Abstract

We developed a chemical route to produce graphene nanoribbons (GNR) with width below 10 nanometers, as well as single ribbons with varying widths along their lengths or containing lattice-defined graphene junctions for potential molecular electronics. The GNRs were solution-phase–derived, stably suspended in solvents with noncovalent polymer functionalization, and exhibited ultrasmooth edges with possibly well-defined zigzag or armchair-edge structures. Electrical transport experiments showed that, unlike single-walled carbon nanotubes, all of the sub–10-nanometer GNRs produced were semiconductors and afforded graphene field effect transistors with on-off ratios of about 10 7 at room temperature.

Keywords

GrapheneGraphene nanoribbonsMaterials scienceNanometreSemiconductorCarbon nanotubeZigzagNanotechnologyField-effect transistorTransistorOptoelectronicsPhysicsComposite material

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Publication Info

Year
2008
Type
article
Volume
319
Issue
5867
Pages
1229-1232
Citations
4737
Access
Closed

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Cite This

Xiaolin Li, Xinran Wang, Li Zhang et al. (2008). Chemically Derived, Ultrasmooth Graphene Nanoribbon Semiconductors. Science , 319 (5867) , 1229-1232. https://doi.org/10.1126/science.1150878

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DOI
10.1126/science.1150878