Characterization of Atomically Precise Graphene Nanoribbons by Raman Spectroscopy

ORAL

Abstract

Graphene nanoribbons (GNRs) exhibit an electronic bandgap due to the lateral confinement of charge carriers and edge effects. They can be fabricated by bottom-up on-surface synthesis from molecular precursors resulting in atomically precise structures [1]. This approach promises tunable optical and electronic properties [2]. We use Raman spectroscopy to characterize different types of GNRs and investigate their interaction with growth and devices substrates. In particular, we investigate new geometry-dependent signatures beyond the radial breathing like mode (RBLM) and how they are correlated with charge transport properties.

[1] Cai, J. et al. (2010), Nature 466, 470–473
[2] Chen, Y.-C et al. (2013), ACS Nano 7, 7, 6123–6128

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Presenters

  • Jan Overbeck

    Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland

Authors

  • Jan Overbeck

    Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland

  • Gabriela Borin Barin

    Empa, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland, EMPA

  • Colin R Daniels

    Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180, USA

  • Mickael Perrin

    Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland, EMPA

  • Oliver Braun

    Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland

  • Pascal Ruffieux

    Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland

  • Vincent Meunier

    Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180, USA, Physics, Rensselaer Polytechnic Institute, Rensselaer Polytechnic Institute

  • Roman Fasel

    Empa, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland, EMPA

  • Michel Calame

    Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland, EMPA