Defect-induced photoluminescence of powdered silica glass
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4028/www.scientific.net/DDF.273-276.479 http://hdl.handle.net/11449/70350 |
Resumo: | Visible photoluminescence was generated in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The broad emission band maximum shows a linear dependence on the exciting wavelength, suggesting the possibility to tune the PL emission. The photoluminescence was attributed to defect generation related to unsatisfied chemical bonds due to the high surface area. Raman scattering and ultraviolet-visible optical reflectance measurements corroborate this assertion. Transmission electron microscopy measurements indicate that the powder is composed by nanocrystallites with about 10-20 nanometers immersed in an amorphous media. |
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Repositório Institucional da UNESP |
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Defect-induced photoluminescence of powdered silica glassAttrition millPhotoluminescenceSilica glassSurface defectsEmission bandHigh-energy attrition millOptical reflectance measurementsCrystal defectsMechanical alloyingPowder metallurgyReflectometersTransmission electron microscopyFused silicaVisible photoluminescence was generated in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The broad emission band maximum shows a linear dependence on the exciting wavelength, suggesting the possibility to tune the PL emission. The photoluminescence was attributed to defect generation related to unsatisfied chemical bonds due to the high surface area. Raman scattering and ultraviolet-visible optical reflectance measurements corroborate this assertion. Transmission electron microscopy measurements indicate that the powder is composed by nanocrystallites with about 10-20 nanometers immersed in an amorphous media.Departamento de Física Universidade Federal de São Carlos, Caixa Postal 676, 13565-905 São Carlos, São PauloDepartamento de Química Faculdade de Ciências Universidade Estadual Paulista, Av. Luis E. C. Coube, 14-01, Bauru, São PauloDepartamento de Química Universidade Federal de São Carlos, Caixa Postal 676, 13565-905 São Carlos, São PauloDepartamento de Química Faculdade de Ciências Universidade Estadual Paulista, Av. Luis E. C. Coube, 14-01, Bauru, São PauloUniversidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (Unesp)Pizani, P. S.Joya, M. R.Pontes, F. M. [UNESP]Santos, L. P SGodinho, M.Leite, E. R.Longo, Elson [UNESP]2014-05-27T11:22:49Z2014-05-27T11:22:49Z2008-03-27info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject479-484http://dx.doi.org/10.4028/www.scientific.net/DDF.273-276.479Defect and Diffusion Forum, v. 273-276, p. 479-484.1012-0386http://hdl.handle.net/11449/7035010.4028/www.scientific.net/DDF.273-276.4792-s2.0-40949144941Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengDefect and Diffusion Forum0,129info:eu-repo/semantics/openAccess2024-04-29T18:17:23Zoai:repositorio.unesp.br:11449/70350Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:35:23.057779Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Defect-induced photoluminescence of powdered silica glass |
title |
Defect-induced photoluminescence of powdered silica glass |
spellingShingle |
Defect-induced photoluminescence of powdered silica glass Pizani, P. S. Attrition mill Photoluminescence Silica glass Surface defects Emission band High-energy attrition mill Optical reflectance measurements Crystal defects Mechanical alloying Powder metallurgy Reflectometers Transmission electron microscopy Fused silica |
title_short |
Defect-induced photoluminescence of powdered silica glass |
title_full |
Defect-induced photoluminescence of powdered silica glass |
title_fullStr |
Defect-induced photoluminescence of powdered silica glass |
title_full_unstemmed |
Defect-induced photoluminescence of powdered silica glass |
title_sort |
Defect-induced photoluminescence of powdered silica glass |
author |
Pizani, P. S. |
author_facet |
Pizani, P. S. Joya, M. R. Pontes, F. M. [UNESP] Santos, L. P S Godinho, M. Leite, E. R. Longo, Elson [UNESP] |
author_role |
author |
author2 |
Joya, M. R. Pontes, F. M. [UNESP] Santos, L. P S Godinho, M. Leite, E. R. Longo, Elson [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pizani, P. S. Joya, M. R. Pontes, F. M. [UNESP] Santos, L. P S Godinho, M. Leite, E. R. Longo, Elson [UNESP] |
dc.subject.por.fl_str_mv |
Attrition mill Photoluminescence Silica glass Surface defects Emission band High-energy attrition mill Optical reflectance measurements Crystal defects Mechanical alloying Powder metallurgy Reflectometers Transmission electron microscopy Fused silica |
topic |
Attrition mill Photoluminescence Silica glass Surface defects Emission band High-energy attrition mill Optical reflectance measurements Crystal defects Mechanical alloying Powder metallurgy Reflectometers Transmission electron microscopy Fused silica |
description |
Visible photoluminescence was generated in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The broad emission band maximum shows a linear dependence on the exciting wavelength, suggesting the possibility to tune the PL emission. The photoluminescence was attributed to defect generation related to unsatisfied chemical bonds due to the high surface area. Raman scattering and ultraviolet-visible optical reflectance measurements corroborate this assertion. Transmission electron microscopy measurements indicate that the powder is composed by nanocrystallites with about 10-20 nanometers immersed in an amorphous media. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03-27 2014-05-27T11:22:49Z 2014-05-27T11:22:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4028/www.scientific.net/DDF.273-276.479 Defect and Diffusion Forum, v. 273-276, p. 479-484. 1012-0386 http://hdl.handle.net/11449/70350 10.4028/www.scientific.net/DDF.273-276.479 2-s2.0-40949144941 |
url |
http://dx.doi.org/10.4028/www.scientific.net/DDF.273-276.479 http://hdl.handle.net/11449/70350 |
identifier_str_mv |
Defect and Diffusion Forum, v. 273-276, p. 479-484. 1012-0386 10.4028/www.scientific.net/DDF.273-276.479 2-s2.0-40949144941 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Defect and Diffusion Forum 0,129 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
479-484 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128675048062976 |