One-step sub-10 μm patterning of carbon-nanotube thin films for transparent conductor applications

Norihiro Fukaya, Dong Young Kim, Shigeru Kishimoto, Suguru Noda, Yutaka Ohno

    Research output: Contribution to journalArticle

    50 Citations (Scopus)

    Abstract

    We propose a technique for one-step micropatterning of as-grown carbon-nanotube films on a plastic substrate with sub-10 μm resolution on the basis of the dry transfer process. By utilizing this technique, we demonstrated the novel high-performance flexible carbon-nanotube transparent conductive film with a microgrid structure, which enabled improvement of the performance over the trade-off between the sheet resistance and transmittance of a conventional uniform carbon-nanotube film. The sheet resistance was reduced by 46% at its maximum by adding the microgrid, leading to a value of 53 ω/sq at a transmittance of 80%. We also demonstrated easy fabrication of multitouch projected capacitive sensors with 12 × 12 electrodes. The technique is quite promising for energy-saving production of transparent conductor devices with 100% material utilization.

    Original languageEnglish
    Pages (from-to)3285-3293
    Number of pages9
    JournalACS Nano
    Volume8
    Issue number4
    DOIs
    Publication statusPublished - 2014 Apr 22

    Fingerprint

    Carbon Nanotubes
    Carbon nanotubes
    conductors
    Sheet resistance
    carbon nanotubes
    Thin films
    transmittance
    thin films
    Capacitive sensors
    Conductive films
    Energy conservation
    plastics
    Plastics
    Fabrication
    Electrodes
    fabrication
    electrodes
    sensors
    Substrates
    energy

    Keywords

    • carbon nanotube
    • flexible
    • micropatterning
    • touch sensor
    • transparent conductive film

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Engineering(all)
    • Materials Science(all)

    Cite this

    One-step sub-10 μm patterning of carbon-nanotube thin films for transparent conductor applications. / Fukaya, Norihiro; Kim, Dong Young; Kishimoto, Shigeru; Noda, Suguru; Ohno, Yutaka.

    In: ACS Nano, Vol. 8, No. 4, 22.04.2014, p. 3285-3293.

    Research output: Contribution to journalArticle

    Fukaya, Norihiro ; Kim, Dong Young ; Kishimoto, Shigeru ; Noda, Suguru ; Ohno, Yutaka. / One-step sub-10 μm patterning of carbon-nanotube thin films for transparent conductor applications. In: ACS Nano. 2014 ; Vol. 8, No. 4. pp. 3285-3293.
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