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arXiv · 2404.00198

Extending the self-discharge time of Dicke quantum batteries using molecular triplets

Daniel J. Tibben·Enrico Della Gaspera·Joel van Embden·Philipp Reineck·James Q. Quach·Francesco Campaioli·Daniel E. Gómez
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Abstract

Quantum batteries, quantum systems for energy storage, have gained interest due to their potential scalable charging power density. A quantum battery proposal based on the Dicke model has been explored using organic microcavities, which enable a cavity-enhanced energy transfer process called superabsorption. However, energy storage lifetime in these devices is limited by fast radiative emission losses, worsened by superradiance. Here, we demonstrate a promising approach to extend the energy storage lifetime of Dicke quantum batteries using molecular triplet states. We examine a type of multi-layer microcavities where an active absorption layer transfers energy to the molecular triplets of a storage layer, identifying two regimes based on exciton-polariton resonances. We tested one of these mechanisms by fabricating and characterising five devices across a triplet-polariton resonance. We conclude by discussing potential optimisation outlooks for this class of devices.

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Daniel J. Tibben, Enrico Della Gaspera, Joel van Embden, Philipp Reineck, James Q. Quach, Francesco Campaioli, Daniel E. Gómez. 2024-03-30. Extending the self-discharge time of Dicke quantum batteries using molecular triplets. https://doi.org/10.1103/bhyh-53np

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