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

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.

Citation

Hundemer , F , Crovini , E , Wada , Y , Kaji , H , Bräse , S & Zysman-Colman , E 2020 , ' Tris(triazolo)triazine-based emitters for solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes ' , Materials Advances , vol. Advance Article . https://doi.org/10.1039/D0MA00659A

Publication

Materials Advances

Status

Peer reviewed

DOI

https://doi.org/10.1039/D0MA00659A

ISSN

2633-5409

Type

Journal article

Rights

Description

The KIT authors are part of the Cluster 3D Matter Made To Order under Germany's Excellence Strategy (3DMM2O – EXC-2082 –390761711), which has been funded by the German Research Foundation. This work was supported, in part, by the Cooperative Research Center (Sonderforschungsbereich SFB 1176) “Molecular Structuring of Soft Matter”. This work was partly supported by JSPS KAKENHI grant nos. 17H01231 and 17J09631, and by the International Joint Usage/Research Centre (iJURC) at the Institute for Chemical Research (ICR), Kyoto University, Japan. The St Andrews authors thank EU horizon 2020 Grant Agreement No. 812872 (TADFlife) for funding. EZ-C acknowledge the International Collaborative Research Program of iJURC/ICR, Kyoto University (Grant No. 2020-37).

Collections

University of St Andrews Research

URI

http://hdl.handle.net/10023/20820