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Efficient Sky-Blue Organic Light-Emitting Diodes Using a Highly Horizontally Oriented Thermally Activated Delayed Fluorescence Emitter [in press]

Zhang, Zhen; Crovini, E.; Santos, P. L. dos; Naqvi, B. A.; Cordes, D. B.; Slawin, A. M. Z.; Sahay, P.; Brütting, W.; Samuel, I. D. W.; Bräse, Stefan; Zysman-Colman, E.

Abstract:
Organic thermally activated delayed fluorescent (TADF) materials can harvest 100% of the electrically generated excitons as a result of their small singlet–triplet energy difference. However, maximizing the external quantum efficiency (EQE) of a device also requires enhancing the light out‐coupling efficiency. This work presents a new acceptor–donor–acceptor (ADA) emitter employing an indolocarbazole donor and diphenyltriazine acceptors that show nearly‐completely horizontal orientation regardless of the host matrix, leading to a sky‐blue organic light‐emitting diode (λ$_{EL}$ = 483 nm, CIE coordinates of 0.17, 0.32) with EQE$_{MAX}$ of 22.1%, a maximum luminance of 7800 cd m$^{-2}$, and blue emission.

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Verlagsausgabe §
DOI: 10.5445/IR/1000125823
Veröffentlicht am 10.11.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Organische Chemie (IOC)
Institut für Biologische und Chemische Systeme (IBCS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2195-1071
KITopen-ID: 1000125823
Erschienen in Advanced optical materials
Seiten Art.-Nr.: 2001354
Vorab online veröffentlicht am 23.10.2020
Nachgewiesen in Scopus
Web of Science
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