A new generation of dual-mode optical thermometry based on ZrO2:Eu3+ nanocrystals

For achieving well-performing optical thermometry, a new type of dual-mode optical thermometer is explored based on the valley-to-peak ratio (VPR) and fluorescence lifetime of Eu emissions in the ZrO :Eu nanocrystals with sizes down to 10 nm. In the VPR strategy, the intensity ratio between the vall...

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Bibliographic Details
Published in:Nanophotonics (Berlin, Germany) Germany), 2019-12, Vol.8 (12), p.2347-2358
Main Authors: Zhou, Jun, Lei, Ruoshan, Wang, Huanping, Hua, Youjie, Li, Denghao, Yang, Qinghua, Deng, Degang, Xu, Shiqing
Format: Article
Language:English
Subjects:
decay lifetime
Emission
Europium
Fluorescence
Nanocrystals
Nanomaterials
Photosensitivity
rare earth ion
Temperature dependence
temperature sensing
Thermometers
Thermometry
valley-to-peak ratio
Zirconium dioxide
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Summary:For achieving well-performing optical thermometry, a new type of dual-mode optical thermometer is explored based on the valley-to-peak ratio (VPR) and fluorescence lifetime of Eu emissions in the ZrO :Eu nanocrystals with sizes down to 10 nm. In the VPR strategy, the intensity ratio between the valley (600 nm) generated by the emission band overlap and the 606 nm peak ( ), which is highly temperature sensitive, is employed, giving the maximum relative sensing sensitivity ( ) of 1.8% K at 293 K and good anti-interference performance. Meanwhile, the 606 nm emission exhibits a temperature-dependent decay lifetime with the highest of 0.33% K at 573 K, which is due to the promoted nonradiative relaxation with temperature. These results provide useful information for constructing high-performance dual-mode optical thermometers, which may further stimulate the development of photosensitive nanomaterials for frontier applications.
ISSN:2192-8606
2192-8614
DOI:10.1515/nanoph-2019-0359