Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-24644
Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Determining non-radiative decay rates in TADF compounds using coupled transient and steady state optical data
Authors: Sem, Stefano
Jenatsch, Sandra
Stavrou, Kleitos
Danos, Andrew
Monkman, Andrew P.
Ruhstaller, Beat
et. al: No
DOI: 10.1039/D1TC05594A
10.21256/zhaw-24644
Published in: Journal of Materials Chemistry C
Volume(Issue): 10
Issue: 12
Page(s): 4878
Pages to: 4885
Issue Date: 14-Feb-2022
Publisher / Ed. Institution: Royal Society of Chemistry
ISSN: 2050-7526
2050-7534
Language: English
Subjects: OLED
Subject (DDC): 621.3: Electrical, communications, control engineering
Abstract: Thermally-activated delayed fluorescence (TADF) compounds are promising materials used in emissive layers of organic light-emitting diodes (OLEDs). Their main benefit is that they allow the internal quantum efficiency of the OLED to reach up to 100% by converting non-radiative triplet states into radiative singlets. Besides the importance of having a high reverse intersystem-crossing rate, which governs triplet conversion, minimizing the non-radiative decay processes is also extremely important to reach high efficiency. In this study we provide a new method to quantify not only the most important decay rates involved in the TADF process, but also the non-radiative decay rates of both singlet and triplet states individually from transient and steady state experimental optical data. In addition, the different contribution that the two non-radiative decay pathways have on the internal quantum efficiency is investigated. Finally, the method is applied to experimental data from two TADF materials.
URI: https://digitalcollection.zhaw.ch/handle/11475/24644
Fulltext version: Published version
License (according to publishing contract): CC BY-NC 4.0: Attribution - Non commercial 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in collections:Publikationen School of Engineering

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