Delocalized quantum states enhance photocell efficiency

Yiteng Zhang, Sangchul Oh, Fahhad Alharbi, Gregory S. Engelc, Sabre Kais

Research output: Contribution to journalArticle

32 Citations (Scopus)


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. This journal is

Original languageEnglish
Pages (from-to)5743-5750
Number of pages8
JournalPhysical Chemistry Chemical Physics
Issue number8
Publication statusPublished - 2015


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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