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Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography

Nature Nanotechnology volume 3, pages 397401 (2008) | Download Citation

Abstract

The practical realization of nanoscale electronics faces two major challenges: the precise engineering of the building blocks and their assembly into functional circuits1. In spite of the exceptional electronic properties of carbon nanotubes2, only basic demonstration devices have been realized that require time-consuming processes3,4,5. This is mainly due to a lack of selective growth and reliable assembly processes for nanotubes. However, graphene offers an attractive alternative. Here we report the patterning of graphene nanoribbons and bent junctions with nanometre-precision, well-defined widths and predetermined crystallographic orientations, allowing us to fully engineer their electronic structure using scanning tunnelling microscope lithography. The atomic structure and electronic properties of the ribbons have been investigated by scanning tunnelling microscopy and tunnelling spectroscopy measurements. Opening of confinement gaps up to 0.5 eV, enabling room-temperature operation of graphene nanoribbon-based devices, is reported. This method avoids the difficulties of assembling nanoscale components and may prove useful in the realization of complete integrated circuits, operating as room-temperature ballistic electronic devices6,7.

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References

  1. 1.

    , & Carbon-based electronics. Nature Nanotech. 2, 605–615 (2007).

  2. 2.

    Molecular electronics with carbon nanotubes. Acc. Chem. Res. 35, 1026–1034 (2002).

  3. 3.

    , & Room-temperature transistor based on a single carbon nanotube. Nature 393, 49–52 (1998).

  4. 4.

    , , & Carbon nanotube intramolecular junctions. Nature 402, 273–276 (1999).

  5. 5.

    , , , & DNA-templated carbon nanotube field-effect transistor. Science 302, 1380–1382 (2003).

  6. 6.

    & Building blocks for integrated graphene circuits. Nano Lett. 7, 3253–3259 (2007).

  7. 7.

    et al. Intrinsic current–voltage characteristics of graphene nanoribbon transistors and effect of edge doping. Nano Lett. 7, 1469–1473 (2007).

  8. 8.

    & The rise of graphene. Nature Mater. 6, 183–191 (2007).

  9. 9.

    et al. Two-dimensional gas of massless Dirac fermions in graphene. Nature 438, 197–200 (2005).

  10. 10.

    , & Electronic structure and stability of semiconducting graphene nanoribbons. Nano Lett. 6, 2748–2754 (2006).

  11. 11.

    , & Energy gaps in graphene nanoribbons. Phys. Rev. Lett. 97, 216803 (2006).

  12. 12.

    , , & Energy band-gap engineering of graphene nanoribbons. Phys. Rev. Lett. 98, 206805 (2007).

  13. 13.

    , , & Graphene nano-ribbon electronics. Physica E 40, 228–232 (2007).

  14. 14.

    , & Nanofabrication by scanning probe microscope lithography: A review. J. Vac. Sci. Technol. B 23, 877–894 (2005).

  15. 15.

    et al. Nanometer-scale hole formation on graphite using a scanning tunneling microscope. Appl. Phys. Lett. 55, 1727–1729 (1989).

  16. 16.

    , & Controlled nanofabrication of highly oriented pyrolytic graphite with the scanning tunneling microscope. J. Phys. Chem. 96, 10089–10092 (1992).

  17. 17.

    & Long-range electronic perturbations caused by defects using scanning tunneling microscopy. Science 244, 559–562 (1989).

  18. 18.

    et al. Electron scattering in a multiwall carbon nanotube bend junction studied by scanning tunneling microscopy. Phys. Rev. B 74, 235422 (2006).

  19. 19.

    , , , & Atomic structure of graphene on SiO2. Nano Lett. 7, 1643–1648 (2007).

  20. 20.

    et al. Scattering and interference in epitaxial graphene. Science 317, 219–222 (2007).

  21. 21.

    et al. Electronic transport properties of individual chemically reduced graphene oxide sheets, Nano Lett. 7, 3499–3503 (2007).

  22. 22.

    & Tight-binding computation of the STM image of carbon nanotubes. Phys. Rev. Lett. 81, 5588–5591 (1998).

  23. 23.

    & Theory of the scanning tunneling microscope. Phys. Rev. B 31, 805–813 (1985).

  24. 24.

    , , , & Electronic structure of atomically resolved carbon nanotubes. Nature 391, 59–62 (1998).

  25. 25.

    et al. Electronic confinement and coherence in patterned epitaxial graphene. Science 312, 1191–1196 (2006).

  26. 26.

    et al. Phase-coherent transport in graphene quantum billiards. Science 317, 1530–1533 (2007).

  27. 27.

    & Effect of edge roughness in graphene nanoribbon transistors. Appl. Phys. Lett. 91, 73103 (2007).

  28. 28.

    et al. Integrating nanotechnology into a working storage device. Microelectron. Eng. 83, 1692–1697 (2006).

  29. 29.

    , & Cutting of multiwalled carbon nanotubes by a negative voltage tip of an atomic force microscope: A possible mechanism. Phys. Rev. B 68, 113406 (2003).

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Acknowledgements

This work was supported in Hungary by OTKA (Országos Tudományos Kutatási Alapprogramok) grant 67851 and OTKA-NKTH (Nemzeti Kutatási és Technológiai Hivatal) grant K67793.

Author information

Affiliations

  1. Research Institute for Technical Physics and Materials Science, H-1525 Budapest, Hungary

    • Levente Tapasztó
    • , Gergely Dobrik
    •  & László P. Biró
  2. Facultes Universitaire Notre Dame de la Paix, 61 Rue de Bruxelles, B-5000 Namur, Belgium

    • Philippe Lambin

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Contributions

L.T. conceived the experiments. L.T. and G.D. performed the experiments. L.T., P.L. and L.P.B. analysed the data. L.T. wrote the paper. All authors discussed the results and commented on the manuscript.

Corresponding author

Correspondence to Levente Tapasztó.

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DOI

https://doi.org/10.1038/nnano.2008.149

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