Issue 8, 2020
From the journal:

Materials Advances

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

Fabian Hundemer, ORCID logo §a   Ettore Crovini,§b   Yoshimasa Wada,c   Hironori Kaji, ORCID logo *c   Stefan Bräse*ad  and  Eli Zysman-Colman ORCID logo *b  

* 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, EQEmax, of 5.8% for 3,4,5-3TCz-TTT and 11.0% for 3DMAC-TTT.

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

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Article information

DOI
https://doi.org/10.1039/D0MA00659A
Article type
Paper
Submitted
31 Aug 2020
Accepted
13 Oct 2020
First published
13 Oct 2020
This article is Open Access
Creative Commons BY license

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

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