Role of defects on the gas sensing properties of carbon nanotubes thin films: experiment and theory (Articolo in rivista)

Type
Label
  • Role of defects on the gas sensing properties of carbon nanotubes thin films: experiment and theory (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.cplett.2004.02.038 (literal)
Alternative label
  • Valentini L., Mercuri F., Armentano I., Cantalini C., Picozzi S., Lozzi L., Santucci S., Sgamellotti A., Kenny J.M. (2004)
    Role of defects on the gas sensing properties of carbon nanotubes thin films: experiment and theory
    in Chemical physics letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Valentini L., Mercuri F., Armentano I., Cantalini C., Picozzi S., Lozzi L., Santucci S., Sgamellotti A., Kenny J.M. (literal)
Pagina inizio
  • 356 (literal)
Pagina fine
  • 361 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 384 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4-6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ Perugia, CNR, Inst ISTM, Dept Chem & Mol Sci & Technol, I-06123 Perugia, Italy 2. Univ Perugia, INSTM Unit, Mat Engn Ctr, I-05100 Terni, Italy 3. Univ Aquila, INFM, I-67100 Laquila, Italy 4. Univ Aquila, Dept Chem & Mat, I-67100 Laquila, Italy 5. Univ Aquila, INFM, I-67010 Coppito, Italy 6. Univ Aquila, Dept Phys, I-67010 Coppito, Italy (literal)
Titolo
  • Role of defects on the gas sensing properties of carbon nanotubes thin films: experiment and theory (literal)
Abstract
  • A gas sensor, fabricated by the simple casting of carbon nanotubes thin film on an interdigitated electrode, is presented for gas detection and its characteristics are analysed by means of experimental measurements and theoretical simulations. Our results show that topological defects may be responsible for the reported sensitivity of the electronic and transport properties to NO2. In particular, experimental findings show that when the nanotubes walls contain topological defects the sensor displays a high sensitivity to NO2 exposure with a poor recover of the base resistance value in absence of NO2 and the gas sensitivity measured on nanotubes may be strongly reduced by lowering the deposition temperature. Experimental results and theoretical calculations indicate that the adsorption and the uptake of the oxidizing gas are more likely to occur by the interaction between the NO2 molecule and defective sites into the hexagonal network of the nanotubes. (literal)
Prodotto di
Autore CNR

Incoming links:


Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Prodotto
Autore CNR di
data.CNR.it