Dendron growth from vertically aligned single-walled carbon nanotube thin layer arrays for photovoltaic devices

Mark Bissett, Ingo Koper, Jamie Quinton, Joseph Shapter

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)

    Abstract

    Single-walled carbon nanotube arrays attached to conductive transparent electrodes have previously shown promise for use in photovoltaic devices, whilst still retaining light transmission. Here, chemical modification of these thin (<200 nm) arrays with PAMAM-type dendrons has been undertaken to enhance the photoresponse of these devices. The effect of modification on the electrode was measured by differential pulse voltammetry to detect the dendrons, and the effect on the nanotubes was measured by Raman spectroscopy. Solar simulator illumination of the cells was performed to measure the effect of the nanotube modification on the cell power, and determine the optimal modification. Electrochemical impedance spectroscopy was also used to investigate the equivalent electronic circuit elements of the cells. The optimal dendron modification occurred with the second generation (G-2.0), which gave a 70% increase in power over the unmodified nanotube array.

    Original languageEnglish
    Pages (from-to)6059-6064
    Number of pages6
    JournalPhysical Chemistry Chemical Physics
    Volume13
    Issue number13
    DOIs
    Publication statusPublished - 7 Apr 2011

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