Please use this identifier to cite or link to this item: http://elar.urfu.ru/handle/10995/111667
Title: Energy Conversion of X-ray, Ultraviolet and Infrared Radiation in Gd2O3 Crystals Doped with Er3+ Ions
Authors: Trofimova, E. S.
Pustovarov, V. A.
Kuznetsova, Yu. A.
Zatsepin, A. F.
Issue Date: 2017
Publisher: American Institute of Physics Inc.
Author(s)
Citation: Energy Conversion of X-ray, Ultraviolet and Infrared Radiation in Gd2O3 Crystals Doped with Er3+ Ions / E. S. Trofimova, V. A. Pustovarov, Yu. A. Kuznetsova et al. // AIP Conference Proceedings. — 2017. — Vol. 1886. — 020024.
Abstract: Spectra of photoluminescence (PL) and X-ray excited luminescence (XRL) in region of 1.5-5.0 eV, PL excitation spectra (2.8-5.8 eV), PL decay kinetics were measured in Gd2O3 crystals doped both with Er3+ and Zn2+ ions. Synchrotron radiation (VEPP-3 storage ring, Novosibirsk, Russia) were used for XRL measurements. PL spectra were studied at room temperature and T= 88 K under excitation with energy Eexc: a) in fundamental absorption region (Eexc≥Eg); b) in intracenter excitation region (Eexc<Eg); c) in infrared region (Eexc<<Eg) with using laser 980 nm diode as exciting photons (up-conversion processes). The probability of radiative transitions from excited states of the impurity center depends on Eexc. The photoluminescence efficiency in Gd2O3 doped with both Er3+ and Zn2+ ions in the green region decreases, 4F9/2→4I15/2 transitions dominate in the red region both in XRL and PL spectra. This effect is also clearly manifested in the spectra of anti-Stokes luminescence. Energy transfer between the excited Er3+ states of the impurity center and the crystal lattice defect is observed. Decrease of the lifetime of 4S3/2 excited state in Gd2O3:Er3+ + Zn2+ from 120 to 10 μs is observed. This fact indicated s a nonradiative energy transfer between impurity center and defect. Otherwise, the defect concentration variation (by means of doping with heterovalent ions) provides the ability to control the energy conversion efficiency as well as the phosphorus color. © 2017 Author(s).
URI: http://elar.urfu.ru/handle/10995/111667
Access: info:eu-repo/semantics/openAccess
Conference name: 4th International Young Researchers' Conference: Physics, Technologies and Innovation, PTI 2017
Conference date: 15 May 2017 through 19 May 2017
SCOPUS ID: 85031120179
WOS ID: 000418447300024
PURE ID: 2214150
ISSN: 0094-243X
ISBN: 9780735415690
DOI: 10.1063/1.5002921
metadata.dc.description.sponsorship: This work was partially supported by the Ministry of Education and Science of the Russian Federation (Government task No. 3.1485.2017/4.6 and basic part of the government mandate, project No. 3.8302.2017/8.9). One of the authors (PVA) thanks Dr. S. Omelkov for their help in PL time-resolved experiments.
Appears in Collections:Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC

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