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dc.contributor.authorFruchtman, Amir
dc.contributor.authorGómez-Bombarelli, Rafael
dc.contributor.authorLovett, Brendon W.
dc.contributor.authorGauger, Erik M.
dc.identifier.citationFruchtman , A , Gómez-Bombarelli , R , Lovett , B W & Gauger , E M 2016 , ' Photocell optimization using dark state protection ' , Physical Review Letters , vol. 117 , no. 20 , 203603 , pp. 1-6 .
dc.identifier.otherPURE: 246457827
dc.identifier.otherPURE UUID: eaf391c4-7ed8-4e43-adeb-39505bac3fbd
dc.identifier.otherScopus: 84994852206
dc.identifier.otherORCID: /0000-0001-5142-9585/work/47136544
dc.identifier.otherWOS: 000387544200004
dc.descriptionThis work was supported by the Leverhulme Trust (RPG-080). EMG is supported by the Royal Society of Edinburgh/Scottish Government. RGB thanks Samsung Advanced Institute of Technology for funding. AF thanks the Anglo-Israeli association and the Anglo-Jewish association for funding.en
dc.description.abstractConventional photocells suffer a fundamental efficiency threshold imposed by the principle of detailed balance, reflecting the fact that good absorbers must necessarily also be fast emitters. This limitation can be overcome by "parking" the energy of an absorbed photon in a dark state which neither absorbs nor emits light. Here we argue that suitable dark states occur naturally as a consequence of the dipole-dipole interaction between two proximal optical dipoles for a wide range of realistic molecular dimers. We develop an intuitive model of a photocell comprising two light-absorbing molecules coupled to an idealized reaction centre, showing asymmetric dimers are capable of providing a significant enhancement of light-to-current conversion under ambient conditions. We conclude by describing a road map for identifying suitable molecular dimers for demonstrating this effect by screening a very large set of possible candidate molecules.
dc.relation.ispartofPhysical Review Lettersen
dc.rights© 2016, American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectQC Physicsen
dc.subjectT Technologyen
dc.titlePhotocell optimization using dark state protectionen
dc.typeJournal itemen
dc.contributor.sponsorThe Leverhulme Trusten
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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