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3 October 2022 Anthracene-bridged exciplexes utilizing hot-exciton states for fast and bright TADF from locally excited states (Conference Presentation)
Alexander J. C. Kuehne
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Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC1220802 (2022) https://doi.org/10.1117/12.2632434
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
Bridged-exciplexes are known to exhibit acceptable TADF performance; however, due to the nature of their formation, the emissive state is typically a charge transfer state, often with mediocre oscillator strength and low quantum yield. We here present anthracene-bridged exciplexes, which provide a large T1 to T2 gap and a locally excited S1 state. There is a range of donor and acceptor strengths, at which the electronic states of the formed exciplex and anthracene moiety can mix. This produces hot excited states, allowing extremely fast RISC to the locally excited state for emission. These hot-exciplex molecules exhibit high PLQY, fast delayed emission, and good EQEs in OLEDs.
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Alexander J. C. Kuehne "Anthracene-bridged exciplexes utilizing hot-exciton states for fast and bright TADF from locally excited states (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC1220802 (3 October 2022); https://doi.org/10.1117/12.2632434
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KEYWORDS
Organic light emitting diodes
Bridges
Luminescence
Molecules
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