Electrical transport and field-effect transistors using inkjet-printed SWCNT films having different functional side groups

E. Gracia-Espino, G. Sala, F. Pino, N. Halonen, Juho Luomahaara, J. Mäklin, G. Tóth, K. Kordás, H. Jantunen, M. Terrones, Panu Helistö, Heikki Seppä, P. M. Ajayan, R. Vajtai (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    62 Citations (Scopus)

    Abstract

    The electrical properties of random networks of single-wall carbon nanotubes (SWNTs) obtained by inkjet printing are studied. Water-based stable inks of functionalized SWNTs (carboxylic acid, amide, poly(ethylene glycol), and polyaminobenzene sulfonic acid) were prepared and applied to inkjet deposit microscopic patterns of nanotube films on lithographically defined silicon chips with a back-side gate arrangement. Source−drain transfer characteristics and gate-effect measurements confirm the important role of the chemical functional groups in the electrical behavior of carbon nanotube networks. Considerable nonlinear transport in conjunction with a high channel current on/off ratio of ∼70 was observed with poly(ethylene glycol)-functionalized nanotubes. The positive temperature coefficient of channel resistance shows the nonmetallic behavior of the inkjet-printed films. Other inkjet-printed field-effect transistors using carboxyl-functionalized nanotubes as source, drain, and gate electrodes, poly(ethylene glycol)-functionalized nanotubes as the channel, and poly(ethylene glycol) as the gate dielectric were also tested and characterized.
    Original languageEnglish
    Pages (from-to)3318-3324
    Number of pages7
    JournalACS Nano
    Volume4
    Issue number6
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

    Keywords

    • carbon nanotubes
    • inkjet printing
    • percolation threshold
    • nanotube network
    • Schottky barrier

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  • Cite this

    Gracia-Espino, E., Sala, G., Pino, F., Halonen, N., Luomahaara, J., Mäklin, J., Tóth, G., Kordás, K., Jantunen, H., Terrones, M., Helistö, P., Seppä, H., Ajayan, P. M., & Vajtai, R. (2010). Electrical transport and field-effect transistors using inkjet-printed SWCNT films having different functional side groups. ACS Nano, 4(6), 3318-3324. https://doi.org/10.1021/nn1000723