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Membrane selectivity versus sensor response in hydrogenated amorphous silicon CHEMFETs using a semi-empirical model

2011-10Journal article Open access
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dc.contributor.authorCosta, João
dc.contributor.authorFernandes, Miguel
dc.contributor.authorVieira, Manuela
dc.contributor.authorLavareda, G.
dc.contributor.authorKarmali, Amin
dc.date.accessioned2013-02-15T17:30:50Z
dc.date.available2013-02-15T17:30:50Z
dc.date.issued2011-10
dc.description.abstractToxic amides, such as acrylamide, are potentially harmful to Human health, so there is great interest in the fabrication of compact and economical devices to measure their concentration in food products and effluents. The CHEmically Modified Field Effect Transistor (CHEMFET) based onamorphous silicon technology is a candidate for this type of application due to its low fabrication cost. In this article we have used a semi-empirical modelof the device to predict its performance in a solution of interfering ions. The actual semiconductor unit of the sensor was fabricated by the PECVD technique in the top gate configuration. The CHEMFET simulation was performed based on the experimental current voltage curves of the semiconductor unit and on an empirical model of the polymeric membrane. Results presented here are useful for selection and design of CHEMFET membranes and provide an idea of the limitations of the amorphous CHEMFET device. In addition to the economical advantage, the small size of this prototype means it is appropriate for in situ operation and integration in a sensor array.por
dc.identifier.citationCOSTA, J.; FERNANDES, M.; VIEIRA, M.; LAVAREDA, G.; KARMALI, A. - Membrane Selectivity versus Sensor Response in Hydrogenated Amorphous Silicon CHEMFETs Using a Semi-Empirical Model.Journal of Nanoscience and Nanotechnology. ISSN 1533-4880. Vol. 11, n. º10 (2011) p. 8844-8847.por
dc.identifier.issn1533-4880
dc.identifier.urihttp://hdl.handle.net/10400.21/2214
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAmer Scientific Publisherspor
dc.subjectAmorphouspor
dc.subjectSiliconpor
dc.subjectMembranepor
dc.subjectSelectivitypor
dc.subjectAmmoniumpor
dc.subjectField-effect transistorspor
dc.subjectISFETpor
dc.titleMembrane selectivity versus sensor response in hydrogenated amorphous silicon CHEMFETs using a semi-empirical modelpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceValenciapor
oaire.citation.endPage8847por
oaire.citation.issue10por
oaire.citation.startPage8844por
oaire.citation.titleJournal of Nanoscience and Nanotechnologypor
oaire.citation.volume11por
person.familyNameFernandes
person.familyNameVieira
person.familyNameKarmali
person.givenNameMiguel
person.givenNameManuela
person.givenNameAmin
person.identifier10792
person.identifier.ciencia-idDD1B-859F-EB0B
person.identifier.ciencia-id9516-E25E-BB8E
person.identifier.orcid0000-0002-0765-474X
person.identifier.orcid0000-0002-1150-9895
person.identifier.orcid0000-0003-0419-401X
person.identifier.ridV-7860-2017
person.identifier.ridE-4787-2011
person.identifier.scopus-author-id24450183800
person.identifier.scopus-author-id7202140173
person.identifier.scopus-author-id6603778216
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication6a72ab08-83fa-4225-be0e-b827f206a82e
relation.isAuthorOfPublicationb77c6785-9cfb-4cd4-90b5-c2b816bd7d11
relation.isAuthorOfPublication23975b4b-3234-4139-9675-89ea6f9a2332
relation.isAuthorOfPublication.latestForDiscovery6a72ab08-83fa-4225-be0e-b827f206a82e

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