Characteristics of oxidized graphene using KMnO4/H2SO4 solution

Yeojin Choi; SeungMun Back; YuNa Lee; SunJin An

doi:10.1117/12.2648211

15 March 2023 Characteristics of oxidized graphene using KMnO₄/H₂SO₄ solution

Yeojin Choi, SeungMun Back, YuNa Lee, SunJin An

Proceedings Volume 12430, Quantum Sensing and Nano Electronics and Photonics XIX; 1243015 (2023) https://doi.org/10.1117/12.2648211
Event: SPIE OPTO, 2023, San Francisco, California, United States

Conference Poster

Abstract

We describe the electrical characteristics of graphene by chemical vapor deposition and oxidized using a solution of KMnO₄/H₂SO₄. It was possible to successfully oxidize graphene without any pores or substrate separation. The electrical resistance of the oxidized graphene (OG) rose when the H₂SO₄ concentration was raised. Due to direct tunneling via the interfaces between the sp² and sp³ regions, OG in particular exhibits a nonlinear I-V curve resembling that of diode. The oxygen functional groups in the OG rose as the concentration of H₂SO₄ increased. Additionally, it was discovered that the average distance between faults in the OG had decreased.

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Yeojin Choi, SeungMun Back, YuNa Lee, and SunJin An "Characteristics of oxidized graphene using KMnO₄/H₂SO₄ solution", Proc. SPIE 12430, Quantum Sensing and Nano Electronics and Photonics XIX, 1243015 (15 March 2023); https://doi.org/10.1117/12.2648211

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