Graphene nanoribbon heterojunctions
Cai J, Pignedoli CA, Talirz L, Ruffieux P, Soede H, Liang L, Meunier V, Berger R, Li R, Feng X, Muellen K, Fasel R (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 9
Pages Range: 896-900
Journal Issue: 11
Abstract
Despite graphene's remarkable electronic properties, the lack of an electronic bandgap severely limits its potential for applications in digital electronics. In contrast to extended films, narrow strips of graphene (called graphene nanoribbons) are semiconductors through quantum confinement, with a bandgap that can be tuned as a function of the nanoribbon width and edge structure. Atomically precise graphene nanoribbons can be obtained via a bottom-up approach based on the surface-assisted assembly of molecular precursors. Here we report the fabrication of graphene nanoribbon heterojunctions and heterostructures by combining pristine hydrocarbon precursors with their nitrogen-substituted equivalents. Using scanning probe methods, we show that the resulting heterostructures consist of seamlessly assembled segments of pristine (undoped) graphene nanoribbons (p-GNRs) and deterministically nitrogen-doped graphene nanoribbons (N-GNRs), and behave similarly to traditional p-n junctions. With a band shift of 0.5 eV and an electric field of 2×108 V m -1 at the heterojunction, these materials bear a high potential for applications in photovoltaics and electronics.
Involved external institutions
Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) / Swiss Federal Laboratories for Materials Science & Technology
Switzerland (CH)
Rensselaer Polytechnic Institute (RPI)
United States (USA) (US)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
Switzerland (CH)
Rensselaer Polytechnic Institute (RPI)
United States (USA) (US)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
How to cite
APA:
Cai, J., Pignedoli, C.A., Talirz, L., Ruffieux, P., Soede, H., Liang, L.,... Fasel, R. (2014). Graphene nanoribbon heterojunctions. Nature Nanotechnology, 9(11), 896-900. https://doi.org/10.1038/nnano.2014.184
MLA:
Cai, Jinming, et al. "Graphene nanoribbon heterojunctions." Nature Nanotechnology 9.11 (2014): 896-900.
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