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Thermal stability of epitaxial graphene electrodes for conductive polymer nanofiber devices

Kyung Ho Kim (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Samuel Lara-Avila (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Hans He (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Hojin Kang ; Yung Woo Park ; Rositsa Yakimova ; Sergey Kubatkin (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Crystals (2073-4352). Vol. 7 (2017), 12,
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Carbon electronics; Carbonization; Epitaxial graphene on SiC; Graphene; Graphene electrodes; Organic electronics; Polyaniline nanofibers; Polymer nanofibers



Denna post skapades 2018-01-02. Senast ändrad 2018-01-19.
CPL Pubid: 254217

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Nanoteknik

Chalmers infrastruktur