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Issue 8, 2015
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Delocalized quantum states enhance photocell efficiency

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The high quantum efficiency of photosynthetic complexes has inspired researchers to explore new routes to utilize this process for photovoltaic devices. Quantum coherence has been demonstrated to play a crucial role in this process. Herein, we propose a three-dipole system as a model of a new photocell type which exploits the coherence among its three dipoles. We have proved that the efficiency of such a photocell is greatly enhanced by quantum coherence. We have also predicted that the photocurrents can be enhanced by about 49.5% in such a coherent coupled dipole system compared with the uncoupled dipoles. These results suggest a promising novel design aspect of photosynthesis-mimicking photovoltaic devices.

Graphical abstract: Delocalized quantum states enhance photocell efficiency

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Publication details

The article was received on 14 Nov 2014, accepted on 16 Jan 2015 and first published on 16 Jan 2015

Article type: Paper
DOI: 10.1039/C4CP05310A
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2015,17, 5743-5750
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    Delocalized quantum states enhance photocell efficiency

    Y. Zhang, S. Oh, F. H. Alharbi, G. S. Engel and S. Kais, Phys. Chem. Chem. Phys., 2015, 17, 5743
    DOI: 10.1039/C4CP05310A

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