Kinetic control of electron transfer at doped zinc oxide/redox-active molecule interface for photocurrent rectification

Michio Suzuka, Shu Hara, Takashi Sekiguchi, Kenichi Oyaizu, Hiroyuki Nishide

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Reactivity of redox-active molecules for heterogeneous electron-transfer processes at the surface of doped zinc oxide substrates depended on their energy levels. The redox-active molecules with negative redox potentials displayed a reversible electrochemical response but those with positive redox potentials were characterized by slow electrode kinetics, which was attributed to more than three times larger heterogeneous electron-transfer rate constant for the former redox-active molecules. A photovoltaic cell using methyl viologen as an acceptor molecule, TEMPOL as a donor molecule, and the doped ZnO as the transparent conducting substrate gave high photovoltage, which was ascribed to the reactivity of the redox-active molecules at the doped ZnO surface.

    Original languageEnglish
    Pages (from-to)41-43
    Number of pages3
    JournalChemistry Letters
    Volume44
    Issue number1
    DOIs
    Publication statusPublished - 2015

    Fingerprint

    Zinc Oxide
    Photocurrents
    Molecules
    Kinetics
    Electrons
    Paraquat
    Photovoltaic cells
    Substrates
    Electron energy levels
    Oxidation-Reduction
    Rate constants
    Electrodes

    ASJC Scopus subject areas

    • Chemistry(all)

    Cite this

    Kinetic control of electron transfer at doped zinc oxide/redox-active molecule interface for photocurrent rectification. / Suzuka, Michio; Hara, Shu; Sekiguchi, Takashi; Oyaizu, Kenichi; Nishide, Hiroyuki.

    In: Chemistry Letters, Vol. 44, No. 1, 2015, p. 41-43.

    Research output: Contribution to journalArticle

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    AU - Hara, Shu

    AU - Sekiguchi, Takashi

    AU - Oyaizu, Kenichi

    AU - Nishide, Hiroyuki

    PY - 2015

    Y1 - 2015

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