Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Fluctuation enhanced gas sensing with WO3-based nanoparticle gas sensors modulated by UV light at selected wavelengths

  • Identification data

    Identifier: PC:1543
    Authors:
    Radu IonescuMaciej TrawkaJanusz SmulkoaLech HasseClaes-Göran GranqvistFatima Ezahra Annanouch
    Abstract:
    DOI: 10.1016/j.snb.2016.05.032 URL: http://www.sciencedirect.com/science/article/pii/S0925400516307080
  • Others:

    Author, as appears in the article.: Radu Ionescu; Maciej Trawka; Janusz Smulkoa; Lech Hasse; Claes-Göran Granqvist; Fatima Ezahra Annanouch
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: IONESCU, SEPTIMIU RADU; Maciej Trawka; Janusz Smulkoa; Lech Hasse; Claes-Göran Granqvist; Fatima Ezahra Annanouch
    Keywords: sensitivity Noise spectroscopy Gas sensors
    Abstract: The sensitivity and selectivity of WO3-based gas sensors can be enhanced by UV-irradiation-induced modulation, especially if different wavelengths are employed. We used fluctuation-enhanced gas sensing, based on measurements of resistance fluctuations in the gas sensor, to study the effects of such modulation on the noise intensity for ambient atmospheres of synthetic air without and with additions of small amounts of ethanol, methane and formaldehyde. Our data confirmed that the method is energy efficient and can be applied to improve gas detection sensitivity and selectivity. The results are strongly dependent on the gaseous species, and a single UV-modulated WO3-based gas sensor discriminate between different gases.
    Research group: Microsystems and Nanotechnologies for Chemical Analysis
    Thematic Areas: Electronic engineering Ingeniería electrónica Enginyeria electrònica
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0925-4005
    Author identifier: 0000-0001-6211-0035; n/a; n/a; n/a; n/a; n/a
    Record's date: 2016-05-30
    Last page: 461
    Journal volume: 234
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0925400516307080?via%3Dihub
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1016/j.snb.2016.05.032
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    First page: 453
    Publication Type: Article Artículo Article
  • Keywords:

    Gas, Detectors de
    sensitivity
    Noise spectroscopy
    Gas sensors
    Electronic engineering
    Ingeniería electrónica
    Enginyeria electrònica
    0925-4005
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