Tris(triazolo)triazine-based emitters for solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes

Fabian Hundemer; Ettore Crovini; Yoshimasa Wada; Hironori Kaji; Stefan Bräse; Eli Zysman-Colman

doi:10.1039/D0MA00659A

Tris(triazolo)triazine-based emitters for solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes†‡

Fabian Hundemer,

§^a Ettore Crovini,§^b Yoshimasa Wada,^c Hironori Kaji,

*^c Stefan Bräse*^ad and Eli Zysman-Colman

*^b

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* Corresponding authors

^a Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
E-mail: braese@kit.edu
Fax: (+49)-721-6084-8581
Tel: (+49)-721-6084-2903

^b Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife, UK
E-mail: eli.zysman-colman@st-andrews.ac.uk
Web: http://www.zysman-colman.com
Tel: +44 (0)1334 463826

^c Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan
E-mail: kaji@scl.kyoto-u.ac.jp

^d Institute of Biological and Chemical Systems – Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany

Abstract

We report a new emitter 3,4,5-3TCz-TTT based on a tris(triazolo)triazine acceptor that shows thermally activated delayed fluorescence and cross-compare its performance with the recently reported analogue, 3DMAC-TTT. These compounds show blue emission and delayed fluorescence with delayed lifetimes on the order of milliseconds. Solution-processed organic light-emitting diodes achieving maximum external quantum efficiencies, EQE_max, of 5.8% for 3,4,5-3TCz-TTT and 11.0% for 3DMAC-TTT.

This article is part of the themed collection: Fluorescent and Luminescent Materials

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DOI: https://doi.org/10.1039/D0MA00659A
Article type: Paper
Submitted: 31 ኦገስ 2020
Accepted: 13 ኦክቶ 2020
First published: 13 ኦክቶ 2020
This article is Open Access

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Mater. Adv., 2020,1, 2862-2871

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Tris(triazolo)triazine-based emitters for solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes

F. Hundemer, E. Crovini, Y. Wada, H. Kaji, S. Bräse and E. Zysman-Colman, Mater. Adv., 2020, 1, 2862 DOI: 10.1039/D0MA00659A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Tris(triazolo)triazine-based emitters for solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes†‡

Abstract

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Tris(triazolo)triazine-based emitters for solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes

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