Optical excitations of quasi-one-dimensional systems: carbon nanotubes versus polymers and semiconductor wires (Articolo in rivista)

Type

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

Label

• Optical excitations of quasi-one-dimensional systems: carbon nanotubes versus polymers and semiconductor wires (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Alternative label

• Prezzi, D; Molinari, E (2006)
  Optical excitations of quasi-one-dimensional systems: carbon nanotubes versus polymers and semiconductor wires
  
  (literal)

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

• Prezzi, D; Molinari, E (literal)

Pagina inizio

• 3602 (literal)

Pagina fine

• 3610 (literal)

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

• 203 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• CNR, INFM, Natl Res Ctr NanoStruct & BioSyst Surfaces S3, I-41100 Modena, Italy; Univ Modena, Dipartimento Fis, I-41100 Modena, Italy (literal)

Titolo

• Optical excitations of quasi-one-dimensional systems: carbon nanotubes versus polymers and semiconductor wires (literal)

Abstract

• We review the main characteristics of optical excitations of semiconductor nanotubes, as obtained from accurate ab-initio theories and model calculations as well as experimental evidence, and discuss them in light of the previous understanding of other quasi-one-dimensional semiconducting systems. We point out striking similarities of nanotubes with III-V quantum wires and conjugated polymers, especially (i) the clear excitonic nature of absorption, very far from the single-particle behaviour; (ii) its manifestations in optical spectra, where excitonic peaks are accompanied by a strong intensity reduction at the onset of the free-particle continuum; (iii) the strategies that allow experimental access to exciton binding energies. The recent theoretical and experimental evidence obtained on semiconducting single-walled nanotubes converges quantitatively to a picture of strongly bound excitons (about 0.3-1.0 eV for nanotubes with 0.4-1.0 nm diameter). We discuss its implications and list a few open issues of relevance to fundamental understanding and optoelectronic applications. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. (literal)

Prodotto di

• Teoria e simulazione di materiali nanostrutturati (MD.P06.012.001) (Modulo)

Autore CNR

• ELISA MOLINARI (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Optical excitations of quasi-one-dimensional systems: carbon nanotubes versus polymers and semiconductor wires" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ELISA MOLINARI (Unità di personale esterno)

Prodotto

• Teoria e simulazione di materiali nanostrutturati (MD.P06.012.001) (Modulo)

Insieme di parole chiave di

• Keywords of "Optical excitations of quasi-one-dimensional systems: carbon nanotubes versus polymers and semiconductor wires" (Insieme di parole chiave)