excited state populations, require low activation energy. This then translates into tangible changes of a luminescence parameter with temperature. We compare different schemes of temperature sensing and demonstrate that Ga2O3-Cr is a promising material for non-contact measurements at cryogenic temperatures. A temperature resolution better than ±1 K can be achieved by monitoring the luminescence intensity ratio (40–140 K) and decay time constant (80–300 K range). View Full-Text
Keywords: non-contact luminescence thermometry; luminescence decay thermometry; intensity ratio thermometry; wavelength shift thermometry; Cr3+ emission non-contact luminescence thermometry; luminescence decay thermometry; intensity ratio thermometry; wavelength shift thermometry; Cr3+ emission
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MDPI and ACS Style

Mykhaylyk, V.; Kraus, H.; Zhydachevskyy, Y.; Tsiumra, V.; Luchechko, A.; Wagner, A.; Suchocki, A. Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides. Sensors 2020, 20, 5259. https://doi.org/10.3390/s20185259

AMA Style

Mykhaylyk V, Kraus H, Zhydachevskyy Y, Tsiumra V, Luchechko A, Wagner A, Suchocki A. Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides. Sensors. 2020; 20(18):5259. https://doi.org/10.3390/s20185259

Chicago/Turabian Style

Mykhaylyk, Vitaliy; Kraus, Hans; Zhydachevskyy, Yaroslav; Tsiumra, Volodymyr; Luchechko, Andriy; Wagner, Armin; Suchocki, Andrzej. 2020. "Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides" Sensors 20, no. 18: 5259. https://doi.org/10.3390/s20185259

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