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    Langmuir-Blodgett assembly of ultra-large graphene oxide films for transparent electrodes

    Year: 2012

    Journal: Trans. Nonferrous Met. Soc. China, 2012, 22 (10), 2504-2511, 20131009

    Authors: Qing-bin Zheng, Li-fang Shi, Jun-he Yang

    Organizations: School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; Department of Mechanical Engineering, Hong Kong University of Science and Technology, Hong Kong, China

    Monolayer ultra-large graphene oxide (UL-GO) sheets with diameter up to about 100 μm were synthesized based on a chemical method. Transparent conductive films were produced using the UL-GO sheets that were deposited layer-by-layer on a substrate by the Langmuir-Blodgett (L-B) assembly technique. The films produced from UL-GO sheets with a close-packed flat structure exhibit exceptionally high electrical conductivity and transparency after thermal reduction. A remarkable sheet resistance of 605 ωsq at 86% transparency is obtained, which outperforms the graphene films grown on a Ni substrate by chemical vapor deposition. The technique used to produce transparent conductive films is facile, inexpensive and tunable for mass production.