DataVXACS Applied Electronic MaterialsPaper
journal article·2021-08-24Open access

Schiff Base Zinc(II) Complexes as Promising Emitters for Blue Organic Light-Emitting Diodes

Alexey N. Gusev, Mikhail A. Kiskin, Elena V. Braga, Mariya A. Kryukova, Glib V. Baryshnikov, Nataliya N. Karaush-Karmazin, Valentina A. Minaeva, Boris F. Minaev, Khrystyna Ivaniuk, Pavlo Stakhira, Hans Ågren, Wolfgang Linert

ACS Applied Electronic Materials· Volume 3· Issue 8
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Source abstract

Abstract

Organometallic blue fluorescent Zn(II) Schiff base complexes are synthesized and explored computationally in order to use them in organic electroluminescent heterostructures. Characterization of these pyrazolone-based azomethine-zinc complexes was accomplished by various physicochemical techniques to get insight into their applicability as an active layer in light-emitting diodes. All the complexes demonstrate high thermal stability and remarkable photoluminescence both in solution and in the solid state with maximum in the blue region. Quantum chemical calculations of the first exited electronic state and vertical singlet-singlet electronic transitions by means of time-dependent density functional theory calculations and results show that the origin of the luminescence for the target complexes refers to the intraligand charge transfer within the Schiff bases. The constructed light-emitting diodes demonstrate low input voltage (3.2-4.0 V), brightness at a level of 4300-11,600 Cd m(-2), and external quantum efficiency of up to 3.2%, which is a good value for purely fluorescent organic light-emitting diodes.
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Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Organic Electronics and Photovoltaics · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia

Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation

Department of Science and Technology, Laboratory of Organic Electronics, Linköping University, Norrköping SE-60174, Sweden

Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine

Lviv Polytechnic National University, Stepan Bandera 12, 79013 Lviv, Ukraine

Henan Center for Outstanding Overseas Scientists, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China

Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Vienna, Austria

Funding

Vetenskapsr??det · Ministry of Education and Science of Ukraine · Ministry of Education and Science of the Russian Federation

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