La0.4Gd1.6Zr2O7:0.1%Pr transparent sintered ceramic – a wide-range luminescence thermometer

Sintered transparent ceramics, presenting extraordinary resistance to thermal shocks, incomparably larger than glasses, glass ceramics, and single crystals, maybe valuable luminescence thermometers especially for high-temperature applications. The literature on that subject is, however, very much li...

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Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2020-06, Vol.8 (21), p.7005-7011
Main Authors: Trojan-Piegza, Joanna, Brites, Carlos D S, João F C B Ramalho, Wang, Zhengjuan, Zhou, Guohong, Wang, Shiwei, Carlos, Luís D, Zych, Eugeniusz
Format: Article
Language:English
Subjects:
Ceramics
Glass ceramics
High temperature
Luminescence
Sensitivity
Shock resistance
Single crystals
Sintering
Temperature dependence
Thermal resistance
Thermometers
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Summary:Sintered transparent ceramics, presenting extraordinary resistance to thermal shocks, incomparably larger than glasses, glass ceramics, and single crystals, maybe valuable luminescence thermometers especially for high-temperature applications. The literature on that subject is, however, very much limited at present. In this paper, the performance of La0.4Gd1.6Zr2O7:0.1%Pr3+ sintered transparent ceramics as a luminescence thermometer was investigated. Temperature dependence of the intensity ratio of emissions from 3P0 and 1D2 levels of the Pr3+ activator was found useful to measure temperature with reasonable relative sensitivity and accuracy over the 15–650 K range – one of the broadest achievable up to date. Time-resolved spectroscopy enabled distinct emissions from 1D2 and 3P0 in the red part of the spectrum. This allowed achieving an impressive relative sensitivity of the La0.4Gd1.6Zr2O7:0.1%Pr luminescence thermometer which exceeded 0.81% K−1 at 650 K.
ISSN:2050-7526
2050-7534
DOI:10.1039/d0tc00861c