Effect of a twin-emitter design strategy on a previously reported thermally activated delayed fluorescence organic light-emitting diode

Effect of a twin-emitter design strategy on a previously reported thermally activated delayed fluorescence organic light-emitting diode

In this work we showcase the emitter DICzTRZ in which we employed a twin-emitter design of our previously reported material, ICzTRZ. This new system presented a red-shifted emission at 488 nm compared to that of ICzTRZ at 475 nm and showed a comparable photoluminescence quantum yield of 57.1% in a 2...

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Bibliographic Details
Main Authors: Ettore Crovini, Zhen Zhang, Yu Kusakabe, Yongxia Ren, Yoshimasa Wada, Bilal A. Naqvi, Prakhar Sahay, Tomas Matulaitis, Stefan Diesing, Ifor D. W. Samuel, Wolfgang Brütting, Katsuaki Suzuki, Hironori Kaji, Stefan Bräse, Eli Zysman-Colman
Format: Article
Language:English
Published: Beilstein-Institut 2021-12-01
Series:Beilstein Journal of Organic Chemistry
Subjects:
blue emitters
dimer
indolocarbazole
orientation
outcoupling effect
solution-processed oleds
tadf emitters
triazine
Online Access:https://doi.org/10.3762/bjoc.17.197
Description
Summary:In this work we showcase the emitter DICzTRZ in which we employed a twin-emitter design of our previously reported material, ICzTRZ. This new system presented a red-shifted emission at 488 nm compared to that of ICzTRZ at 475 nm and showed a comparable photoluminescence quantum yield of 57.1% in a 20 wt % CzSi film versus 63.3% for ICzTRZ. The emitter was then incorporated within a solution-processed organic light-emitting diode that showed a maximum external quantum efficiency of 8.4%, with Commission Internationale de l’Éclairage coordinate of (0.22, 0.47), at 1 mA cm−2.
ISSN:1860-5397

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