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Crystals 2017, 7(12), 378; https://doi.org/10.3390/cryst7120378

Thermal Stability of Epitaxial Graphene Electrodes for Conductive Polymer Nanofiber Devices

1
Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg SE412-96, Sweden
2
National Physical Laboratory, Hampton Road, Teddington TW11 0LW, UK
3
Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
4
Institute of Applied Physics, Seoul National University, Seoul 08826, Korea
5
Department of Physics, Chemistry and Biology, Linkoping University, Linkoping SE581-83, Sweden
*
Authors to whom correspondence should be addressed.
Academic Editor: Helmut Cölfen
Received: 21 November 2017 / Revised: 5 December 2017 / Accepted: 11 December 2017 / Published: 14 December 2017
(This article belongs to the Special Issue Integration of 2D Materials for Electronics Applications)
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Abstract

We used large area, monolayer graphene epitaxially grown on SiC (0001) as contact electrodes for polymer nanofiber devices. Our fabrication process, which avoids polymer resist residues on the graphene surface, results in graphene-polyaniline nanofiber devices with Ohmic contacts and electrical conductivity comparable to that of Au-nanofiber devices. We further checked the thermal stability of the graphene contacts to polyaniline devices by annealing up to T = 800 °C, the temperature at which polyaniline nanofibers are carbonized but the graphene electrode remains intact. The thermal stability and Ohmic contact of polymer nanofibers are demonstrated here, which together with the chemical stability and atomic flatness of graphene, make epitaxial graphene on SiC an attractive contact material for future all-carbon electronic devices. View Full-Text
Keywords: graphene; graphene electrodes; epitaxial graphene on SiC; polymer nanofibers; polyaniline nanofibers; carbonization; organic electronics; carbon electronics graphene; graphene electrodes; epitaxial graphene on SiC; polymer nanofibers; polyaniline nanofibers; carbonization; organic electronics; carbon electronics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kim, K.H.; Lara-Avila, S.; He, H.; Kang, H.; Park, Y.W.; Yakimova, R.; Kubatkin, S. Thermal Stability of Epitaxial Graphene Electrodes for Conductive Polymer Nanofiber Devices. Crystals 2017, 7, 378.

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