Upconverting NIR-to-NIR LuVO 4 :Nd 3+ /Yb 3+ Nanophosphors for High-Sensitivity Optical Thermometry

Accurate contactless thermometry is required in many rapidly developing modern applications such as biomedicine, micro- and nanoelectronics, and integrated optics. Ratiometric luminescence thermal sensing attracts a lot of attention due to its robustness toward systematic errors. Herein, a phonon-as...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2022-01, Vol.14 (1), p.1757-1764
Main Authors: Kolesnikov, Ilya E, Afanaseva, Elena V, Kurochkin, Mikhail A, Vaishlia, Elena I, Kalinichev, Alexey A, Kolesnikov, Evgenii Yu, Lähderanta, Erkki
Format: Article
Language:English
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Summary:Accurate contactless thermometry is required in many rapidly developing modern applications such as biomedicine, micro- and nanoelectronics, and integrated optics. Ratiometric luminescence thermal sensing attracts a lot of attention due to its robustness toward systematic errors. Herein, a phonon-assisted upconversion in LuVO :Nd /Yb nanophosphors was successfully applied for temperature measurements within the 323-873 K range via the luminescence intensity ratio technique. Dual-activating samples were obtained by codoping and mixing single-doped nanopowders. The effect of the type of dispersion system and the Yb doping concentration was studied in terms of thermometric performances. The relative thermal sensitivity reached a value of 2.6% K , while the best temperature resolution was 0.2 K. The presented findings show the way to enhance the thermometric characteristics of contactless optical sensors.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.1c20937