Well-defined sub-nanometer graphene ribbons synthesized inside carbon nanotubes
- Author(s)
- Hans Kuzmany, Lei Shi, Miles Martinati, Sofie Cambré, Wim Wenseleers, Jenő Kürti, János Koltai, Gergő Kukucska, Kecheng Cao, Ute Kaiser, Takeshi Saito, Thomas Pichler
- Abstract
Graphene nanoribbons with sub-nanometer widths are extremely interesting for nanoscale electronics and devices as they combine the unusual transport properties of graphene with the opening of a band gap due to quantum confinement in the lateral dimension. Strong research efforts are presently paid to grow such nanoribbons. Here we show the synthesis of 6- and 7-armchair graphene nanoribbons, with widths of 0.61 and 0.74 nm, and excitonic gaps of 1.83 and 2.18 eV, by high-temperature vacuum annealing of ferrocene molecules inside single-walled carbon nanotubes. The growth of the so-obtained graphene nanoribbons is evidenced from atomic resolution electron microscopy, while their well-defined structure is identified by a combination of an extensive wavelength-dependent Raman scattering characterization and quantum-chemical calculations. These findings enable a facile and scalable approach leading to the controlled growth and detailed analysis of well-defined sub-nanometer graphene nanoribbons. (C) 2020 Elsevier Ltd. All rights reserved.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Sun Yat-sen University, University of Antwerp, Eötvös Loránd University Budapest, Universität Ulm, National Institute of Advanced Industrial Science and Technology (AIST)
- Journal
- Carbon
- Volume
- 171
- Pages
- 221-229
- No. of pages
- 9
- ISSN
- 0008-6223
- DOI
- https://doi.org/10.1016/j.carbon.2020.08.065
- Publication date
- 01-2021
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Keywords
- ASJC Scopus subject areas
- Chemistry(all), Materials Science(all)
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/welldefined-subnanometer-graphene-ribbons-synthesized-inside-carbon-nanotubes(7b485f3f-36c4-4f63-b636-2779e33a2e11).html