Understanding the heavy-atom effect for efficient enhancement of spin-orbit coupling in organic thermally activated delayed fluorescence emitters (Conference Presentation)

Michal Monka; Daria Grzywacz; Karol Kozakiewicz; Estera Hoffman; Vladyslav Ievtukhov; Radoslaw Rogowski; Aleksander Kubicki; Beata Liberek; Piotr Bojarski; Illia E. Serdiuk

doi:10.1117/12.2646123

3 October 2022 Understanding the heavy-atom effect for efficient enhancement of spin-orbit coupling in organic thermally activated delayed fluorescence emitters (Conference Presentation)

Michal Monka, Daria Grzywacz, Karol Kozakiewicz, Estera Hoffman, Vladyslav Ievtukhov, Radoslaw Rogowski, Aleksander Kubicki, Beata Liberek, Piotr Bojarski, Illia E. Serdiuk

Author Affiliations +

Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC122080W (2022) https://doi.org/10.1117/12.2646123
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States

Abstract

Currently, the major problem of most thermally activated delayed fluorescence (TADF) emitters is low rate of reverse intersystem crossing (rISC), a crucial process, responsible for conversion of dark triplet excitons into emissive singlet ones. One of the solutions to accelerate rISC is to increase spin-orbit coupling (SOC) between triplet and singlet states. It can be achieved by heavy-atom effect (HAE). Described here research is aimed to verify HAE concept for TADF materials through detailed experimental and DFT investigations conducted on blue and red/NIR derivatives of TADF emitters with high potential for application [1,2].

Conference Presentation

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Michal Monka, Daria Grzywacz, Karol Kozakiewicz, Estera Hoffman, Vladyslav Ievtukhov, Radoslaw Rogowski, Aleksander Kubicki, Beata Liberek, Piotr Bojarski, and Illia E. Serdiuk "Understanding the heavy-atom effect for efficient enhancement of spin-orbit coupling in organic thermally activated delayed fluorescence emitters (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122080W (3 October 2022); https://doi.org/10.1117/12.2646123

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