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arXiv · 1811.10131

Resonant confinement of excitonic polariton and ultra-efficient light harvest in artificial photosynthesis

Yong-Cong Chen·Bo Song·Anthony J. Leggett·Ping Ao·Xiaomei Zhu
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Abstract

We show that in the recent artificial light-harvesting experiment [Angewandte Chemie Intl. Ed. 55, 2759 (2016)] on organic nanocrystals self-assembled from difluoroboron chromophores, the spontaneous emission of an excited pigment should undergo a two-step process. It would first decay to an excitonic polariton confined by cavity resonance via strong photon-exciton coupling. The captive intermediate could then funnel the energy directly to doped acceptors, leading to the observed over 90% transfer efficiency at less than 1/1000 acceptor-donor ratio. Theoretical, parameter-free analyses are in quantitative agreement with the experiment.

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Yong-Cong Chen, Bo Song, Anthony J. Leggett, Ping Ao, Xiaomei Zhu. 2018-10-20. Resonant confinement of excitonic polariton and ultra-efficient light harvest in artificial photosynthesis. https://doi.org/10.1103/physrevlett.122.257402

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