Optical Properties and Charge-Transfer Excitations in Edge-Functionalized All-Graphene Nanojunctions (Articolo in rivista)

Type
Label
  • Optical Properties and Charge-Transfer Excitations in Edge-Functionalized All-Graphene Nanojunctions (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Cocchi C., D. Prezzi, A. Ruini, M. J. Caldas, and E. Molinari (2011)
    Optical Properties and Charge-Transfer Excitations in Edge-Functionalized All-Graphene Nanojunctions
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cocchi C., D. Prezzi, A. Ruini, M. J. Caldas, and E. Molinari (literal)
Pagina inizio
  • 1315 (literal)
Pagina fine
  • 1319 (literal)
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  • 2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • DOI: 10.1021/jz200472a (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Centro S3, CNR-Istituto Nanoscienze, I-41125 Modena, Italy Dipartimento di Fisica, Universit di Modena e Reggio Emilia, I-41125 Modena, Italy Instituto de Fisica, Universidade de So Paulo, 05508-900 So Paulo, SP, Brazil (literal)
Titolo
  • Optical Properties and Charge-Transfer Excitations in Edge-Functionalized All-Graphene Nanojunctions (literal)
Abstract
  • We investigate the optical properties of edge-functionalized graphene nanosystems, focusing on the formation of junctions and charge-transfer excitons. We consider a class of graphene structures that combine the main electronic features of graphene with the wide tunability of large polycyclic aromatic hydrocarbons. By investigating prototypical ribbon-like systems, we show that, upon convenient choice of functional groups, low-energy excitations with remarkable charge-transfer character and large oscillator strength are obtained. These properties can be further modulated through an appropriate width variation, thus spanning a wide range in the low-energy region of the UV–vis spectra. Our results are relevant in view of designing all-graphene optoelectronic nanodevices, which take advantage of the versatility of molecular functionalization, together with the stability and the electronic properties of graphene nanostructures. (literal)
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