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

Kenichi Oyaizu, Noriko Hayo, Yoshito Sasada, Fumiaki Kato, Hiroyuki Nishide

Research output: Contribution to journalArticle

15 Citations (Scopus)


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 (k0) 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.

Original languageEnglish
Pages (from-to)16090-16095
Number of pages6
JournalDalton Transactions
Issue number45
Publication statusPublished - 2013 Dec 7


ASJC Scopus subject areas

  • Inorganic Chemistry

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