Enhancing the efficiency of polariton OLEDs in and beyond the single-excitation subspace

• URL: http://arxiv.org/abs/2404.04257v2
• Date: Thu, 17 Oct 2024 11:16:40 GMT
• Title: Enhancing the efficiency of polariton OLEDs in and beyond the single-excitation subspace
• Authors: Olli Siltanen, Kimmo Luoma, Andrew J. Musser, Konstantinos S. Daskalakis,
• Abstract summary: Only 25 % of electronic states of organic molecules can emit light upon electrical excitation, limiting OLEDs' efficiency. Strong light-matter coupling, achieved by confining light within OLEDs using mirrors, creates hybrid light-matter states known as polaritons. We study triplet-to-polariton transition and derive rates for both reverse inter-system crossing and triplet-triplet annihilation.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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, we study triplet-to-polariton transition and derive rates for both reverse inter-system crossing and triplet-triplet annihilation. In addition, we explore how the harmful singlet-singlet annihilation could be reduced with strong coupling.

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