Structural and optical studies of Au doped titanium oxide films

Detalhes bibliográficos
Autor(a) principal: Alves, E.
Data de Publicação: 2012
Outros Autores: Franco, N., Barradas, N. P., Nunes, B., Lopes, J., Cavaleiro, A., Torrell, M., Cunha, L., Vaz, F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/21196
https://doi.org/10.1016/j.nimb.2011.01.033
Resumo: Proceedings of the 17th International Conference on Ion Beam Modification of Materials (IBMM 2010)
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spelling Structural and optical studies of Au doped titanium oxide filmsIon ImplantationTiO2 filmsAu nanoparticlesRutherford Backscattering SpectrometryOptical absorptionProceedings of the 17th International Conference on Ion Beam Modification of Materials (IBMM 2010)Thin films of TiO2 were doped with Au by ion implantation and in situ during the deposition. The films were grown by reactive magnetron sputtering and deposited in silicon and glass substrates at a temperature around 150 °C. The undoped films were implanted with Au fluences in the range of 5 × 1015 Au/cm2–1 × 1017 Au/cm2 with a energy of 150 keV. At a fluence of 5 × 1016 Au/cm2 the formation of Au nanoclusters in the films is observed during the implantation at room temperature. The clustering process starts to occur during the implantation where XRD estimates the presence of 3–5 nm precipitates. After annealing in a reducing atmosphere, the small precipitates coalesce into larger ones following an Ostwald ripening mechanism. In situ XRD studies reveal that Au atoms start to coalesce at 350 °C, reaching the precipitates dimensions larger than 40 nm at 600 °C. Annealing above 700 °C promotes drastic changes in the Au profile of in situ doped films with the formation of two Au rich regions at the interface and surface respectively. The optical properties reveal the presence of a broad band centered at 550 nm related to the plasmon resonance of gold particles visible in AFM maps.Elsevier2012-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/21196http://hdl.handle.net/10316/21196https://doi.org/10.1016/j.nimb.2011.01.033engALVES, E. [et al.] - Structural and optical studies of Au doped titanium oxide films. "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms". ISSN 0168-583X. Vol. 272 (2012) p. 61-650168-583Xhttp://www.sciencedirect.com/science/article/pii/S0168583X11000528Alves, E.Franco, N.Barradas, N. P.Nunes, B.Lopes, J.Cavaleiro, A.Torrell, M.Cunha, L.Vaz, F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2019-06-02T10:20:36ZPortal AgregadorONG
dc.title.none.fl_str_mv Structural and optical studies of Au doped titanium oxide films
title Structural and optical studies of Au doped titanium oxide films
spellingShingle Structural and optical studies of Au doped titanium oxide films
Alves, E.
Ion Implantation
TiO2 films
Au nanoparticles
Rutherford Backscattering Spectrometry
Optical absorption
title_short Structural and optical studies of Au doped titanium oxide films
title_full Structural and optical studies of Au doped titanium oxide films
title_fullStr Structural and optical studies of Au doped titanium oxide films
title_full_unstemmed Structural and optical studies of Au doped titanium oxide films
title_sort Structural and optical studies of Au doped titanium oxide films
author Alves, E.
author_facet Alves, E.
Franco, N.
Barradas, N. P.
Nunes, B.
Lopes, J.
Cavaleiro, A.
Torrell, M.
Cunha, L.
Vaz, F.
author_role author
author2 Franco, N.
Barradas, N. P.
Nunes, B.
Lopes, J.
Cavaleiro, A.
Torrell, M.
Cunha, L.
Vaz, F.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Alves, E.
Franco, N.
Barradas, N. P.
Nunes, B.
Lopes, J.
Cavaleiro, A.
Torrell, M.
Cunha, L.
Vaz, F.
dc.subject.por.fl_str_mv Ion Implantation
TiO2 films
Au nanoparticles
Rutherford Backscattering Spectrometry
Optical absorption
topic Ion Implantation
TiO2 films
Au nanoparticles
Rutherford Backscattering Spectrometry
Optical absorption
description Proceedings of the 17th International Conference on Ion Beam Modification of Materials (IBMM 2010)
publishDate 2012
dc.date.none.fl_str_mv 2012-02
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/21196
http://hdl.handle.net/10316/21196
https://doi.org/10.1016/j.nimb.2011.01.033
url http://hdl.handle.net/10316/21196
https://doi.org/10.1016/j.nimb.2011.01.033
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv ALVES, E. [et al.] - Structural and optical studies of Au doped titanium oxide films. "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms". ISSN 0168-583X. Vol. 272 (2012) p. 61-65
0168-583X
http://www.sciencedirect.com/science/article/pii/S0168583X11000528
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv
repository.mail.fl_str_mv
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