A1 Refereed original research article in a scientific journal
Enhancing the Efficiency of Polariton OLEDs in and Beyond the Single-Excitation Subspace
Authors: Siltanen, Olli; Luoma, Kimmo; Musser, Andrew J.; Daskalakis, Konstantinos S.
Publisher: WILEY-V C H VERLAG GMBH
Publishing place: WEINHEIM
Publication year: 2025
Journal: Advanced Optical Materials
Journal name in source: ADVANCED OPTICAL MATERIALS
Journal acronym: ADV OPT MATER
Article number: 2403046
Number of pages: 9
eISSN: 2195-1071
DOI: https://doi.org/10.1002/adom.202403046
Web address : https://doi.org/10.1002/adom.202403046
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/485055866
Organic light-emitting diodes (OLEDs) have redefined lighting with their environment-friendliness and flexibility. However, only 25% of the electronic states of organic molecules can emit light upon electrical excitation, limiting the overall efficiency of OLEDs. Strong light-matter coupling, achieved by confining light within OLEDs using mirrors, creates hybrid light-matter states known as polaritons, which could "activate" the remaining 75% electronic triplet states. Here, triplet-to-polariton transition is studied and rates for both reverse inter-system crossing and triplet-triplet annihilation are derived. In addition, how the harmful singlet-singlet annihilation could be reduced with strong coupling is explored.
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Funding information in the publication:
This project received funding from the European Research Council (ERC)under the European Union’s Horizon 2020 research and innovation pro-gramme (grant agreement No. [948260]). The authors would like to thankAhmed Abdelmagid for useful comments.
