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Issue 46, 2016
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Dark states enhance the photocell power via phononic dissipation

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The high efficiency of the photon-to-charge conversion process found in photosynthetic complexes has inspired researchers to explore a new route for designing artificial photovoltaic materials. Quantum coherence can provide a mean to surpass the Shockley–Quiesser device concept limit by reducing the radiative recombination. Taking inspiration from these new discoveries, we consider a linearly-aligned system as a light-harvesting antennae composed of two-level optical emitters coupled with each other by dipole–dipole interactions. Our simulations show that the certain dark states can enhance the power with the aid of intra-band phononic dissipation. Due to cooperative effects, the output power will be improved when incorporating more emitters in the linear system.

Graphical abstract: Dark states enhance the photocell power via phononic dissipation

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Publication details

The article was received on 03 Sep 2016, accepted on 07 Nov 2016 and first published on 07 Nov 2016

Article type: Paper
DOI: 10.1039/C6CP06098F
Citation: Phys. Chem. Chem. Phys., 2016,18, 31845-31849
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    Dark states enhance the photocell power via phononic dissipation

    Y. Zhang, A. Wirthwein, F. H. Alharbi, G. S. Engel and S. Kais, Phys. Chem. Chem. Phys., 2016, 18, 31845
    DOI: 10.1039/C6CP06098F

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