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Peculiarities and the red shift of Eu.sup.2+ ./sup.luminescence in Gd.sup.3+./sup.-admixed YAG phosphors
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SYSNO ASEP 0545154 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Peculiarities and the red shift of Eu2+ luminescence in Gd3+-admixed YAG phosphors Author(s) Jarý, Vítězslav (FZU-D) RID, ORCID
Havlák, Lubomír (FZU-D) RID, ORCID
Buryi, Maksym (FZU-D) RID, ORCID
Mihóková, Eva (FZU-D) RID, ORCID, SAI
Babin, Vladimir (FZU-D) RID, ORCID
Bárta, Jan (FZU-D) ORCID
Vaněček, Vojtěch (FZU-D) ORCID
Remeš, Zdeněk (FZU-D) RID, ORCID
Nikl, Martin (FZU-D) RID, ORCID, SAINumber of authors 9 Article number 111464 Source Title Optical Materials. - : Elsevier - ISSN 0925-3467
Roč. 120, Oct (2021)Number of pages 11 s. Language eng - English Country NL - Netherlands Keywords photoluminescence ; Eu2+ emission ; (Gd,Y)3Al5O12 ; white LED phosphors Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000691533400005 EID SCOPUS 85112525818 DOI 10.1016/j.optmat.2021.111464 Annotation Set of Eu2+-doped (Gd,Y)3Al5O12 (GYAG) powder samples with different Gd/Y ratio was synthesized by inor-ganic reaction in the solid state from high purity Gd2O3, Y2O3, Al2O3 and EuS. Their structural, scintillation and optical properties were investigated thoroughly by means of X-ray powder diffraction, time-resolved lumines-cence spectroscopy, photothermal deflection spectroscopy and electron paramagnetic resonance in a broad temperature range to assess the influence of Gd admixture into the YAG host. A phenomenological model was fitted to the measured temperature dependences of the photoluminescence emission spectra and photo-luminescence decay times to better understand the dynamics of the 5d excited state of the Eu2+center. Ther-moluminescence and delayed recombination measurements were performed to study the trap distribution and thermally induced ionization of the activator’s excited state. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1016/j.optmat.2021.111464
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