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In this study, we investigate the impact of thermal annealing on the electrical characteristics of epitaxial graphene field effect transistors. Top gated devices were fabricated from graphene obtained on silicon carbide (SiC) substrate. Thanks to an annealing at 300°C, the performance of the devices was enhanced by a factor of 90. The maximal transconductance reached really high values such as 5900μS/μm...
We have fabricated and characterized the field effect transistors having epitaxial-graphene channel grown on Si substrates. Epitaxial graphene is usually formed on SiC substrates by ultrahigh-vacuum (UHV) annealing. We used an approach to grow 3C-SiC(111) on Si substrates and subsequently to anneal it in UHV to make few layers of graphene on the sample surface. Backgate transistors using the SiC layer...
Graphene holds great promise for future electronic technology. It has very high mobility even for thin films, and is compatible with high-k dielectrics. Thus while it is too early to speculate on graphene replacing silicon as the material of choice for electronics, the potential of carbon based devices should not be underestimated.
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