Grain size effect on the electrical response of SnO2 thin and thick film gas sensors

Autores
Savu, Raluca; Ponce, Miguel Adolfo; Joanni, Ednan; Bueno, Paulo Roberto; Castro, Miriam Susana; Cilense, Mario; Varela, Jose Arana; Longo, Elson
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were performed in order to determine the influence of the microstructure and working conditions over the electrical response of the sensors. The conductivity of all samples increases with the temperature and decreases in oxygen, as expected for an n-type semiconducting material. The impedance plots indicated the existence of two time constants related to the grains and the grain boundaries. The Nyquist diagrams at low frequencies revealed the changes that took place in the grain boundary region, with the contribution of the grains being indicated by the formation of a second semicircle at high frequencies. The better sensing performance of the doctor bladed samples can be explained by their lower initial resistance values, bigger grain sizes and higher porosity.
Fil: Savu, Raluca. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Joanni, Ednan. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Bueno, Paulo Roberto. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Cilense, Mario. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Varela, Jose Arana. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Materia
semiconductors
impedance spectroscopy
electrical properties
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/35024
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Grain size effect on the electrical response of SnO2 thin and thick film gas sensorsSavu, RalucaPonce, Miguel AdolfoJoanni, EdnanBueno, Paulo RobertoCastro, Miriam SusanaCilense, MarioVarela, Jose AranaLongo, Elsonsemiconductorsimpedance spectroscopyelectrical propertieshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were performed in order to determine the influence of the microstructure and working conditions over the electrical response of the sensors. The conductivity of all samples increases with the temperature and decreases in oxygen, as expected for an n-type semiconducting material. The impedance plots indicated the existence of two time constants related to the grains and the grain boundaries. The Nyquist diagrams at low frequencies revealed the changes that took place in the grain boundary region, with the contribution of the grains being indicated by the formation of a second semicircle at high frequencies. The better sensing performance of the doctor bladed samples can be explained by their lower initial resistance values, bigger grain sizes and higher porosity.Fil: Savu, Raluca. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Joanni, Ednan. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Bueno, Paulo Roberto. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Cilense, Mario. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Varela, Jose Arana. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilUniversidade Federal de São Carlos2009-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/35024Savu, Raluca; Ponce, Miguel Adolfo; Joanni, Ednan; Bueno, Paulo Roberto; Castro, Miriam Susana; et al.; Grain size effect on the electrical response of SnO2 thin and thick film gas sensors; Universidade Federal de São Carlos; Materials Research; 12; 1; 3-2009; 83-871516-1439CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/3n8sn2info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:10:42Zoai:ri.conicet.gov.ar:11336/35024instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:10:42.849CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
title Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
spellingShingle Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
Savu, Raluca
semiconductors
impedance spectroscopy
electrical properties
title_short Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
title_full Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
title_fullStr Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
title_full_unstemmed Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
title_sort Grain size effect on the electrical response of SnO2 thin and thick film gas sensors
dc.creator.none.fl_str_mv Savu, Raluca
Ponce, Miguel Adolfo
Joanni, Ednan
Bueno, Paulo Roberto
Castro, Miriam Susana
Cilense, Mario
Varela, Jose Arana
Longo, Elson
author Savu, Raluca
author_facet Savu, Raluca
Ponce, Miguel Adolfo
Joanni, Ednan
Bueno, Paulo Roberto
Castro, Miriam Susana
Cilense, Mario
Varela, Jose Arana
Longo, Elson
author_role author
author2 Ponce, Miguel Adolfo
Joanni, Ednan
Bueno, Paulo Roberto
Castro, Miriam Susana
Cilense, Mario
Varela, Jose Arana
Longo, Elson
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv semiconductors
impedance spectroscopy
electrical properties
topic semiconductors
impedance spectroscopy
electrical properties
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were performed in order to determine the influence of the microstructure and working conditions over the electrical response of the sensors. The conductivity of all samples increases with the temperature and decreases in oxygen, as expected for an n-type semiconducting material. The impedance plots indicated the existence of two time constants related to the grains and the grain boundaries. The Nyquist diagrams at low frequencies revealed the changes that took place in the grain boundary region, with the contribution of the grains being indicated by the formation of a second semicircle at high frequencies. The better sensing performance of the doctor bladed samples can be explained by their lower initial resistance values, bigger grain sizes and higher porosity.
Fil: Savu, Raluca. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Joanni, Ednan. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Bueno, Paulo Roberto. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Cilense, Mario. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Varela, Jose Arana. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
description Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were performed in order to determine the influence of the microstructure and working conditions over the electrical response of the sensors. The conductivity of all samples increases with the temperature and decreases in oxygen, as expected for an n-type semiconducting material. The impedance plots indicated the existence of two time constants related to the grains and the grain boundaries. The Nyquist diagrams at low frequencies revealed the changes that took place in the grain boundary region, with the contribution of the grains being indicated by the formation of a second semicircle at high frequencies. The better sensing performance of the doctor bladed samples can be explained by their lower initial resistance values, bigger grain sizes and higher porosity.
publishDate 2009
dc.date.none.fl_str_mv 2009-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/35024
Savu, Raluca; Ponce, Miguel Adolfo; Joanni, Ednan; Bueno, Paulo Roberto; Castro, Miriam Susana; et al.; Grain size effect on the electrical response of SnO2 thin and thick film gas sensors; Universidade Federal de São Carlos; Materials Research; 12; 1; 3-2009; 83-87
1516-1439
CONICET Digital
CONICET
url http://hdl.handle.net/11336/35024
identifier_str_mv Savu, Raluca; Ponce, Miguel Adolfo; Joanni, Ednan; Bueno, Paulo Roberto; Castro, Miriam Susana; et al.; Grain size effect on the electrical response of SnO2 thin and thick film gas sensors; Universidade Federal de São Carlos; Materials Research; 12; 1; 3-2009; 83-87
1516-1439
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/3n8sn2
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de São Carlos
publisher.none.fl_str_mv Universidade Federal de São Carlos
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842980541355261952
score 13.004268

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