Thermal Stability of Epitaxial Graphene Electrodes for Conductive Polymer Nanofiber Devices

Autor: Kyung Ho Kim, Samuel Lara-Avila, Hans He, Hojin Kang, Yung Woo Park, Rositsa Yakimova, Sergey Kubatkin
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Crystals, Vol 7, Iss 12, p 378 (2017)
Druh dokumentu: article
ISSN: 2073-4352
DOI: 10.3390/cryst7120378
Popis: 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.
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