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    A highly efficient synthetic process of graphene films with tunable optical properties

    Year: 2014

    Journal: APPLIED SURFACE SCIENCE, Vol. 314, p 71-77, 20150722

    Authors: Han, Feng; Yang, Shuming; Jing, Weixuan; Jiang, Kyle; Jiang, Zhuangde; Liu, Huan; Li, Lei

    Organizations: Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China; Univ Birmingham, Sch Mech Engn, Birmingham B15 2TT, W Midlands, England

    The paper reports an effective LB-based process to produce graphene oxide (GO). Uniform and controlled graphene oxide (GO) films were deposited on substrates by a simple and high-efficient Langmuir-Blodgett (LB)-based method. The influence of thermal reduction on GO films was systematically characterized and the annealing temperature of 800 degrees C was considered the most effective for reduction of GO. The optical and electrical properties were investigated for different reduced GO films to obtain the excellent sheet resistances of 440-620 Omega/sq with 60-70% range of light transparencies. A tunable surface wettability of GO films was found after heat treatment. (C) 2014 Elsevier B.V. All rights reserved.