S. A. Burikov, E. A. Filippova, A. A. Fedyanina, S. V. Kuznetsov, V. Yu. Proidakova, V. V. Voronov, T. A. Dolenko, “Influence of the intensity of exciting radiation on the luminescent properties of nanopowders NaYF<nobr>$_4$</nobr> : Yb/Tm”, Optics and Spectroscopy, 2022, Volume 130, Issue 6,Pages <nobr>817

Proceedings of The XXV Annual International Conference "Saratov Fall Meeting 2021", September 27-October 1, 2021, Saratov, Russia
Spectroscopy of condensed state

Influence of the intensity of exciting radiation on the luminescent properties of nanopowders NaYF$_4$ : Yb/Tm

S. A. Burikov^a, E. A. Filippova^a, A. A. Fedyanina^a, S. V. Kuznetsov^b, V. Yu. Proidakova^b, V. V. Voronov^b, T. A. Dolenko^a

^a Lomonosov Moscow State University, Faculty of Physics, 119991 Moscow, Russia
^b Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia

Abstract: Intensity of the bands of upconversion luminescence of $\beta$-NaYF$_4$ : Yb$^{3+}$/Tm$^{3+}$ nanopowders in DMSO suspensions vs intensity of exciting radiation were analyzed. Ranges of changes in the intensity of excitation have been established, in which either the processes of energy transfer from the sensitizer ion to the activator ion or the decay of intermediate levels of activator ions dominate.

Keywords: rare earth ions, upconversion luminescence, nanoparticle suspensions, sensitizer, activator.

Received: 20.12.2021
Revised: 01.02.2022
Accepted: 23.03.2022

DOI: 10.21883/OS.2022.06.52620.38-22