Nd:YAG laser scribed zinc oxide on semi-flexible copper foils
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/32793 |
Resumo: | In this work, a novel approach to synthesise zinc oxide (ZnO) directly on flexible copper substrates is proposed. The produced samples show a foam-like morphology made of agglomerates of small ZnO particles when processed at laser energy density of 18.0 J/cm2. On the other hand, the samples processed at higher beam energy density, i.e. 33.2 J/cm2, resulted in a more granular morphology, with some ZnO particles dispersed over the sample’s surface. Raman spectroscopy measurements demonstrated that this method resulted in the formation of wurtzite-ZnO crystalline phase in all samples. Room temperature photoluminescence spectroscopy analysis revealed the presence of a broad visible band in the orange-red region dominating the spectra, with a small contribution from the near band edge emission in the UV spectral region. Decreasing the beam energy fluence from 33.2 to 18.0 J/cm2 resulted in samples with higher overall visible band intensity, in line with what was observed for their crystalline quality. Moreover, the shift of the broad band maxima towards longer wavelengths could be an indication of the possibility of tuning the visible emission according to the chosen laser processing conditions. |
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Nd:YAG laser scribed zinc oxide on semi-flexible copper foilsZinc oxideCopperLaser processingOxidationSpectroscopyIn this work, a novel approach to synthesise zinc oxide (ZnO) directly on flexible copper substrates is proposed. The produced samples show a foam-like morphology made of agglomerates of small ZnO particles when processed at laser energy density of 18.0 J/cm2. On the other hand, the samples processed at higher beam energy density, i.e. 33.2 J/cm2, resulted in a more granular morphology, with some ZnO particles dispersed over the sample’s surface. Raman spectroscopy measurements demonstrated that this method resulted in the formation of wurtzite-ZnO crystalline phase in all samples. Room temperature photoluminescence spectroscopy analysis revealed the presence of a broad visible band in the orange-red region dominating the spectra, with a small contribution from the near band edge emission in the UV spectral region. Decreasing the beam energy fluence from 33.2 to 18.0 J/cm2 resulted in samples with higher overall visible band intensity, in line with what was observed for their crystalline quality. Moreover, the shift of the broad band maxima towards longer wavelengths could be an indication of the possibility of tuning the visible emission according to the chosen laser processing conditions.Elsevier2021-12-23T12:43:32Z2020-03-01T00:00:00Z2020-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/32793eng2590-150810.1016/j.mlblux.2020.100038Gaspar, GuilhermeRodrigues, JoanaFernandes, António J.S.Soares, Maria R.Monteiro, TeresaSilva, Rui F.Costa, Florinda M.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:RCAAP2024-02-22T12:03:02Zoai:ria.ua.pt:10773/32793Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:04:18.879884Repositório 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 |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
title |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
spellingShingle |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils Gaspar, Guilherme Zinc oxide Copper Laser processing Oxidation Spectroscopy |
title_short |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
title_full |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
title_fullStr |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
title_full_unstemmed |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
title_sort |
Nd:YAG laser scribed zinc oxide on semi-flexible copper foils |
author |
Gaspar, Guilherme |
author_facet |
Gaspar, Guilherme Rodrigues, Joana Fernandes, António J.S. Soares, Maria R. Monteiro, Teresa Silva, Rui F. Costa, Florinda M. |
author_role |
author |
author2 |
Rodrigues, Joana Fernandes, António J.S. Soares, Maria R. Monteiro, Teresa Silva, Rui F. Costa, Florinda M. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Gaspar, Guilherme Rodrigues, Joana Fernandes, António J.S. Soares, Maria R. Monteiro, Teresa Silva, Rui F. Costa, Florinda M. |
dc.subject.por.fl_str_mv |
Zinc oxide Copper Laser processing Oxidation Spectroscopy |
topic |
Zinc oxide Copper Laser processing Oxidation Spectroscopy |
description |
In this work, a novel approach to synthesise zinc oxide (ZnO) directly on flexible copper substrates is proposed. The produced samples show a foam-like morphology made of agglomerates of small ZnO particles when processed at laser energy density of 18.0 J/cm2. On the other hand, the samples processed at higher beam energy density, i.e. 33.2 J/cm2, resulted in a more granular morphology, with some ZnO particles dispersed over the sample’s surface. Raman spectroscopy measurements demonstrated that this method resulted in the formation of wurtzite-ZnO crystalline phase in all samples. Room temperature photoluminescence spectroscopy analysis revealed the presence of a broad visible band in the orange-red region dominating the spectra, with a small contribution from the near band edge emission in the UV spectral region. Decreasing the beam energy fluence from 33.2 to 18.0 J/cm2 resulted in samples with higher overall visible band intensity, in line with what was observed for their crystalline quality. Moreover, the shift of the broad band maxima towards longer wavelengths could be an indication of the possibility of tuning the visible emission according to the chosen laser processing conditions. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-03-01T00:00:00Z 2020-03 2021-12-23T12:43:32Z |
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/10773/32793 |
url |
http://hdl.handle.net/10773/32793 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2590-1508 10.1016/j.mlblux.2020.100038 |
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) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137698839003136 |