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http://dx.doi.org/10.3740/MRSK.2019.29.5.311

Enhancement of Electrical Conductivity in Silver Nanowire Network for Transparent Conducting Electrode using Copper Electrodeposition  

Ji, Hanna (Department of Materials Science and Engineering, Hanbat National University)
Jang, Jiseong (Department of Materials Science and Engineering, Hanbat National University)
Lee, Sangyeob (Department of Materials Science and Engineering, Hanbat National University)
Chung, Choong-Heui (Department of Materials Science and Engineering, Hanbat National University)
Publication Information
Korean Journal of Materials Research / v.29, no.5, 2019 , pp. 311-316 More about this Journal
Abstract
Transparent conducting electrodes are essential components in various optoelectrical devices. Although indium tin oxide thin films have been widely used for transparent conducting electrodes, silver nanowire network is a promising alternative to indium tin oxide thin films owing to its lower processing cost and greater suitability for flexible device application. In order to widen the application of silver nanowire network, the electrical conductance has to be improved while maintaining high optical transparency. In this study, we report the enhancement of the electrical conductance of silver nanowire network transparent electrodes by copper electrodeposition on the silver nanowire networks. The electrodeposited copper lowered the sheet resistance of the silver nanowire networks from $21.9{\Omega}{\square}$ to $12.6{\Omega}{\square}$. We perform detailed X-ray diffraction analysis revealing the effect of the amount of electrodeposited copper-shell on the sheet resistance of the core-shell(silver/copper) nanowire network transparent electrodes. From the relationship between the cross-sectional area of the copper-shell and the sheet resistance of the transparent electrodes, we deduce the electrical resistivity of electrodeposited copper to be approximately 4.5 times that of copper bulk.
Keywords
silver nanowire; transparent conducting electrode; electrodeposition;
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