Optical sensing of NO2 in tin oxide nanowires at sub-ppm level (Articolo in rivista)

Type
Label
  • Optical sensing of NO2 in tin oxide nanowires at sub-ppm level (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.snb.2007.09.015 (literal)
Alternative label
  • Setaro, A; Bismuto, A; Lettieri, S; Maddalena, P; Comini, E; Bianchi, S; Baratto, C; Sberveglieri, G (2008)
    Optical sensing of NO2 in tin oxide nanowires at sub-ppm level
    in Sensors and actuators. B, Chemical (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Setaro, A; Bismuto, A; Lettieri, S; Maddalena, P; Comini, E; Bianchi, S; Baratto, C; Sberveglieri, G (literal)
Pagina inizio
  • 391 (literal)
Pagina fine
  • 395 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 130 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Setaro, A.; Bismuto, A.; Lettieri, S.; Maddalena, P.] Univ Naples Federico 2, CNR, INFM Coherentia, I-80126 Naples, Italy; [Setaro, A.; Bismuto, A.; Lettieri, S.; Maddalena, P.] Univ Naples Federico 2, Dipartimento Sci Fis, I-80126 Naples, Italy; [Comini, E.; Bianchi, S.; Baratto, C.; Sberveglieri, G.] Univ Brescia, CNR, INFM, SENSOR, I-25133 Brescia, Italy (literal)
Titolo
  • Optical sensing of NO2 in tin oxide nanowires at sub-ppm level (literal)
Abstract
  • Tin oxide nanostructures are currently considered as promising materials for gas sensing. Some of their physical properties, such as visible light photoluminescence, are still not fully understood and require further investigations. In this work we report on the quenching of tin oxide nanowires photoluminescence induced by nitrogen dioxide adsorption at the ppm and sub-ppm level. The recombination dynamics was investigated by means of time-resolved photoluminescence, finding non-exponential decay profiles. Neither the photoluminescence spectral shape nor the decay rates are found to depend significantly on the nitrogen dioxide concentration, suggesting that the gas-nanostructure interaction resides in a net reduction of the density of states which are responsible for the radiative transitions. (C) 2007 Elsevier B.V All rights reserved. (literal)
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