Abstract
This study is devoted to luminescent properties of the new [Yb(L)3(phen)] complex with near-infrared emission, where L is the anion of 4,4,4-trifluoro-1-(naphthyl-2)butane-1,3-dione, and phen is 1,10-phenanthroline. It is shown that the electronic excitation energy can be efficiently transferred to Yb3+ ion electronic levels by selecting the ligand environment. To study the electroluminescent properties, a multilayer organic light-emitting diode (OLED) with the ITO/PEDOT:PSS/PVK/Yb-complex/TPBi/LiF/Al structure is designed. The efficiency of the fabricated infrared OLED is close to the record values presented in the literature for the close type of the Yb3+ complexes.
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Funding
The [Yb(L)3(phen)] complex synthesis was supported by the Russian Science Foundation, project no. 17-72-20088-p. The study of photophysical properties of the [Yb(L)3(phen)] complex was supported by the Russian Foundation for Basic Research, project no. 20-02-00222.
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Translated by A. Kazantsev
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Metlin, M.T., Goryachii, D.O., Datskevich, N.P. et al. Photo- and Electroluminescent Properties of the Yb3+ Complex with Pyrazole-Substituted 1,3-Diketone and 1,10-Phenanthroline. Bull. Lebedev Phys. Inst. 48, 139–143 (2021). https://doi.org/10.3103/S1068335621050055
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DOI: https://doi.org/10.3103/S1068335621050055