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Luminescence and origin of lead-related centers in single crystalline films of Y.sub.2./sub.SiO.sub.5./sub. and Lu.sub.2./sub.SiO.sub.5./sub..
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SYSNO ASEP 0396529 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Luminescence and origin of lead-related centers in single crystalline films of Y2SiO5 and Lu2SiO5. Author(s) Babin, Vladimir (FZU-D) RID, ORCID
Gorbenko, V. (UA)
Krasnikov, A. (EE)
Mihóková, Eva (FZU-D) RID, ORCID, SAI
Nikl, Martin (FZU-D) RID, ORCID, SAI
Zazubovich, S. (EE)
Zorenko, Y. (UA)Source Title Radiation Measurements. - : Elsevier - ISSN 1350-4487
Roč. 56, Sept (2013), s. 124-128Number of pages 5 s. Language eng - English Country GB - United Kingdom Keywords luminescence ; oxyorthosilicates ; single crystalline films Subject RIV BH - Optics, Masers, Lasers R&D Projects GAP204/12/0805 GA ČR - Czech Science Foundation (CSF) IAA100100810 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) Institutional support FZU-D - RVO:68378271 UT WOS 000325671400029 EID SCOPUS 84884812607 DOI 10.1016/j.radmeas.2013.04.005 Annotation In the temperature range 4.2-350 K, the steady-state and time-resolved emission and excitation spectra and luminescence decay kinetics are studied for the undoped Y2SiO5 and Lu2SiO5 single crystalline films grown by liquid phase epitaxy method from the PbO-based flux and, owing to that, containing lead ions substituting for Y3+ or Lu3+ ions. Luminescence characteristics of Pb-related centers of different types are identified. On the basis of the results obtained, we suggest that the ultraviolet emission of Pb-related centers arises from the Pb2+ ions substituting for Y3+ or Lu3+ ions in the Y1 and Lu1 lattice sites of the X2 structure. Possible hypotheses on the origin of the intense complex lead-related blue emission are discussed. We propose phenomenological models describing the excited-state dynamics of the studied luminescence centers. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2014
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