Eu(tta)3DPPZ-based organic light-emitting diodes: spin-coating vs. vacuum-deposition

Kirill M. Kuznetsov; Makarii I. Kozlov; Andrey N. Aslandukov; Andrey A. Vashchenko; Aleksei V. Medved'ko; Egor V. Latipov; Alexander S. Goloveshkin; Dmitry M. Tsymbarenko; Valentina V. Utochnikova

doi:10.1039/D1DT01316E

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Eu(tta)₃DPPZ-based organic light-emitting diodes: spin-coating vs. vacuum-deposition†

Kirill M. Kuznetsov,^a Makarii I. Kozlov,

^a Andrey N. Aslandukov,

^b Andrey A. Vashchenko,^c Aleksei V. Medved'ko,

^d Egor V. Latipov,^a Alexander S. Goloveshkin,^e Dmitry M. Tsymbarenko

^a and Valentina V. Utochnikova

*^af

Author affiliations

* Corresponding authors

^a M.V. Lomonosov Moscow State University, 1/3 Leninskie Gory, Moscow, Russia
E-mail: valentina.utochnikova@gmail.com

^b Laboratory of Crystallography, University of Bayreuth, 95440 Bayreuth, Germany

^c P.N. Lebedev Physical Institute, Leninsky prosp. 53, Moscow, Russia

^d N.D. Zelinsky Institute of Organic Chemistry, 47 Leninsky Prospect, Moscow, Russia

^e A.N. Nesmeyanov Institute of Organoelement Compounds, Vavilova St. 28, Moscow, Russia

^f EVOLED Ltd, 1A-24 Puškina iela, Riga LV-1050, Latvia

Abstract

The effect of the emission layer deposition method on the characteristics of OLEDs was studied on the example of the europium mixed-ligand complex Eu(tta)₃DPPZ (tta: 2-thenoyltrifluoroacetone, DPPZ: dipyrido[3,2-a:2′c,3′c-c]phenazine). The maximum brightnesses of both OLEDs almost coincided, though OLED based on the spin-coated layer operated at lower voltages. The reason for that was the higher density and smoothness of the solution-processed layer.

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Article information

DOI: https://doi.org/10.1039/D1DT01316E
Article type: Communication
Submitted: 21 Apr 2021
Accepted: 22 Jun 2021
First published: 22 Jun 2021

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Dalton Trans., 2021,50, 9685-9689

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Eu(tta)₃DPPZ-based organic light-emitting diodes: spin-coating vs. vacuum-deposition

K. M. Kuznetsov, M. I. Kozlov, A. N. Aslandukov, A. A. Vashchenko, A. V. Medved'ko, E. V. Latipov, A. S. Goloveshkin, D. M. Tsymbarenko and V. V. Utochnikova, Dalton Trans., 2021, 50, 9685 DOI: 10.1039/D1DT01316E

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