Scientific Results

Reduction of graphene oxide films on Al foil for hybrid transparent conductive film applications

Year: 2013

Authors: Domingues S. H., Kholmanov I., Kim T. Y., Kim J. Y., Tan C., Chou H., Alieva Z. A., Piner R., Zarbin A. G., Ruoff R. S.

Autors Affiliation: Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin, 1 University Station C2200, Austin, TX 78712, USA; Department of Chemistry, Universidade Federal do Parana´, CP 19081, CEP 81531-990 Curitiba, PR, Brazil; CNR-IDASC Sensor Lab Department of Chemistry and Physics, University of Brescia, via Valotti, 9, Brescia 25133, Italy

Abstract: We report the reduction of graphene oxide (G-O) films on Al foil using hydrogen as a reducing agent generated during the etching of Al foil in an aqueous solution of hydrochloric acid (HCl). Complete etching of the Al substrate results in simultaneous reduction and a free standing film composed of stacked and overlapped reduced graphene oxide (RG-O) platelets. Generation of hydrogen at the G-O/Al interface increases the reduction efficiency of this method that is demonstrated in better electrical conductivity of the obtained films compared to the RG-O films reduced by the similar method but using remote Al foil in HCl solution and hydrazine reduced RG-O films. By transferring the free standing RG-O films onto Ag NW films, hybrid transparent conductive films (TCFs) with opto-electrical properties comparable to that of ITO films were obtained. (C) 2013 Elsevier Ltd. All rights reserved.

Journal/Review: CARBON

Volume: 63      Pages from: 454  to: 459

More Information: This work was supported by National Science Foundation (Grant #: DMR-1206986). A.J.G.Z. and S.H.D. Gratefully acknowledge the CNPq, INCT of Carbon Nanomaterials (CNPq), NENNAM (Pronex F. Araucaria/CNPq), and CAPES for the financial support.
DOI: 10.1016/j.carbon.2013.07.007

Citations: 41
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