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This article is cited in 6 scientific papers (total in 6 papers)
XVII International Theophilov Symposium, Yekaterinburg, September 23-28, 2018
Impurity centers
Energy conversion in Gd$_{2}$O$_{3}$ nanocrystals doped with Er$^{3+}$ ions
E. S. Trofimova, V. A. Pustovarov, A. F. Zacepin Ural Federal University, Yekaterinburg, Russia
Abstract:
The conversion of the energy absorbed by cubic Gd$_{2}$O$_{3}$ nanocrystals doped with Er$^{3+}$ and codoped with Yb$^{3+}$ and Zn$^{2+}$ ions in a temperature range of 95–425 K is studied at various concentrations of dopants. The photoluminescence spectra confirm the ability of excitation energy transfer from the Gd$^{3+}$ ions or the matrix towards the Er$^{3+}$ ions. The population of upper excited states in the Er$^{3+}$ ions depends on the way of excitation, which cause the alterations in the probability of multiphonon relaxation from the excited states to the radiative levels. The kinetics of photoluminescence decay exhibit the possible energy transfer from anionic defects created by extra doping with Zn$^{2+}$ ions. The temperature dependences of the upconversion luminescence yield for emission lines of 560 and 660 nm are found to be different.
Citation:
E. S. Trofimova, V. A. Pustovarov, A. F. Zacepin, “Energy conversion in Gd$_{2}$O$_{3}$ nanocrystals doped with Er$^{3+}$ ions”, Fizika Tverdogo Tela, 61:5 (2019), 872–875; Phys. Solid State, 61:5 (2019), 763–767
Linking options:
https://www.mathnet.ru/eng/ftt8815 https://www.mathnet.ru/eng/ftt/v61/i5/p872
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