We investigate from first principles the electronic and optical properties of edge-modulated armchair graphene nanoribbons, including both quasiparticle corrections and excitonic effects. Exploiting the oscillating behavior of the ribbon energy gap, we show that minimal width-modulations are sufficient to obtain confinement of both electrons and holes, thus forming optically active quantum dots with unique properties, such as the coexistence of dotlike and extended excitations and the fine tunability of optical spectra, with great potential for optoelectronic applications.

Quantum dot states and optical excitations of edge-modulated graphene nanoribbons / D., Prezzi; D., Varsano; Ruini, Alice; Molinari, Elisa. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - ELETTRONICO. - 84:(2011), pp. 041401-1-041401-4. [10.1103/PhysRevB.84.041401]

Quantum dot states and optical excitations of edge-modulated graphene nanoribbons

RUINI, Alice;MOLINARI, Elisa
2011

Abstract

We investigate from first principles the electronic and optical properties of edge-modulated armchair graphene nanoribbons, including both quasiparticle corrections and excitonic effects. Exploiting the oscillating behavior of the ribbon energy gap, we show that minimal width-modulations are sufficient to obtain confinement of both electrons and holes, thus forming optically active quantum dots with unique properties, such as the coexistence of dotlike and extended excitations and the fine tunability of optical spectra, with great potential for optoelectronic applications.
2011
84
041401-1
041401-4
Quantum dot states and optical excitations of edge-modulated graphene nanoribbons / D., Prezzi; D., Varsano; Ruini, Alice; Molinari, Elisa. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - ELETTRONICO. - 84:(2011), pp. 041401-1-041401-4. [10.1103/PhysRevB.84.041401]
D., Prezzi; D., Varsano; Ruini, Alice; Molinari, Elisa
File in questo prodotto:
File Dimensione Formato  
prez+11prb.pdf

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 349.44 kB
Formato Adobe PDF
349.44 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/668245
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 61
  • ???jsp.display-item.citation.isi??? 60
social impact