Electrochemistry and Photocurrent Response from Vertically-Aligned Chemically-Functionalized Single-Walled Carbon Nanotube Arrays

Mark Bissett, Joseph Shapter

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    The unique electronic properties of single walled carbon nanotubes (SWCNTs) can be used to generate a current response from visible light. Vertically aligned single walled carbon nanotube arrays were created on an optically transparent electrode (fluorine doped tin oxide coated glass, FTO) by a self-assembly process using the hydrophobicity of the nanotube side walls and chemical treatment of both the nanotubes and the FTO substrate. The electrode characteristics were explored using electrochemical approaches. The SWCNTs were further functionalized with light absorbing species such as dye or porphyrin. This led to arrays of SWCNTs chemically attached to the substrate that when exposed to visible light exhibited a prompt current response (∼5 μA/ cm2, ≤200 ms) and a voltage of ∼33 mV. This photoresponse behavior was investigated by modifying the attachment conditions and also the SWCNT treatment procedures.

    Original languageEnglish
    Pages (from-to)K53-K57
    Number of pages5
    JournalJournal of the Electrochemical Society
    Volume158
    Issue number3
    DOIs
    Publication statusPublished - 2011

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