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Improvement of Electrical Conductivity and Transparency

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Graphene for Transparent Conductors

Abstract

Transparent conductors (TCs) made from as-deposited reduced graphene oxide (rGO) sheets significantly underperform those made from the chemical vapor deposition (CVD)-grown graphene in terms of optoelectrical properties because of (i) the inherently inferior electrical conductivities of rGO, (ii) the remaining oxygenated functional groups, and (iii) the intersheet junctions with high contact resistance between the rGO sheets. To further improve the electrical conductivities of graphene or graphene oxide (GO)-based transparent conductive films (TCFs), several approaches have been taken, such as chemical doping, hybridization, and using large-size GO sheets. Doping is achieved either through surface transfer doping or substitutional doping. One of the most effective approaches to reduce the number of intersheet tunneling barriers is producing large-size graphene sheets. Another successful approach is to bridge these intersheet junctions with 1D highly conducting nanofillers, such as single-walled nanotubes (SWNTs), metal nanowire (NW), and nanogrids that can facilitate the restoration of the inherent electrical conductivities while sacrificing a little of the transparency of graphene.

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Authors and Affiliations

  1. Leibniz Institute of Polymer Research Dresden, Dresden, Germany

    Qingbin Zheng

  2. Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR

    Jang-Kyo Kim

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  1. Qingbin Zheng
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  2. Jang-Kyo Kim
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Correspondence to Qingbin Zheng .

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Zheng, Q., Kim, JK. (2015). Improvement of Electrical Conductivity and Transparency. In: Graphene for Transparent Conductors., vol 23. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-2769-2_4

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