ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection

Autores
Vega, Nadia Celeste; Wallar, R.; Caram, Jorge Pablo; Grinblat, Gustavo Sergio; Tirado, Monica Cecilia; LaPierre, R. R.; Comedi, David Mario
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Vertically aligned ZnO nanowires (NWs) were grown on Au-nanocluster-seeded amorphous SiO2 films by the advective transport and deposition of Zn vapours obtained from the carbothermal reaction of graphite and ZnO powders. Both the NW volume and visible-to-UV photoluminescence ratio were found to be strong functions of, and hence could be tailored by, the (ZnO+C) source SiO2 substrate distance. We observe C flakes on the ZnO NWs/SiO2 substrates which exhibit short NWs that developed on both sides. The SiO2 and C substrates/NW interfaces were studied in detail to determine growth mechanisms. NWs on Au-seeded SiO2 were promoted by a rough ZnO seed layer whose formation was catalysed by the Au clusters. In contrast, NWs grew without any seed on C. A correlation comprising three orders of magnitude between the visible-to-UV photoluminescence intensity ratio and the NW volume is found, which results from a characteristic Zn partial pressure profile that fixes both O deficiency defect concentration and growth rate.
Fil: Vega, Nadia Celeste. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Wallar, R.. Mc Master University; Canadá
Fil: Caram, Jorge Pablo. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Grinblat, Gustavo Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina
Fil: LaPierre, R. R.. Mc Master University; Canadá
Fil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina
Materia
ZNO NANOWIRE
CARBOTHERMAL REDUCTION
VAPOUR ADVECTION
SIO2 SUBSTRATE
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:11336/270681
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/270681
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advectionVega, Nadia CelesteWallar, R.Caram, Jorge PabloGrinblat, Gustavo SergioTirado, Monica CeciliaLaPierre, R. R.Comedi, David MarioZNO NANOWIRECARBOTHERMAL REDUCTIONVAPOUR ADVECTIONSIO2 SUBSTRATEhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Vertically aligned ZnO nanowires (NWs) were grown on Au-nanocluster-seeded amorphous SiO2 films by the advective transport and deposition of Zn vapours obtained from the carbothermal reaction of graphite and ZnO powders. Both the NW volume and visible-to-UV photoluminescence ratio were found to be strong functions of, and hence could be tailored by, the (ZnO+C) source SiO2 substrate distance. We observe C flakes on the ZnO NWs/SiO2 substrates which exhibit short NWs that developed on both sides. The SiO2 and C substrates/NW interfaces were studied in detail to determine growth mechanisms. NWs on Au-seeded SiO2 were promoted by a rough ZnO seed layer whose formation was catalysed by the Au clusters. In contrast, NWs grew without any seed on C. A correlation comprising three orders of magnitude between the visible-to-UV photoluminescence intensity ratio and the NW volume is found, which results from a characteristic Zn partial pressure profile that fixes both O deficiency defect concentration and growth rate.Fil: Vega, Nadia Celeste. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Wallar, R.. Mc Master University; CanadáFil: Caram, Jorge Pablo. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Grinblat, Gustavo Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; ArgentinaFil: LaPierre, R. R.. Mc Master University; CanadáFil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; ArgentinaIOP Publishing2012-07info: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/11336/270681Vega, Nadia Celeste; Wallar, R.; Caram, Jorge Pablo; Grinblat, Gustavo Sergio; Tirado, Monica Cecilia; et al.; ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection; IOP Publishing; Nanotechnology; 23; 27; 7-2012; 1-120957-4484CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0957-4484/23/27/275602info:eu-repo/semantics/altIdentifier/doi/10.1088/0957-4484/23/27/275602info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:53Zoai:ri.conicet.gov.ar:11336/270681instacron: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:34982025-09-29 09:36:54.252CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
title ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
spellingShingle ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
Vega, Nadia Celeste
ZNO NANOWIRE
CARBOTHERMAL REDUCTION
VAPOUR ADVECTION
SIO2 SUBSTRATE
title_short ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
title_full ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
title_fullStr ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
title_full_unstemmed ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
title_sort ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection
dc.creator.none.fl_str_mv Vega, Nadia Celeste
Wallar, R.
Caram, Jorge Pablo
Grinblat, Gustavo Sergio
Tirado, Monica Cecilia
LaPierre, R. R.
Comedi, David Mario
author Vega, Nadia Celeste
author_facet Vega, Nadia Celeste
Wallar, R.
Caram, Jorge Pablo
Grinblat, Gustavo Sergio
Tirado, Monica Cecilia
LaPierre, R. R.
Comedi, David Mario
author_role author
author2 Wallar, R.
Caram, Jorge Pablo
Grinblat, Gustavo Sergio
Tirado, Monica Cecilia
LaPierre, R. R.
Comedi, David Mario
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv ZNO NANOWIRE
CARBOTHERMAL REDUCTION
VAPOUR ADVECTION
SIO2 SUBSTRATE
topic ZNO NANOWIRE
CARBOTHERMAL REDUCTION
VAPOUR ADVECTION
SIO2 SUBSTRATE
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Vertically aligned ZnO nanowires (NWs) were grown on Au-nanocluster-seeded amorphous SiO2 films by the advective transport and deposition of Zn vapours obtained from the carbothermal reaction of graphite and ZnO powders. Both the NW volume and visible-to-UV photoluminescence ratio were found to be strong functions of, and hence could be tailored by, the (ZnO+C) source SiO2 substrate distance. We observe C flakes on the ZnO NWs/SiO2 substrates which exhibit short NWs that developed on both sides. The SiO2 and C substrates/NW interfaces were studied in detail to determine growth mechanisms. NWs on Au-seeded SiO2 were promoted by a rough ZnO seed layer whose formation was catalysed by the Au clusters. In contrast, NWs grew without any seed on C. A correlation comprising three orders of magnitude between the visible-to-UV photoluminescence intensity ratio and the NW volume is found, which results from a characteristic Zn partial pressure profile that fixes both O deficiency defect concentration and growth rate.
Fil: Vega, Nadia Celeste. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Wallar, R.. Mc Master University; Canadá
Fil: Caram, Jorge Pablo. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Grinblat, Gustavo Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina
Fil: LaPierre, R. R.. Mc Master University; Canadá
Fil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina
description Vertically aligned ZnO nanowires (NWs) were grown on Au-nanocluster-seeded amorphous SiO2 films by the advective transport and deposition of Zn vapours obtained from the carbothermal reaction of graphite and ZnO powders. Both the NW volume and visible-to-UV photoluminescence ratio were found to be strong functions of, and hence could be tailored by, the (ZnO+C) source SiO2 substrate distance. We observe C flakes on the ZnO NWs/SiO2 substrates which exhibit short NWs that developed on both sides. The SiO2 and C substrates/NW interfaces were studied in detail to determine growth mechanisms. NWs on Au-seeded SiO2 were promoted by a rough ZnO seed layer whose formation was catalysed by the Au clusters. In contrast, NWs grew without any seed on C. A correlation comprising three orders of magnitude between the visible-to-UV photoluminescence intensity ratio and the NW volume is found, which results from a characteristic Zn partial pressure profile that fixes both O deficiency defect concentration and growth rate.
publishDate 2012
dc.date.none.fl_str_mv 2012-07
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/11336/270681
Vega, Nadia Celeste; Wallar, R.; Caram, Jorge Pablo; Grinblat, Gustavo Sergio; Tirado, Monica Cecilia; et al.; ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection; IOP Publishing; Nanotechnology; 23; 27; 7-2012; 1-12
0957-4484
CONICET Digital
CONICET
url http://hdl.handle.net/11336/270681
identifier_str_mv Vega, Nadia Celeste; Wallar, R.; Caram, Jorge Pablo; Grinblat, Gustavo Sergio; Tirado, Monica Cecilia; et al.; ZnO nanowire co-growth on SiO 2 and C by carbothermal reduction and vapour advection; IOP Publishing; Nanotechnology; 23; 27; 7-2012; 1-12
0957-4484
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://iopscience.iop.org/article/10.1088/0957-4484/23/27/275602
info:eu-repo/semantics/altIdentifier/doi/10.1088/0957-4484/23/27/275602
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.070432

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