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Published in: Journal of Materials Science 18/2022

03-01-2022 | Advanced Nanomaterials

NIR-OLED structures based on lanthanide coordination compounds: synthesis and luminescent properties

Authors: Artem Barkanov, Anna Zakharova, Tatjana Vlasova, Ekaterina Barkanova, Andrew Khomyakov, Igor Avetissov, Ilya Taydakov, Nikolay Datskevich, Victoria Goncharenko, Roman Avetisov

Published in: Journal of Materials Science | Issue 18/2022

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Abstract

Electroluminescence complexes based on ytterbium and 5-methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-2,4-dihydro-3H-pyrazol-3-one (HL) ligand and various diimine-type ancillary ligands (2,2-bipyridine, bathophenanthroline, 1,10-phenanthroline) have been synthesized, and corresponding crystals were investigated. [Yb(L)3(bipy)] and [Yb(L)3(bath)] complexes have triclinic structure (P-1), while [Yb(L)3(phen)] complex has orthorhombic structure (P212121). The crystallography parameters were determined. The photoluminescence of the complexes demonstrated only bands resulted from \(^{2} F_{5/2}^{{}} \to^{2} F_{7/2}^{{}}\) transition and corresponding three Stark subcomponents generated due to the crystal field action. NIR-OLED structures with emitting layers based on the [Yb(L)3(bipy)], [Yb(L)3(bath)], and [Yb(L)3(phen)] complexes have been fabricated, and their electroluminescence demonstrated maxima intensities at 978 and 1005 nm. Comparison of NIR-OLEDs power density showed that the maximal power densities of 2.17 (978 nm) and 1.92 (1005 nm) μW × cm−2 were determined for the NIR-OLED based on [Yb(L)3(bath)] complex.

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Appendix
Available only for authorised users
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Metadata
Title
NIR-OLED structures based on lanthanide coordination compounds: synthesis and luminescent properties
Authors
Artem Barkanov
Anna Zakharova
Tatjana Vlasova
Ekaterina Barkanova
Andrew Khomyakov
Igor Avetissov
Ilya Taydakov
Nikolay Datskevich
Victoria Goncharenko
Roman Avetisov
Publication date
03-01-2022
Publisher
Springer US
Published in
Journal of Materials Science / Issue 18/2022
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-06721-4

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