Exciton-dominated optical response of ultra-narrow graphene nanoribbons (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Exciton-dominated optical response of ultra-narrow graphene nanoribbons (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1038/ncomms5253 (literal)

Alternative label

• Richard Denk [1], Michael Hohage [1], Peter Zeppenfeld [1], Jinming Cai [2], Carlo A. Pignedoli [2] , Hajo Söde [2], Roman Fasel [2,3], Xinliang Feng [4], Klaus Müllen [4], Shudong Wang [5], Deborah Prezzi [5], Andrea Ferretti [5], Alice Ruini [5], Elisa Molinari [5], Pascal Ruffieux [2] (2014)
  Exciton-dominated optical response of ultra-narrow graphene nanoribbons
  in Nature communications
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Richard Denk [1], Michael Hohage [1], Peter Zeppenfeld [1], Jinming Cai [2], Carlo A. Pignedoli [2] , Hajo Söde [2], Roman Fasel [2,3], Xinliang Feng [4], Klaus Müllen [4], Shudong Wang [5], Deborah Prezzi [5], Andrea Ferretti [5], Alice Ruini [5], Elisa Molinari [5], Pascal Ruffieux [2] (literal)

Rivista

• Nature communications (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 4253 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• [1] Institute of Experimental Physics, Johannes Kepler University, 4040 Linz, Austria [2] Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland [3] Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland [4] Max Planck Institute for Polymer Research, 55128 Mainz, Germany [5] CNR-Nanoscience Institute, S3 Center, 41125 Modena, Italy (literal)

Titolo

• Exciton-dominated optical response of ultra-narrow graphene nanoribbons (literal)

Abstract

• Narrow graphene nanoribbons exhibit substantial electronic bandgaps and optical properties fundamentally different from those of graphene. Unlike graphene--which shows a wavelength-independent absorbance for visible light--the electronic bandgap, and therefore the optical response, of graphene nanoribbons changes with ribbon width. Here we report on the optical properties of armchair graphene nanoribbons of width N=7 grown on metal surfaces. Reflectance difference spectroscopy in combination with ab initio calculations show that ultranarrow graphene nanoribbons have fully anisotropic optical properties dominated by excitonic effects that sensitively depend on the exact atomic structure. For N=7 armchair graphene nanoribbons, the optical response is dominated by absorption features at 2.1, 2.3 and 4.2 eV, in excellent agreement with ab initio calculations, which also reveal an absorbance of more than twice the one of graphene for linearly polarized light in the visible range of wavelengths. (literal)

Prodotto di

• Teoria e simulazione di materiali nanostrutturati (MD.P06.012.003) (Modulo)

Autore CNR

• DEBORAH PREZZI (Unità di personale interno)
• ELISA MOLINARI (Unità di personale esterno)
• ANDREA FERRETTI (Unità di personale interno)
• Shudong WANG (Persona)
• ALICE RUINI (Persona)

Incoming links:

Autore CNR di

• ALICE RUINI (Persona)
• ELISA MOLINARI (Unità di personale esterno)
• Shudong WANG (Persona)
• DEBORAH PREZZI (Unità di personale interno)
• ANDREA FERRETTI (Unità di personale interno)

Prodotto

• Teoria e simulazione di materiali nanostrutturati (MD.P06.012.003) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nature communications (Rivista)