Conductive micropatterns prepared by laser-induced reduction of graphene oxide

Akira Watanabe, Jinguang Cai, Sayaka Ogawa, Eiji Aoyagi, Shun Ito

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    A conductive film and the micropattern were prepared by laser-induced reduction of graphene oxide (GO). A 532 nm laser beam was scanned on a film made from a GO dispersion solution using a galvano-scanner system. The influences of the laser irradiation conditions such as laser power, scan speed, and atmosphere on the chemical structure changes of a reduced graphene oxide (rGO) were studied by micro-Raman spectroscopy. The Raman scattering intensities of D, G, and 2D bands were remarkably influenced by the laser irradiation conditions. The formation of a few-layer graphene plane structure was suggested by a low ratio of intensities of D/G bands (ID/IG) and the shape of 2D band in the Raman spectra. The surface resistivity was decreased with increasing in the laser power corresponding to the decrease of the ID/IG ratio in the laser-induced reduction under an inert gas (Ar) atmosphere. Conductive rGO micro-grid structures were fabricated by laser direct writing using a GO film in Ar.

    Original languageEnglish
    Pages (from-to)447-450
    Number of pages4
    JournalJournal of Photopolymer Science and Technology
    Volume31
    Issue number3
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Conductive grid structure
    • Graphene oxide
    • Laser direct writing
    • Laser-induced reduction
    • Reduced graphene oxide

    ASJC Scopus subject areas

    • Polymers and Plastics
    • Organic Chemistry
    • Materials Chemistry

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