4.7 Article

Enhanced bimolecular exchange reaction through programmed coordination of a five-coordinate oxovanadium complex for efficient redox mediation in dye-sensitized solar cells

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DALTON TRANSACTIONS
卷 42, 期 45, 页码 16090-16095

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt51698a

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资金

  1. MEXT, Japan [24108739, 25107733, 25288056, 24225003]
  2. FIRST Program on Development of Organic Photovoltaics toward a Low-Carbon Society from JSPS
  3. Grants-in-Aid for Scientific Research [24108739, 25288056, 25107733] Funding Source: KAKEN

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Electrochemical reversibility and fast bimolecular exchange reaction found for VO(salen) gave rise to a highly efficient redox mediation to enhance the photocurrent of a dye-sensitized solar cell, leading to an excellent photovoltaic performance with a conversion efficiency of 5.4%. A heterogeneous electron-transfer rate constant at an electrode (k(0)) and a second-order rate constant for an electron self-exchange reaction (k(ex)) were proposed as key parameters that dominate the charge transport property, which afforded a novel design concept for the mediators based on their kinetic aspects.

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