Electropolymerized polythiophene photoelectrodes with density-controlled gold nanoparticles

Yukina Takahashi, Sakiko Taura, Tsuyoshi Akiyama, Sunao Yamada

    研究成果: Contribution to journalArticle査読

    32 被引用数 (Scopus)

    抄録

    A polythiophene thin film was fabricated on gold nanoparticle (AuNP)-deposited indium-tin-oxide (ITO) electrodes with electropolymerization, whereas AuNPs were predeposited on the ITO surface. A photocurrent via photoexcited polythiophene increased with AuNPs which was attributed to the localized surface plasmon resonance. Investigation of the AuNP-density dependence on the relative enhancement of photocurrent revealed the maximum effect at 14% of AuNP-density, while 68% of AuNP-density exhibited smaller photocurrent than the polythiophene electrode without AuNPs. We have revealed that the effects of AuNPs saturate in the fairly low density region, and that the excess AuNPs even in the range of submonolayer resulted in the decrement of photocurrents.

    本文言語英語
    ページ(範囲)9155-9160
    ページ数6
    ジャーナルLangmuir
    28
    24
    DOI
    出版ステータス出版済み - 6 19 2012

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 表面および界面
    • 分光学
    • 電気化学

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