Screen-printed perovskite-type thick films as gas sensors for environmental monitoring

Martinelli, G.; Carotta, M.C.; Ferroni, Matteo; Sadaoka, Yoshihiko; Traversa, Enrico

doi:10.1016/s0925-4005(99)00054-4

Cited by 239 publications

(90 citation statements)

References 54 publications

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“…These exceptions include the commercially available ammonia gas sensors, Cr 2−x Ti x O 3 [6,7] and NO x sensors based on perovskite rare-earth metal oxides of the LnFeO 3 family, where Ln is La, Nd, Sm, Gd and Dy [8].…”

Section: Introductionmentioning

confidence: 99%

“…8 filter layer [11], the present contribution takes a closer look at the precursor material itself. As the sensor effect towards reducing gases includes a mechanism which is attributed to surface processes, i.e., a redox reaction taking place at the semiconductor surface, the sensitivity of a given material should be improved by enhancing the surface area-to-volume ratio.…”

Section: Introductionmentioning

confidence: 99%

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Selectivity enhancement of p-type semiconducting hydrocarbon sensors—The use of sol-precipitated nano-powders

Sahner

Schönauer

Matam

et al. 2008

Sensors and Actuators B: Chemical

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A method for preparing sol-precipitated Sr(Ti 0.8 Fe 0.2 )O 3−δ powders yielding particle sizes of about 70 nm is presented. Screen-printed films based on such nano-scaled powders are compared and contrasted to conventional micro-scaled thick films.By employing sol-precipitated powders, the hydrocarbon sensitivity of the sensor devices is improved. For unsaturated hydrocarbons, resistance changes similar to those of thin films prepared by pulsed laser deposition are observed, thus combining the fast sensor response of Sr(Ti 0.8 Fe 0.2 )O 3−δ thick films with the high response (R/R 0 ) values observed for thin films. The pronounced cross-interference of NO and CO can be eliminated by means of an additional zeolite layer deposited on top of the nano-scaled sensor film.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selectivity enhancement of p-type semiconducting hydrocarbon sensors—The use of sol-precipitated nano-powders

Sahner

Schönauer

Matam

et al. 2008

Sensors and Actuators B: Chemical

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“…Dodd first presented a report on a sensor array in 1982 [7]. After that, many research teams conducted studies on sensor arrays for the detection of gases in various fields such as environmental monitoring, food and beverage analysis, and disease diagnosis [8][9][10]. However, it is difficult to reduce the distance between the sensing layers of a sensor array because the metal oxides have different operating temperatures.…”

Section: Introductionmentioning

confidence: 99%

Batch-processed semiconductor gas sensor array for the selective detection of NOx in automotive exhaust gas

Jang

Kim

2016

Micro and Nano Syst Lett

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This paper reports on a semiconductor gas sensor array to detect nitrogen oxides (NO x ) in automotive exhaust gas. The proposed semiconductor gas sensor array consisted of one common electrode and three individual electrodes to minimize the size of the sensor array, and three sensing layers [TiO 2 + SnO 2 (15 wt%), SnO 2 , and Ga 2 O 3 ] were deposited using screen printing. In addition, sensing materials were sintered under the same conditions in order to take advantage of batch processing. The sensing properties of the proposed sensor array were verified by experimental measurements, and the selectivity improved by using pattern recognition.

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“…Efforts from researchers have been made on its extensive applications in a number of areas such as materials for catalysis 7 and solid state gas sensors. [7][8][9][10][11][12] SrFeO 3 materials can be used as thin film gas sensors 3,4,10,11 since the reversible uptake of oxygen at elevated temperatures ͑400Ͻ T Ͻ 600°C͒ can readily occur and this compositional change is accompanied by significant changes in electrical conductivity which can be monitored as the sensor transduction signal. However, the electrical and gas sensing properties of films of these material types are strongly dependent on the cation and oxygen stoichiometries 11 and film morphology.…”

Section: Introductionmentioning

confidence: 99%

Thermal stability of SrFeO3/Al2O3 thin films: Transmission electron microscopy study and conductometric sensing response

Wang

Tunney

et al. 2008

Journal of Applied Physics

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1063/1.2957073Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Thermal stability of SrFeO3/Al2O3 thin films: transmission electron microscopy study and conductometric sensing response Wang, Dashan; Tunney, Jim; Du, Xiaomei; Post, Michael; Gauvin, Raynald http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/droits L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=69375db3-8b17-42fe-957d-a990a0a2ef6d http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=69375db3-8b17-42fe-957d-a990a0a2ef6d The SrFeO 3 / Al 2 O 3 thin film system has been studied using transmission electron microscopy ͑TEM͒. The thin films of SrFeO 3 were grown by pulsed laser deposition onto single crystal and sintered polycrystalline Al 2 O 3 substrates at room temperature ͑RT͒ and 700°C and subjected to annealing for various periods of time at 700-1000°C. TEM characterization showed that the morphology of the film varied with changes of deposition temperature. Films deposited at RT featured a columnar structure and those deposited at 700°C showed layers with crystalline grains. The interfacial structures of the films remained unchanged below 700°C. Interfacial reactions were observed following annealing at 850°C for 5 h. The phase transformation at the interface was characterized for the film annealed at 1000°C for 5 h, for which the principal phases were identified as SrAl 2−x Fe x O 4 and SrFe 12−y Al y O 19 . Evaluation for thin film conductometric sensing applications indicated that the untreated films deposited at 700°C onto both single crystal and sintered Al 2 O 3 substrates exhibited a p-type gas sensor response to oxygen at 500°C.

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Screen-printed perovskite-type thick films as gas sensors for environmental monitoring

Cited by 239 publications

References 54 publications

Selectivity enhancement of p-type semiconducting hydrocarbon sensors—The use of sol-precipitated nano-powders

Selectivity enhancement of p-type semiconducting hydrocarbon sensors—The use of sol-precipitated nano-powders

Batch-processed semiconductor gas sensor array for the selective detection of NOx in automotive exhaust gas

Thermal stability of SrFeO3/Al2O3 thin films: Transmission electron microscopy study and conductometric sensing response

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