Physics of the Solid State

, Volume 56, Issue 10, pp 2135–2145 | Cite as

Edge-modified zigzag-shaped graphene nanoribbons: Structure and electronic properties

  • V. A. Saroka
  • K. G. Batrakov
  • L. A. Chernozatonskii


Control of the band gap of graphene nanoribbons is an important problem for the fabrication of effective radiation detectors and transducers operating in different frequency ranges. The periodic edge-modified zigzag-shaped graphene nanoribbon (GNR) provides two additional parameters for controlling the band gap of these structures, i.e., two GNR arms. The dependence of the band gap E g on these parameters is investigated using the π-electron tight-binding method. For the considered nanoribbons, oscillations of the band gap E g as a function of the nanoribbon width are observed not only in the case of armchair-edge graphene nanoribbons (as for conventional graphene nanoribbons) but also for zigzag GNR edges. It is shown that the change in the band gap E g due to the variation in the length of one GNR arm is several times smaller than that due to the variation in the nanoribbon width, which provides the possibility for a smooth tuning of the band gap in the energy spectrum of the considered graphene nanoribbons.


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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • V. A. Saroka
    • 1
  • K. G. Batrakov
    • 1
  • L. A. Chernozatonskii
    • 2
  1. 1.Research Institute for Nuclear ProblemsBelarusian State UniversityMinskBelarus
  2. 2.Emanuel Institute of Biochemical PhysicsRussian Academy of SciencesMoscowRussia

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