Environment assisted and environment hampered efficiency at maximum power in a molecular photo cell
arXiv:2003.11564 · doi:10.1021/acs.jpcc.0c04581
Abstract
The molecular photo cell, i.e., a single molecule donor-acceptor complex, beside being technologically important, is a paradigmatic example of a many-body system operating in strong non-equilibrium. The quantum transport and the photo-voltaic energy conversion efficiency of the photocell, attached to two external leads, are investigated within the open quantum system approach by solving the Lindblad master equation. The interplay of the vibrational degrees of freedom corresponding to the molecules (via the electron-phonon interaction) and the environment (via dephasing) shows its signature in the efficiency at maximum power. We find vibration assisted electron transport in the medium to strong electron-phonon coupling regime when the system does not suffer dephasing. Exposure to dephasing hampers such a vibration assisted electron transport in a specific range of dephasing rate.
submitted for publication, comments are welcome
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Cited by in corpus (7)
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- Protecting coherence from the environment via Stark many-body localization in a Quantum-Dot Simulator
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- Thermodynamics of photoelectric devices
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