Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires

Autores
Vega, Nadia Celeste; Tirado, Monica Cecilia; Comedi, David Mario; Rodriguez, Andres; Rodriguez, Tomás; Hughes, Gareth M.; Grovenor, Chris R. M.; Audebert, Fernando Enrique
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
ZnO nanofibre networks (NFNs) were grown by vapour transport method on Si-based substrates. One type of substrate was SiO2 thermally grown on Si and another consisted of a Si wafer onto which Si nanowires (NWs) had been grown having Au nanoparticles catalysts. The ZnO-NFN morphology was observed by scanning electron microscopy on samples grown at 600 °C and 720 °C substrate temperature, while an focused ion beam was used to study the ZnO NFN/Si NWs/Si and ZnO NFN/SiO2 interfaces. Photoluminescence, electrical conductance and photoconductance of ZnO-NFN was studied for the sample grown on SiO2. The photoluminescence spectra show strong peaks due to exciton recombination and lattice defects. The ZnO-NFN presents quasi-persistent photoconductivity effects and ohmic I-V characteristics which become nonlinear and hysteretic as the applied voltage is increased. The electrical conductance as a function of temperature can be described by a modified three dimensional variable hopping model with nanometer-ranged typical hopping distances.
Fil: Vega, Nadia Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Física del Sólido; Argentina
Fil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Departamento de Nanomateriales y Propiedades Dieléctricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Física del Sólido; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Departamento de Nanomateriales y Propiedades Dieléctricas; Argentina
Fil: Rodriguez, Andres. Universidad Politécnica de Madrid; España
Fil: Rodriguez, Tomás. Universidad Politécnica de Madrid; España
Fil: Hughes, Gareth M.. University of Oxford; Reino Unido
Fil: Grovenor, Chris R. M.. University of Oxford; Reino Unido
Fil: Audebert, Fernando Enrique. University Of Oxford; Reino Unido. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Mecánica. Grupo de Materiales Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Nanostructures
Semiconductors
ZnO
Photoluminescence
Photoconductivity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/14938
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/14938
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowiresVega, Nadia CelesteTirado, Monica CeciliaComedi, David MarioRodriguez, AndresRodriguez, TomásHughes, Gareth M.Grovenor, Chris R. M.Audebert, Fernando EnriqueNanostructuresSemiconductorsZnOPhotoluminescencePhotoconductivityhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2ZnO nanofibre networks (NFNs) were grown by vapour transport method on Si-based substrates. One type of substrate was SiO2 thermally grown on Si and another consisted of a Si wafer onto which Si nanowires (NWs) had been grown having Au nanoparticles catalysts. The ZnO-NFN morphology was observed by scanning electron microscopy on samples grown at 600 °C and 720 °C substrate temperature, while an focused ion beam was used to study the ZnO NFN/Si NWs/Si and ZnO NFN/SiO2 interfaces. Photoluminescence, electrical conductance and photoconductance of ZnO-NFN was studied for the sample grown on SiO2. The photoluminescence spectra show strong peaks due to exciton recombination and lattice defects. The ZnO-NFN presents quasi-persistent photoconductivity effects and ohmic I-V characteristics which become nonlinear and hysteretic as the applied voltage is increased. The electrical conductance as a function of temperature can be described by a modified three dimensional variable hopping model with nanometer-ranged typical hopping distances.Fil: Vega, Nadia Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Física del Sólido; ArgentinaFil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Departamento de Nanomateriales y Propiedades Dieléctricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Física del Sólido; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Departamento de Nanomateriales y Propiedades Dieléctricas; ArgentinaFil: Rodriguez, Andres. Universidad Politécnica de Madrid; EspañaFil: Rodriguez, Tomás. Universidad Politécnica de Madrid; EspañaFil: Hughes, Gareth M.. University of Oxford; Reino UnidoFil: Grovenor, Chris R. M.. University of Oxford; Reino UnidoFil: Audebert, Fernando Enrique. University Of Oxford; Reino Unido. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Mecánica. Grupo de Materiales Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaUniversidad Federal de Sao Carlos2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14938Vega, Nadia Celeste; Tirado, Monica Cecilia; Comedi, David Mario; Rodriguez, Andres; Rodriguez, Tomás; et al.; Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires; Universidad Federal de Sao Carlos; Materials Research; 16; 3; 5-2013; 597-6021516-14391980-5373enginfo:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/mrkb42info:eu-repo/semantics/altIdentifier/doi/10.1590/S1516-14392013005000030info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:20:15Zoai:ri.conicet.gov.ar:11336/14938instacron: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 13:20:15.362CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
title Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
spellingShingle Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
Vega, Nadia Celeste
Nanostructures
Semiconductors
ZnO
Photoluminescence
Photoconductivity
title_short Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
title_full Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
title_fullStr Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
title_full_unstemmed Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
title_sort Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires
dc.creator.none.fl_str_mv Vega, Nadia Celeste
Tirado, Monica Cecilia
Comedi, David Mario
Rodriguez, Andres
Rodriguez, Tomás
Hughes, Gareth M.
Grovenor, Chris R. M.
Audebert, Fernando Enrique
author Vega, Nadia Celeste
author_facet Vega, Nadia Celeste
Tirado, Monica Cecilia
Comedi, David Mario
Rodriguez, Andres
Rodriguez, Tomás
Hughes, Gareth M.
Grovenor, Chris R. M.
Audebert, Fernando Enrique
author_role author
author2 Tirado, Monica Cecilia
Comedi, David Mario
Rodriguez, Andres
Rodriguez, Tomás
Hughes, Gareth M.
Grovenor, Chris R. M.
Audebert, Fernando Enrique
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Nanostructures
Semiconductors
ZnO
Photoluminescence
Photoconductivity
topic Nanostructures
Semiconductors
ZnO
Photoluminescence
Photoconductivity
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv ZnO nanofibre networks (NFNs) were grown by vapour transport method on Si-based substrates. One type of substrate was SiO2 thermally grown on Si and another consisted of a Si wafer onto which Si nanowires (NWs) had been grown having Au nanoparticles catalysts. The ZnO-NFN morphology was observed by scanning electron microscopy on samples grown at 600 °C and 720 °C substrate temperature, while an focused ion beam was used to study the ZnO NFN/Si NWs/Si and ZnO NFN/SiO2 interfaces. Photoluminescence, electrical conductance and photoconductance of ZnO-NFN was studied for the sample grown on SiO2. The photoluminescence spectra show strong peaks due to exciton recombination and lattice defects. The ZnO-NFN presents quasi-persistent photoconductivity effects and ohmic I-V characteristics which become nonlinear and hysteretic as the applied voltage is increased. The electrical conductance as a function of temperature can be described by a modified three dimensional variable hopping model with nanometer-ranged typical hopping distances.
Fil: Vega, Nadia Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Física del Sólido; Argentina
Fil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Departamento de Nanomateriales y Propiedades Dieléctricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Laboratorio de Física del Sólido; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física. Departamento de Nanomateriales y Propiedades Dieléctricas; Argentina
Fil: Rodriguez, Andres. Universidad Politécnica de Madrid; España
Fil: Rodriguez, Tomás. Universidad Politécnica de Madrid; España
Fil: Hughes, Gareth M.. University of Oxford; Reino Unido
Fil: Grovenor, Chris R. M.. University of Oxford; Reino Unido
Fil: Audebert, Fernando Enrique. University Of Oxford; Reino Unido. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Mecánica. Grupo de Materiales Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description ZnO nanofibre networks (NFNs) were grown by vapour transport method on Si-based substrates. One type of substrate was SiO2 thermally grown on Si and another consisted of a Si wafer onto which Si nanowires (NWs) had been grown having Au nanoparticles catalysts. The ZnO-NFN morphology was observed by scanning electron microscopy on samples grown at 600 °C and 720 °C substrate temperature, while an focused ion beam was used to study the ZnO NFN/Si NWs/Si and ZnO NFN/SiO2 interfaces. Photoluminescence, electrical conductance and photoconductance of ZnO-NFN was studied for the sample grown on SiO2. The photoluminescence spectra show strong peaks due to exciton recombination and lattice defects. The ZnO-NFN presents quasi-persistent photoconductivity effects and ohmic I-V characteristics which become nonlinear and hysteretic as the applied voltage is increased. The electrical conductance as a function of temperature can be described by a modified three dimensional variable hopping model with nanometer-ranged typical hopping distances.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
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/11336/14938
Vega, Nadia Celeste; Tirado, Monica Cecilia; Comedi, David Mario; Rodriguez, Andres; Rodriguez, Tomás; et al.; Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires; Universidad Federal de Sao Carlos; Materials Research; 16; 3; 5-2013; 597-602
1516-1439
1980-5373
url http://hdl.handle.net/11336/14938
identifier_str_mv Vega, Nadia Celeste; Tirado, Monica Cecilia; Comedi, David Mario; Rodriguez, Andres; Rodriguez, Tomás; et al.; Electrical, photoelectrical and morphological properties of ZnO nanofiber networks grown on SiO2 and on Si nanowires; Universidad Federal de Sao Carlos; Materials Research; 16; 3; 5-2013; 597-602
1516-1439
1980-5373
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/mrkb42
info:eu-repo/semantics/altIdentifier/doi/10.1590/S1516-14392013005000030
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidad Federal de Sao Carlos
publisher.none.fl_str_mv Universidad Federal de Sao 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
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score 12.48226

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