Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence

Autores
Borrero Gonzalez, Luis Jose; Nunes, L. A. O.; Guimaraes, F. E. G.; Wojcik, J.; Mascher, P.; Gennaro, Ana Maria; Tirado, Monica Cecilia; Comedi, David Mario
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We combine X-ray absorption, electron spin resonance and Raman spectroscopies, X-ray diffraction and photoluminescence (PL) techniques to determine the structure and luminescence mechanisms in Si nanoclusters (Si-ncls) embedded within Si oxides at various intermediate formation stages. The Si-ncls/oxide systems are fabricated by thermally annealing plasma-enhanced chemical vapor deposited Si-rich Si-oxide films. The structural and chemical orders in the amorphous oxide matrix, the Si-ncls amorphous and crystalline volume fractions and sizes, the dangling bond density and PL spectra and decay rates are followed closely as a function of the annealing temperature. The results can be interpreted by a crystalline core/amorphous shell model for the Sincls. The important role of the shell, often ignored in the literature, is discussed. As the Si-ncls crystalline cores grow at the expense of thinning amorphous shells, the PL undergoes a transition from a regime dominated by disorder-induced effects to a situation where quantum confinement prevails.
Fil: Borrero Gonzalez, Luis Jose. Universidade de São Paulo; Brasil
Fil: Nunes, L. A. O.. Universidade de São Paulo; Brasil
Fil: Guimaraes, F. E. G.. Universidade de São Paulo; Brasil
Fil: Wojcik, J.. McMaster University; Canadá
Fil: Mascher, P.. McMaster University; Canadá
Fil: Gennaro, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán; Argentina
Fil: Comedi, David Mario. Universidad Nacional de Tucumán; Argentina
Materia
Si-Rich Si Oxides
X-Ray Diffraction
Electron Spin Resonance Spectroscopy
Raman Spectroscopy
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:11336/18807
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/18807
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of PhotoluminescenceBorrero Gonzalez, Luis JoseNunes, L. A. O.Guimaraes, F. E. G.Wojcik, J.Mascher, P.Gennaro, Ana MariaTirado, Monica CeciliaComedi, David MarioSi-Rich Si OxidesX-Ray DiffractionElectron Spin Resonance SpectroscopyRaman Spectroscopyhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We combine X-ray absorption, electron spin resonance and Raman spectroscopies, X-ray diffraction and photoluminescence (PL) techniques to determine the structure and luminescence mechanisms in Si nanoclusters (Si-ncls) embedded within Si oxides at various intermediate formation stages. The Si-ncls/oxide systems are fabricated by thermally annealing plasma-enhanced chemical vapor deposited Si-rich Si-oxide films. The structural and chemical orders in the amorphous oxide matrix, the Si-ncls amorphous and crystalline volume fractions and sizes, the dangling bond density and PL spectra and decay rates are followed closely as a function of the annealing temperature. The results can be interpreted by a crystalline core/amorphous shell model for the Sincls. The important role of the shell, often ignored in the literature, is discussed. As the Si-ncls crystalline cores grow at the expense of thinning amorphous shells, the PL undergoes a transition from a regime dominated by disorder-induced effects to a situation where quantum confinement prevails.Fil: Borrero Gonzalez, Luis Jose. Universidade de São Paulo; BrasilFil: Nunes, L. A. O.. Universidade de São Paulo; BrasilFil: Guimaraes, F. E. G.. Universidade de São Paulo; BrasilFil: Wojcik, J.. McMaster University; CanadáFil: Mascher, P.. McMaster University; CanadáFil: Gennaro, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán; ArgentinaFil: Comedi, David Mario. Universidad Nacional de Tucumán; ArgentinaThe Electrochemical Society2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18807Borrero Gonzalez, Luis Jose; Nunes, L. A. O.; Guimaraes, F. E. G.; Wojcik, J.; Mascher, P.; et al.; Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence; The Electrochemical Society; ECS Transactions; 45; 5; 6-2012; 11-191938-6737CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1149/1.3700405info:eu-repo/semantics/altIdentifier/url/http://ecst.ecsdl.org/content/45/5/11info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:06:29Zoai:ri.conicet.gov.ar:11336/18807instacron: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:34982025-10-22 11:06:29.689CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
title Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
spellingShingle Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
Borrero Gonzalez, Luis Jose
Si-Rich Si Oxides
X-Ray Diffraction
Electron Spin Resonance Spectroscopy
Raman Spectroscopy
title_short Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
title_full Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
title_fullStr Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
title_full_unstemmed Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
title_sort Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence
dc.creator.none.fl_str_mv Borrero Gonzalez, Luis Jose
Nunes, L. A. O.
Guimaraes, F. E. G.
Wojcik, J.
Mascher, P.
Gennaro, Ana Maria
Tirado, Monica Cecilia
Comedi, David Mario
author Borrero Gonzalez, Luis Jose
author_facet Borrero Gonzalez, Luis Jose
Nunes, L. A. O.
Guimaraes, F. E. G.
Wojcik, J.
Mascher, P.
Gennaro, Ana Maria
Tirado, Monica Cecilia
Comedi, David Mario
author_role author
author2 Nunes, L. A. O.
Guimaraes, F. E. G.
Wojcik, J.
Mascher, P.
Gennaro, Ana Maria
Tirado, Monica Cecilia
Comedi, David Mario
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Si-Rich Si Oxides
X-Ray Diffraction
Electron Spin Resonance Spectroscopy
Raman Spectroscopy
topic Si-Rich Si Oxides
X-Ray Diffraction
Electron Spin Resonance Spectroscopy
Raman Spectroscopy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We combine X-ray absorption, electron spin resonance and Raman spectroscopies, X-ray diffraction and photoluminescence (PL) techniques to determine the structure and luminescence mechanisms in Si nanoclusters (Si-ncls) embedded within Si oxides at various intermediate formation stages. The Si-ncls/oxide systems are fabricated by thermally annealing plasma-enhanced chemical vapor deposited Si-rich Si-oxide films. The structural and chemical orders in the amorphous oxide matrix, the Si-ncls amorphous and crystalline volume fractions and sizes, the dangling bond density and PL spectra and decay rates are followed closely as a function of the annealing temperature. The results can be interpreted by a crystalline core/amorphous shell model for the Sincls. The important role of the shell, often ignored in the literature, is discussed. As the Si-ncls crystalline cores grow at the expense of thinning amorphous shells, the PL undergoes a transition from a regime dominated by disorder-induced effects to a situation where quantum confinement prevails.
Fil: Borrero Gonzalez, Luis Jose. Universidade de São Paulo; Brasil
Fil: Nunes, L. A. O.. Universidade de São Paulo; Brasil
Fil: Guimaraes, F. E. G.. Universidade de São Paulo; Brasil
Fil: Wojcik, J.. McMaster University; Canadá
Fil: Mascher, P.. McMaster University; Canadá
Fil: Gennaro, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Tirado, Monica Cecilia. Universidad Nacional de Tucumán; Argentina
Fil: Comedi, David Mario. Universidad Nacional de Tucumán; Argentina
description We combine X-ray absorption, electron spin resonance and Raman spectroscopies, X-ray diffraction and photoluminescence (PL) techniques to determine the structure and luminescence mechanisms in Si nanoclusters (Si-ncls) embedded within Si oxides at various intermediate formation stages. The Si-ncls/oxide systems are fabricated by thermally annealing plasma-enhanced chemical vapor deposited Si-rich Si-oxide films. The structural and chemical orders in the amorphous oxide matrix, the Si-ncls amorphous and crystalline volume fractions and sizes, the dangling bond density and PL spectra and decay rates are followed closely as a function of the annealing temperature. The results can be interpreted by a crystalline core/amorphous shell model for the Sincls. The important role of the shell, often ignored in the literature, is discussed. As the Si-ncls crystalline cores grow at the expense of thinning amorphous shells, the PL undergoes a transition from a regime dominated by disorder-induced effects to a situation where quantum confinement prevails.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/18807
Borrero Gonzalez, Luis Jose; Nunes, L. A. O.; Guimaraes, F. E. G.; Wojcik, J.; Mascher, P.; et al.; Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence; The Electrochemical Society; ECS Transactions; 45; 5; 6-2012; 11-19
1938-6737
CONICET Digital
CONICET
url http://hdl.handle.net/11336/18807
identifier_str_mv Borrero Gonzalez, Luis Jose; Nunes, L. A. O.; Guimaraes, F. E. G.; Wojcik, J.; Mascher, P.; et al.; Growing Si Nanocrystals within a-Si Nanoclusters Embedded in a-SiO2: Evolution of Photoluminescence; The Electrochemical Society; ECS Transactions; 45; 5; 6-2012; 11-19
1938-6737
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1149/1.3700405
info:eu-repo/semantics/altIdentifier/url/http://ecst.ecsdl.org/content/45/5/11
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
dc.publisher.none.fl_str_mv The Electrochemical Society
publisher.none.fl_str_mv The Electrochemical Society
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_ 1846781363810729984
score 12.982451

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