Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows

Detalhes bibliográficos
Autor(a) principal: Batista, C.
Data de Publicação: 2011
Outros Autores: Ribeiro, R. M., Teixeira, Vasco M. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/15777
Resumo: Thermochromic VO2 thin films have successfully been grown on SiO2-coated float glass by reactive DC and pulsed-DC magnetron sputtering. The influence of substitutional doping of V by higher valence cations, such as W, Mo, and Nb, and respective contents on the crystal structure of VO2 is evaluated. Moreover, the effectiveness of each dopant element on the reduction of the intrinsic transition temperature and infrared modulation efficiency of VO2 is discussed. In summary, all the dopant elements–regardless of the concentration, within the studied range– formed a solid solution with VO2, which was the only compound observed by X-ray diffractometry. Nb showed a clear detrimental effect on the crystal structure of VO2. The undoped films presented a marked thermochromic behavior, specially the one prepared by pulsed-DC sputtering. The dopants effectively decreased the transition of VO2 to the proximity of room temperature. However, the IR modulation efficiency is markedly affected as a consequence of the increased metallic character of the semiconducting phase. Tungsten proved to be the most effective element on the reduction of the semiconducting-metal transition temperature, while Mo and Nb showed similar results with the latter being detrimental to the thermochromism.
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spelling Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windowsVO2Thermochromic Thin filmsSynthesisCharacterizationScience & TechnologyThermochromic VO2 thin films have successfully been grown on SiO2-coated float glass by reactive DC and pulsed-DC magnetron sputtering. The influence of substitutional doping of V by higher valence cations, such as W, Mo, and Nb, and respective contents on the crystal structure of VO2 is evaluated. Moreover, the effectiveness of each dopant element on the reduction of the intrinsic transition temperature and infrared modulation efficiency of VO2 is discussed. In summary, all the dopant elements–regardless of the concentration, within the studied range– formed a solid solution with VO2, which was the only compound observed by X-ray diffractometry. Nb showed a clear detrimental effect on the crystal structure of VO2. The undoped films presented a marked thermochromic behavior, specially the one prepared by pulsed-DC sputtering. The dopants effectively decreased the transition of VO2 to the proximity of room temperature. However, the IR modulation efficiency is markedly affected as a consequence of the increased metallic character of the semiconducting phase. Tungsten proved to be the most effective element on the reduction of the semiconducting-metal transition temperature, while Mo and Nb showed similar results with the latter being detrimental to the thermochromism.European Commission - FP6-017761Fundação para a Ciência e a Tecnologia (FCT) - “Termoglaze–Production of thermochromic glazings ”, SFRH/BD/40512/2007.SpringerUniversidade do MinhoBatista, C.Ribeiro, R. M.Teixeira, Vasco M. P.20112011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/15777eng1556-276X10.1186/1556-276X-6-301http://www.springer.com/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:RCAAP2023-07-21T12:26:36Zoai:repositorium.sdum.uminho.pt:1822/15777Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:21:04.057550Repositório 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 Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
title Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
spellingShingle Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
Batista, C.
VO2
Thermochromic Thin films
Synthesis
Characterization
Science & Technology
title_short Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
title_full Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
title_fullStr Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
title_full_unstemmed Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
title_sort Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows
author Batista, C.
author_facet Batista, C.
Ribeiro, R. M.
Teixeira, Vasco M. P.
author_role author
author2 Ribeiro, R. M.
Teixeira, Vasco M. P.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Batista, C.
Ribeiro, R. M.
Teixeira, Vasco M. P.
dc.subject.por.fl_str_mv VO2
Thermochromic Thin films
Synthesis
Characterization
Science & Technology
topic VO2
Thermochromic Thin films
Synthesis
Characterization
Science & Technology
description Thermochromic VO2 thin films have successfully been grown on SiO2-coated float glass by reactive DC and pulsed-DC magnetron sputtering. The influence of substitutional doping of V by higher valence cations, such as W, Mo, and Nb, and respective contents on the crystal structure of VO2 is evaluated. Moreover, the effectiveness of each dopant element on the reduction of the intrinsic transition temperature and infrared modulation efficiency of VO2 is discussed. In summary, all the dopant elements–regardless of the concentration, within the studied range– formed a solid solution with VO2, which was the only compound observed by X-ray diffractometry. Nb showed a clear detrimental effect on the crystal structure of VO2. The undoped films presented a marked thermochromic behavior, specially the one prepared by pulsed-DC sputtering. The dopants effectively decreased the transition of VO2 to the proximity of room temperature. However, the IR modulation efficiency is markedly affected as a consequence of the increased metallic character of the semiconducting phase. Tungsten proved to be the most effective element on the reduction of the semiconducting-metal transition temperature, while Mo and Nb showed similar results with the latter being detrimental to the thermochromism.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/15777
url http://hdl.handle.net/1822/15777
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1556-276X
10.1186/1556-276X-6-301
http://www.springer.com/
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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