Physics – Condensed Matter – Materials Science
Scientific paper
2007-06-06
Physics
Condensed Matter
Materials Science
5 pages, 3 figures
Scientific paper
10.1103/PhysRevB.77.041404
We investigate from first principles the optoelectronic properties of nanometer-sized armchair graphene nanoribbons (GNRs). We show that many-body effects are essential to correctly describe both energy gaps and optical response. As a signature of the confined geometry, we observe strongly bound excitons dominating the optical spectra, with a clear family dependent binding energy. Our results demonstrate that GNRs constitute 1D nanostructures whose absorption and luminescence performance can be controlled by changing both family and edge termination.
Marini Andrea
Molinari Elisa
Prezzi Deborah
Ruini Alice
Varsano Daniele
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