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Microwave transmission in graphene oxide

: Yoon, H.S.; Kim, W.K.; Jung, Y.M.; Cho, J.H.; Kim, D.H.; Song, I.S.; Choi, J.H.; Baik, S.; Jun, S.C.


Nanotechnology 24 (2013), No.1, Art.015201, 6 pp.
ISSN: 0957-4484
ISSN: 1361-6528
Journal Article
Fraunhofer HHI ()

We investigated the radio-frequency transmission properties of reduced graphene oxide (GO) sheets including contact effects with the metal electrodes. GO sheets were prepared by dielectrophoresis and their structural characteristics were analyzed by x-ray photoelectron spectroscopy and Raman spectroscopy. The contact resistance was much higher than the intrinsic resistance over the entire frequency range, thus the contact resistance was considered as a dominant component of impedance in the radio-frequency regime. In the radio-frequency regime, GO sheets showed a drastic decrease in impedance based on a consistent decrease in the intrinsic and contact resistance. These results support the potential of GO as a radio-frequency interconnector with a solution-based fabrication method.