Single Er3+/Yb3+-Codoped Yttria Nanocrystals for Temperature Sensing: Experimental Characterization and Theoretical Modeling

Galvao, Rodrigo; Santos, Luiz F. dos; O. Lima, Karmel de; Goncalves, Rogeria R. und S. Menezes, Leonardo de (2021): Single Er3+/Yb3+-Codoped Yttria Nanocrystals for Temperature Sensing: Experimental Characterization and Theoretical Modeling. In: Journal of Physical Chemistry C, Bd. 125, Nr. 27: S. 14807-14817

Abstract

In this work, Er3+/Yb3+-codoped yttria (Y2O3) nanocrystals were characterized for the first time as a thermometric probe at the single nanocrystal level using the luminescence intensity ratio technique. Nanothermometer characterization was performed by exciting the single nanoparticles with a lowpower, continuous-wave laser emitting at 980 nm, within one of the biological windows. The nanothermometer showed a relative sensitivity of 1.31% and an accuracy of 0.1 K at 300 K. The results were described by a rate equation analysis using a dual effective phonon model, which reproduced the expected phonon energy of the host matrix.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 1932-7447
• Sprache: Englisch