Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles

Autores
Llansola Portolés, Manuel José; Pis Diez, Reinaldo; Dell'Arciprete, María Laura; Caregnato, Paula; Romero, Juan José; Mártire, Daniel Osvaldo; Azzaroni, Omar; Ceolín, Marcelo Raúl; González, Mónica Cristina
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Silicon nanoparticles of 1–5 nm size (SiNPs) were synthesized by a bottom-up (BU) approach involving a chemical wet method. The contribution of different emitters to the overall excitation–emission matrix was analyzed on the assumption that pure substances existing in a unique form show an excitation wavelength-invariant emission spectrum. The occurrence of emitters differing in size and aggregation was supported by transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), time-resolved single photon counting, and time-resolved anisotropy experiments. The effect on photoluminescence (PL) of the particle surface oxidation as a result of aging is studied and compared to that of surface oxidized particles obtained by a top-down (TD) approach following an electrochemical method with HF etching. Surface oxidation to SiOx seems to introduce two different effects on the SiNP PL. An emission originated in surface states associated to SiOx was identified and observed for SiNPs synthesized by both BU and TD approaches. Blue-shifted excitation–emission spectra associated to a silicon core in embedded SiOx nanostructures were also identified. Theoretical studies were carried out to help understand the observed results.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Aromatic compounds
Nanoparticles
Semiconducting nanostructured materials
Silicon
Suspensions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/170195
Acceder
id SEDICI_c9cb71300de02b2194fcb1396f6046d1
oai_identifier_str oai:sedici.unlp.edu.ar:10915/170195
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Understanding the Parameters Affecting the Photoluminescence of Silicon NanoparticlesLlansola Portolés, Manuel JoséPis Diez, ReinaldoDell'Arciprete, María LauraCaregnato, PaulaRomero, Juan JoséMártire, Daniel OsvaldoAzzaroni, OmarCeolín, Marcelo RaúlGonzález, Mónica CristinaQuímicaAromatic compoundsNanoparticlesSemiconducting nanostructured materialsSiliconSuspensionsSilicon nanoparticles of 1–5 nm size (SiNPs) were synthesized by a bottom-up (BU) approach involving a chemical wet method. The contribution of different emitters to the overall excitation–emission matrix was analyzed on the assumption that pure substances existing in a unique form show an excitation wavelength-invariant emission spectrum. The occurrence of emitters differing in size and aggregation was supported by transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), time-resolved single photon counting, and time-resolved anisotropy experiments. The effect on photoluminescence (PL) of the particle surface oxidation as a result of aging is studied and compared to that of surface oxidized particles obtained by a top-down (TD) approach following an electrochemical method with HF etching. Surface oxidation to SiOx seems to introduce two different effects on the SiNP PL. An emission originated in surface states associated to SiOx was identified and observed for SiNPs synthesized by both BU and TD approaches. Blue-shifted excitation–emission spectra associated to a silicon core in embedded SiOx nanostructures were also identified. Theoretical studies were carried out to help understand the observed results.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf11315-11325http://sedici.unlp.edu.ar/handle/10915/170195enginfo:eu-repo/semantics/altIdentifier/issn/1932-7455info:eu-repo/semantics/altIdentifier/doi/10.1021/jp2117938info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:26:31Zoai:sedici.unlp.edu.ar:10915/170195Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:26:31.54SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
title Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
spellingShingle Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
Llansola Portolés, Manuel José
Química
Aromatic compounds
Nanoparticles
Semiconducting nanostructured materials
Silicon
Suspensions
title_short Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
title_full Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
title_fullStr Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
title_full_unstemmed Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
title_sort Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
dc.creator.none.fl_str_mv Llansola Portolés, Manuel José
Pis Diez, Reinaldo
Dell'Arciprete, María Laura
Caregnato, Paula
Romero, Juan José
Mártire, Daniel Osvaldo
Azzaroni, Omar
Ceolín, Marcelo Raúl
González, Mónica Cristina
author Llansola Portolés, Manuel José
author_facet Llansola Portolés, Manuel José
Pis Diez, Reinaldo
Dell'Arciprete, María Laura
Caregnato, Paula
Romero, Juan José
Mártire, Daniel Osvaldo
Azzaroni, Omar
Ceolín, Marcelo Raúl
González, Mónica Cristina
author_role author
author2 Pis Diez, Reinaldo
Dell'Arciprete, María Laura
Caregnato, Paula
Romero, Juan José
Mártire, Daniel Osvaldo
Azzaroni, Omar
Ceolín, Marcelo Raúl
González, Mónica Cristina
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Química
Aromatic compounds
Nanoparticles
Semiconducting nanostructured materials
Silicon
Suspensions
topic Química
Aromatic compounds
Nanoparticles
Semiconducting nanostructured materials
Silicon
Suspensions
dc.description.none.fl_txt_mv Silicon nanoparticles of 1–5 nm size (SiNPs) were synthesized by a bottom-up (BU) approach involving a chemical wet method. The contribution of different emitters to the overall excitation–emission matrix was analyzed on the assumption that pure substances existing in a unique form show an excitation wavelength-invariant emission spectrum. The occurrence of emitters differing in size and aggregation was supported by transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), time-resolved single photon counting, and time-resolved anisotropy experiments. The effect on photoluminescence (PL) of the particle surface oxidation as a result of aging is studied and compared to that of surface oxidized particles obtained by a top-down (TD) approach following an electrochemical method with HF etching. Surface oxidation to SiOx seems to introduce two different effects on the SiNP PL. An emission originated in surface states associated to SiOx was identified and observed for SiNPs synthesized by both BU and TD approaches. Blue-shifted excitation–emission spectra associated to a silicon core in embedded SiOx nanostructures were also identified. Theoretical studies were carried out to help understand the observed results.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description Silicon nanoparticles of 1–5 nm size (SiNPs) were synthesized by a bottom-up (BU) approach involving a chemical wet method. The contribution of different emitters to the overall excitation–emission matrix was analyzed on the assumption that pure substances existing in a unique form show an excitation wavelength-invariant emission spectrum. The occurrence of emitters differing in size and aggregation was supported by transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), time-resolved single photon counting, and time-resolved anisotropy experiments. The effect on photoluminescence (PL) of the particle surface oxidation as a result of aging is studied and compared to that of surface oxidized particles obtained by a top-down (TD) approach following an electrochemical method with HF etching. Surface oxidation to SiOx seems to introduce two different effects on the SiNP PL. An emission originated in surface states associated to SiOx was identified and observed for SiNPs synthesized by both BU and TD approaches. Blue-shifted excitation–emission spectra associated to a silicon core in embedded SiOx nanostructures were also identified. Theoretical studies were carried out to help understand the observed results.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/170195
url http://sedici.unlp.edu.ar/handle/10915/170195
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1932-7455
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp2117938
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
11315-11325
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1846783735059447808
score 12.982451

Publicaciones similares