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
[1] Cai, J. et al. (2010), Nature 466, 470–473
[2] Chen, Y.-C et al. (2013), ACS Nano 7, 7, 6123–6128
*JO and MC acknowledge funding by the Swiss Nanoscience Institute.
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Presenters
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Jan Overbeck
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland