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Ternary sulfides ALnS.sub.2./sub.:Eu.sup.2+./sup. (A = Alkaline Metal, Ln = rare-earth element) for lighting: Correlation between the host structure and Eu.sup.2+./sup. emission maxima
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SYSNO ASEP 0541545 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ternary sulfides ALnS2:Eu2+ (A = Alkaline Metal, Ln = rare-earth element) for lighting: Correlation between the host structure and Eu2+ emission maxima Author(s) Brik, M.G. (CN)
Jarý, Vítězslav (FZU-D) RID, ORCID
Havlák, Lubomír (FZU-D) RID, ORCID
Bárta, Jan (FZU-D) ORCID
Nikl, Martin (FZU-D) RID, ORCID, SAINumber of authors 5 Article number 129380 Source Title Chemical Engineering Journal. - : Elsevier - ISSN 1385-8947
Roč. 418, Aug (2021)Number of pages 11 s. Language eng - English Country CH - Switzerland Keywords white LED ; ternary sulfide ; mission spectra ; Eu2+ 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) EF16_027/0008215 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000661317400004 EID SCOPUS 85103084258 DOI 10.1016/j.cej.2021.129380 Annotation Ternary sulfides ALnS2 (A = Alkaline Metal, Ln = rare-earth element) doped with the Eu2+ ions are characterized by a very wide range of tunability of the Eu2+ emission maxima with the host’s chemical composition. In the present work, a detailed analysis of the structural properties of these materials was performed. It was shown that their lattice constants can easily be expressed as the linear functions of the ionic radii and electronegativities of the constituting elements. As a further step, the relations between the structural properties of the hosts and optical properties of the Eu2+ dopant were analyzed. It was demonstrated that the position of the Eu2+ emission maxima is a linear function of the so-called hexagonality ratio c/a, where c and a are the lattice constants of the rhombohedral ternary sulfides. The obtained results can be used as helpful guides for manufacturing Eu2+-doped ternary sulfides with desired emission properties with high potential for LEDs applications.
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.cej.2021.129380
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