publication . Article . 2020

Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission

Ćirić, Aleksandar; Aleksić, Jelena; Barudžija, Tanja; Antić, Željka; Đorđević, Vesna; Medić, Mina; Periša, Jovana; Zeković, Ivana; Mitrić, Miodrag; Dramićanin, Miroslav D.;
Open Access English
  • Published: 28 Mar 2020
  • Publisher: Zenodo
  • Country: Serbia
4I13/2 at 840 nm). Herein, we aimed to compare thermometric performances of these three different ratiometric readouts on account of their relative sensitivities, resolutions, and repeatability of measurements. For this aim, we prepared Yb3+,Er3+:YF3 nanopowders by oxide fluorination. The structure of the materials was confirmed by X-ray diffraction analysis and particle morphology was evaluated from FE-SEM measurements. Upconversion emission spectra were measured over the 293&ndash
1 with temperature resolutions of 0.3, 0.7, and 1.8 K, respectively. The study showed that the higher relative temperature sensitivity does not necessarily lead to the more precise temperature measurement and better resolution, since it may be compromised by a larger uncertainty in measurement of low-intensity emission bands.
The emission of Er3+ provides three combinations of emission bands suitable for ratiometric luminescence thermometry. Two combinations utilize ratios of visible emissions (2H11/2&rarr
473 K range upon excitation by 980 nm radiation. The obtained relative sensitivities on temperature for 523/542, 485/542, and 793/840 emission intensity ratios were 1.06 &plusmn
4I15/2 at 545 nm), while emissions from the third combination are located in near-infrared, e.g., in the first biological window (2H11/2&rarr
4I15/2 at 542 nm and 4F7/2&rarr
4I15/2 at 523 nm/ 4S3/2&rarr
4I13/2 at 793 nm/ 4S3/2&rarr
4I15/2 at 485 nm/ 4S3/2&rarr
0.23, and 0.98 &plusmn
0.02, 2.03 &plusmn
free text keywords: Luminescence thermometry, Lanthanides, YF3, Er3+ emission, Upconversion, luminescence thermometry, lanthanides, YF3, Er3+ emission, upconversion, YF<sub>3</sub>, Er<sup>3+</sup> emission, Article, YF3, Er3+ emission, General Materials Science, General Chemical Engineering, lcsh:Chemistry, lcsh:QD1-999, Radiation, Materials science, Photon upconversion, Temperature measurement, Lanthanide, Analytical chemistry, Emission spectrum, Repeatability, Emission intensity, Luminescence
Funded by
EC| NanoTBTech
Nanoparticles-based 2D thermal bioimaging technologies
  • Funder: European Commission (EC)
  • Project Code: 801305
  • Funding stream: H2020 | RIA
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