Surface Condition and Conductance of Graphene in Redox Process

Oh Hun Gwon; Jong Yun Kim; Seok-Ju Kang; Hye Ryung Byun; Young-Jun Yu

doi:10.5757/ASCT.2021.30.6.183

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Research Paper

Applied Science and Convergence Technology 2021; 30(6): 183-185

Published online November 30, 2021

https://doi.org/10.5757/ASCT.2021.30.6.183

Surface Condition and Conductance of Graphene in Redox Process

Oh Hun Gwon^a , Jong Yun Kim^b , Seok-Ju Kang^b , Hye Ryung Byun^b , and Young-Jun Yu^{a , b , ∗}

^aDepartment of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
^bInstitute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea

Correspondence to:E-mail: yjyu@cnu.ac.kr

Received: October 5, 2021; Revised: October 9, 2021; Accepted: October 15, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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Abstract

In this study, we investigated the redox process occurring on graphene with an H₂SO₄ electrolyte gating. The redox process occurring on graphene was studied by observing the variation in the conductance of graphene. By performing electric force microscopy measurements, we also observed the surface condition of graphene leading oxidation and its role as a seed for adsorbing undesired residues, which results in conductance suppression.

Keywords: Graphene, Graphene oxide, Electrolyte gate, Oxidation, Reduction, Redox