Structural, luminescence and thermometric properties of nanocrystalline YVO 4 :Dy 3+ temperature and concentration series.

Autor: Kolesnikov IE; St. Petersburg State University, 7/9 Universitetskaya nab., 199034, St. Petersburg, Russia. ie.kolesnikov@gmail.com.; Lappeenranta University of Technology LUT, Skinnarilankatu 34, 53850, Lappeenranta, Finland. ie.kolesnikov@gmail.com., Kalinichev AA; St. Petersburg State University, 7/9 Universitetskaya nab., 199034, St. Petersburg, Russia., Kurochkin MA; St. Petersburg State University, 7/9 Universitetskaya nab., 199034, St. Petersburg, Russia., Golyeva EV; Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251, St. Petersburg, Russia.; Scientific and Technological Institute of Optical Material Science, VNTs S. I. Vavilov State Optical Institute, Babushkina 36-1, 192171, St. Petersburg, Russia., Terentyeva AS; Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251, St. Petersburg, Russia., Kolesnikov EY; Volga State University of Technology, Lenin sqr. 3, 424000, Yoshkar-Ola, Russia., Lähderanta E; Lappeenranta University of Technology LUT, Skinnarilankatu 34, 53850, Lappeenranta, Finland.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2019 Feb 14; Vol. 9 (1), pp. 2043. Date of Electronic Publication: 2019 Feb 14.
DOI: 10.1038/s41598-019-38774-6
Abstrakt: We report systematic study of Dy 3+ -doped YVO 4 nanophosphors synthesized via modified Pechini technique. Effect of calcination temperature and doping concentration on structure and luminescence has been investigated. XRD and Raman spectroscopy revealed preparation of single phase nanoparticles without any impurities. Synthesized nanopowders consisted of weakly agglomerated nanoparticles with average size about 50 nm. Photoluminescence spectra of YVO 4 :Dy 3+ nanoparticles consisted of the characteristic narrow lines attributed to the intra-configurational 4f-4f transitions dominating by the hypersensitive 4 F 9/2 - 6 H 13/2 transition. The calcination temperature variation did not affect 4 F 9/2 lifetime, whereas increase of doping concentration resulted in its gradual decline. Potential application of YVO 4 :Dy 3+ 1 at.% and 2 at.% nanopowders as ratiometric luminescence thermometers within 298-673 K temperature range was tested. The main performances of thermometer including absolute and relative thermal sensitivities and temperature uncertainty were calculated. The maximum relative thermal sensitivity was determined to be 1.8% K -1 @298 K, whereas the minimum temperature uncertainty was 2 K.
Databáze: MEDLINE
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