Spatially Resolved Electronic Structures of Atomically Precise Armchair Graphene Nanoribbons
Open Access
- 17 December 2012
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 2 (1), 983
- https://doi.org/10.1038/srep00983
Abstract
Graphene has attracted much interest in both academia and industry. The challenge of making it semiconducting is crucial for applications in electronic devices. A promising approach is to reduce its physical size down to the nanometer scale. Here, we present the surface-assisted bottom-up fabrication of atomically precise armchair graphene nanoribbons (AGNRs) with predefined widths, namely 7-, 14- and 21-AGNRs, on Ag(111) as well as their spatially resolved width-dependent electronic structures. STM/STS measurements reveal their associated electron scattering patterns and the energy gaps over 1 eV. The mechanism to form such AGNRs is addressed based on the observed intermediate products. Our results provide new insights into the local properties of AGNRs, and have implications for the understanding of their electrical properties and potential applications.This publication has 42 references indexed in Scilit:
- Electronic Structure of Atomically Precise Graphene NanoribbonsACS Nano, 2012
- Zipping Up: Cooperativity Drives the Synthesis of Graphene NanoribbonsJournal of the American Chemical Society, 2011
- Raman 2D-Band Splitting in Graphene: Theory and ExperimentACS Nano, 2011
- Interface Properties of Metal/Graphene Heterostructures Studied by Micro-Raman SpectroscopyThe Journal of Physical Chemistry C, 2010
- Raman spectra of graphene ribbonsJournal of Physics: Condensed Matter, 2010
- Atomically precise bottom-up fabrication of graphene nanoribbonsNature, 2010
- Energy Band-Gap Engineering of Graphene NanoribbonsPhysical Review Letters, 2007
- Energy Gaps in Graphene NanoribbonsPhysical Review Letters, 2006
- Interpretation of Raman spectra of disordered and amorphous carbonPhysical Review B, 2000
- Density-functional method for very large systems with LCAO basis setsInternational Journal of Quantum Chemistry, 1997