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Divalent Europium doped CaF2 and BaF2 nanocrystals from ionic liquids

TitleDivalent Europium doped CaF2 and BaF2 nanocrystals from ionic liquids
Publication TypeJournal Article
Year of Publication2017
AuthorsAnghel, S, Golbert, S, Meijerink, A, Mudring, AV
JournalJournal of Luminescence
Volume189
Pagination2-8
Date Published09
Type of ArticleArticle
ISBN Number0022-2313
Accession NumberWOS:000404197800002
Keywordscrystals, dependence, Divalent europium, emission, fluorescence lifetime, fluoride nanoparticles, inorganic-compounds, ionic liquid, luminescence, nanofluorides, nanoparticles, optical, optics, properties, solvents, template
Abstract

A new, facile and quick synthesis method for Eu2+ doped the alkaline earth fluorides was developed using ionic liquids as solvent, precursor and capping agent. Reductive atmosphere and very high temperatures were avoided, while still attaining the desired structure, small particle sizes and divalent oxidation state of the lanthanide. This opens the door for the development of new Ln(2+) doped nanomaterials. The successful Eu2+ incorporation was proven by optical spectroscopic measurements which showed the spin and parity allowed f-d transitions of Eu2+ in CaF2:Eu2+/BaF2:Eu2+. 4f(2)-4f(7) transitions could be observed at low temperatures (7 K). (C) 2016 Elsevier B.V. All rights reserved.

DOI10.1016/j.jlumin.2016.10.007
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