Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses

Detalhes bibliográficos
Autor(a) principal: Borges, Joel Nuno Pinto
Data de Publicação: 2015
Outros Autores: Rodrigues, M.S., Lopes, Cláudia Jesus Ribeiro, Costa, D., Couto, F. M., Kubart, T., Martins, B., Duarte, N., Dias, J. P., Cavaleiro, A., Polcar, T., Macedo, Francisco, 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/1822/39818
Resumo: Noble metal powders containing gold and silver have been used for many centuries, providing different colours in the windows of the medieval cathedrals and in ancient Roman glasses. Nowadays, the interest in nanocomposite materials containing noble nanoparticles embedded in dielectric matrices is related with their potential use for a wide range of advanced technological applications. They have been proposed for environmental and biological sensing, tailoring colour of functional coatings, or for surface enhanced Raman spectroscopy. Most of these applications rely on the so-called localised surface plasmon resonance absorption, which is governed by the type of the noble metal nanoparticles, their distribution, size and shape and as well as of the dielectric characteristics of the host matrix. The aim of this work is to study the influence of the composition and thermal annealing on the morphological and structural changes of thin films composed of Ag metal clusters embedded in a dielectric TiO2 matrix. Since changes in size, shape and distribution of the clusters are fundamental parameters for tailoring the properties of plasmonic materials, a set of films with different Ag concentrations was prepared. The optical properties and the thermal behaviour of the films were correlated with the structural and morphological changes promoted by annealing. The films were deposited by DC magnetron sputtering and in order to promote the clustering of the Ag nanoparticles the as-deposited samples were subjected to an in-air annealing protocol. It was demonstrated that the clustering of metallic Ag affects the optical response spectrum and the thermal behaviour of the films.
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spelling Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responsesThin filmsAg clusters dispersed in TiO2Localised surface plasmon resonanceThermal behaviourThermal behaviouraCiências Naturais::Ciências FísicasScience & TechnologyNoble metal powders containing gold and silver have been used for many centuries, providing different colours in the windows of the medieval cathedrals and in ancient Roman glasses. Nowadays, the interest in nanocomposite materials containing noble nanoparticles embedded in dielectric matrices is related with their potential use for a wide range of advanced technological applications. They have been proposed for environmental and biological sensing, tailoring colour of functional coatings, or for surface enhanced Raman spectroscopy. Most of these applications rely on the so-called localised surface plasmon resonance absorption, which is governed by the type of the noble metal nanoparticles, their distribution, size and shape and as well as of the dielectric characteristics of the host matrix. The aim of this work is to study the influence of the composition and thermal annealing on the morphological and structural changes of thin films composed of Ag metal clusters embedded in a dielectric TiO2 matrix. Since changes in size, shape and distribution of the clusters are fundamental parameters for tailoring the properties of plasmonic materials, a set of films with different Ag concentrations was prepared. The optical properties and the thermal behaviour of the films were correlated with the structural and morphological changes promoted by annealing. The films were deposited by DC magnetron sputtering and in order to promote the clustering of the Ag nanoparticles the as-deposited samples were subjected to an in-air annealing protocol. It was demonstrated that the clustering of metallic Ag affects the optical response spectrum and the thermal behaviour of the films.This research was sponsored by FEDER funds through the COMPETE program (Programa Operacional Factores de Competitividade) and by FCT (Fundação para a Ciência e a Tecnologia), under the projects PEST-C/FIS/UI607/2013 and PEst-C/EME/UI0285/2013. The authors also acknowledge the financial support by the project Nano4color – Design and develop a new generation of color PVD coatings for decorative applications (FP7 EC R4SME Project No. 315286). J. Borges also acknowledges the support by the European social fund within the framework of realising the project “Support of inter-sectoral mobility and quality enhancement of research teams at Czech Technical University in Prague”, CZ.1.07/2.3.00/30.0034. C. Lopes acknowledges FCT for the PhD grant SFRH/BD/103373/2014. F.M. Couto acknowledges CAPES – Foundation, Ministry of Education of Brazil, Brasília – DF 70040-20, Brazil, funding by stage sandwich doctorate, through PDSE – Doctoral Program Sandwich.ElsevierUniversidade do MinhoBorges, Joel Nuno PintoRodrigues, M.S.Lopes, Cláudia Jesus RibeiroCosta, D.Couto, F. M.Kubart, T.Martins, B.Duarte, N.Dias, J. P.Cavaleiro, A.Polcar, T.Macedo, FranciscoVaz, F.20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/39818engBorges, J., Rodrigues, M. S., Lopes, C., Costa, D., Couto, F. M., Kubart, T., . . . Vaz, F. (2015). Thin films composed of Ag nanoclusters dispersed in TiO<inf>2</inf>: Influence of composition and thermal annealing on the microstructure and physical responses. Applied Surface Science. doi: 10.1016/j.apsusc.2015.08.1480169-433210.1016/j.apsusc.2015.08.148http://www.sciencedirect.com/science/article/pii/S0169433215019613#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:RCAAP2023-07-21T12:43:35Zoai:repositorium.sdum.uminho.pt:1822/39818Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:41:06.386226Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
title Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
spellingShingle Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
Borges, Joel Nuno Pinto
Thin films
Ag clusters dispersed in TiO2
Localised surface plasmon resonance
Thermal behaviour
Thermal behavioura
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
title_full Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
title_fullStr Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
title_full_unstemmed Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
title_sort Thin films composed of Ag nanoclusters dispersed in TiO2: Influence of composition and thermal annealing on the microstructure and physical responses
author Borges, Joel Nuno Pinto
author_facet Borges, Joel Nuno Pinto
Rodrigues, M.S.
Lopes, Cláudia Jesus Ribeiro
Costa, D.
Couto, F. M.
Kubart, T.
Martins, B.
Duarte, N.
Dias, J. P.
Cavaleiro, A.
Polcar, T.
Macedo, Francisco
Vaz, F.
author_role author
author2 Rodrigues, M.S.
Lopes, Cláudia Jesus Ribeiro
Costa, D.
Couto, F. M.
Kubart, T.
Martins, B.
Duarte, N.
Dias, J. P.
Cavaleiro, A.
Polcar, T.
Macedo, Francisco
Vaz, F.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Borges, Joel Nuno Pinto
Rodrigues, M.S.
Lopes, Cláudia Jesus Ribeiro
Costa, D.
Couto, F. M.
Kubart, T.
Martins, B.
Duarte, N.
Dias, J. P.
Cavaleiro, A.
Polcar, T.
Macedo, Francisco
Vaz, F.
dc.subject.por.fl_str_mv Thin films
Ag clusters dispersed in TiO2
Localised surface plasmon resonance
Thermal behaviour
Thermal behavioura
Ciências Naturais::Ciências Físicas
Science & Technology
topic Thin films
Ag clusters dispersed in TiO2
Localised surface plasmon resonance
Thermal behaviour
Thermal behavioura
Ciências Naturais::Ciências Físicas
Science & Technology
description Noble metal powders containing gold and silver have been used for many centuries, providing different colours in the windows of the medieval cathedrals and in ancient Roman glasses. Nowadays, the interest in nanocomposite materials containing noble nanoparticles embedded in dielectric matrices is related with their potential use for a wide range of advanced technological applications. They have been proposed for environmental and biological sensing, tailoring colour of functional coatings, or for surface enhanced Raman spectroscopy. Most of these applications rely on the so-called localised surface plasmon resonance absorption, which is governed by the type of the noble metal nanoparticles, their distribution, size and shape and as well as of the dielectric characteristics of the host matrix. The aim of this work is to study the influence of the composition and thermal annealing on the morphological and structural changes of thin films composed of Ag metal clusters embedded in a dielectric TiO2 matrix. Since changes in size, shape and distribution of the clusters are fundamental parameters for tailoring the properties of plasmonic materials, a set of films with different Ag concentrations was prepared. The optical properties and the thermal behaviour of the films were correlated with the structural and morphological changes promoted by annealing. The films were deposited by DC magnetron sputtering and in order to promote the clustering of the Ag nanoparticles the as-deposited samples were subjected to an in-air annealing protocol. It was demonstrated that the clustering of metallic Ag affects the optical response spectrum and the thermal behaviour of the films.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
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/1822/39818
url http://hdl.handle.net/1822/39818
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Borges, J., Rodrigues, M. S., Lopes, C., Costa, D., Couto, F. M., Kubart, T., . . . Vaz, F. (2015). Thin films composed of Ag nanoclusters dispersed in TiO<inf>2</inf>: Influence of composition and thermal annealing on the microstructure and physical responses. Applied Surface Science. doi: 10.1016/j.apsusc.2015.08.148
0169-4332
10.1016/j.apsusc.2015.08.148
http://www.sciencedirect.com/science/article/pii/S0169433215019613#
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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)
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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 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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