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arXiv · 2607.16461

Quantitative Theory for the Amplitude of Fluorescence Quantum Beats from Geminate Triplet-Pair Fusion

Zachary Rex·Bách Ph\d{a}m Xuân·Gerald Curran III·Ivan Biaggio
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Abstract

We derive the amplitude of quantum-beats in the fluorescence from geminate triplet-exciton fusion in rubrene and tetracene from the full set of parameters that characterize triplet exciton dynamics. We find that the amplitude depends on the fission time in tetracene, but does not do so in rubrene, where it is determined by the dimensionality of triplet transport. Kinetic Monte Carlo simulations reproduce the experimental data in both materials, for a fission time of the order of 200 ps and isotropic triplet transport int tetracene, and for a triplet hopping time along the herringbone axis of 250 ps and anisotropic transport in rubrene.

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Zachary Rex, Bách Ph\d{a}m Xuân, Gerald Curran III, Ivan Biaggio. 2026-07-17. Quantitative Theory for the Amplitude of Fluorescence Quantum Beats from Geminate Triplet-Pair Fusion. https://arxiv.org/abs/2607.16461

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