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30 September 2024 Inverted singlet–triplet materials for organic light-emitting diodes
Jinyao Xu, Naoya Aizawa
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Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 131220V (2024) https://doi.org/10.1117/12.3027235
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
Hund's multiplicity rule states that for a given electronic configuration, a higher spin state has a lower energy. This energetic ordering requires thermal activation of dark triplet excited states to bright singlet excited states to emit delayed fluorescence. Here we report an organic molecule that exhibits delayed fluorescence from energetically inverted singlet and triplet excited states.
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Jinyao Xu and Naoya Aizawa "Inverted singlet–triplet materials for organic light-emitting diodes", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 131220V (30 September 2024); https://doi.org/10.1117/12.3027235
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KEYWORDS
Organic light emitting diodes
Fluorescence
Electroluminescence
External quantum efficiency
Molecules
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