Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy
Autor(a) principal: | |
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Data de Publicação: | 2003 |
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/10316/4268 https://doi.org/10.1016/S0925-3467(03)00143-5 |
Resumo: | In the aim of better understand the influence of oxygen on the luminescent properties of Er:AlN films, two samples synthesized by radiofrequency reactive magnetron sputtering, have been analysed by site-selective spectroscopy around 1.55 [mu]m and compared to a reference aluminosilicate sample. The erbium content in the films was estimated to 3.3 at.% and oxygen content ranges from 6.2 at.% to 58.6 at.% (determination by EPMA). Line narrowing study was performed for values 6.2 at.% and 22.5 at.%. Both films were annealed at 1075 K for 1 h. Site-selective spectroscopy was carried out using a Ti:sapphire laser light with typical linewidth of 2 GHz tuned around 980 nm as the excitation source. The samples were cooled down to 1.5 K in a liquid-helium bath cryostat and their 4I13/2<-->4I15/2 luminescence was detected using a high-sensitivity germanium-cooled detector. It appears that the site distribution of the Er:AlN samples is not continuous as in classical aluminosilicate glass but presents a rupture that suggests the existence of two kinds of sites for erbium: oxygen site and nitrogen site. These observations can easily be interpreted within the framework of the nephelauxetic effect that explains a shift of the site distribution to the longer wavelengths with an increase of boundings bonding covalency. |
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Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopyPhotoluminescenceIn the aim of better understand the influence of oxygen on the luminescent properties of Er:AlN films, two samples synthesized by radiofrequency reactive magnetron sputtering, have been analysed by site-selective spectroscopy around 1.55 [mu]m and compared to a reference aluminosilicate sample. The erbium content in the films was estimated to 3.3 at.% and oxygen content ranges from 6.2 at.% to 58.6 at.% (determination by EPMA). Line narrowing study was performed for values 6.2 at.% and 22.5 at.%. Both films were annealed at 1075 K for 1 h. Site-selective spectroscopy was carried out using a Ti:sapphire laser light with typical linewidth of 2 GHz tuned around 980 nm as the excitation source. The samples were cooled down to 1.5 K in a liquid-helium bath cryostat and their 4I13/2<-->4I15/2 luminescence was detected using a high-sensitivity germanium-cooled detector. It appears that the site distribution of the Er:AlN samples is not continuous as in classical aluminosilicate glass but presents a rupture that suggests the existence of two kinds of sites for erbium: oxygen site and nitrogen site. These observations can easily be interpreted within the framework of the nephelauxetic effect that explains a shift of the site distribution to the longer wavelengths with an increase of boundings bonding covalency.http://www.sciencedirect.com/science/article/B6TXP-48FCJGJ-C/1/f53f4c28f70e897b4b96058df7e50da12003info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4268http://hdl.handle.net/10316/4268https://doi.org/10.1016/S0925-3467(03)00143-5engOptical Materials. 24:1-2 (2003) 321-325Oliveira, J. C.Cavaleiro, A.Vieira, M. T.Bigot, L.Garapon, C.Jacquier, B.Mugnier, J.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:RCAAP2020-11-06T16:59:54Zoai:estudogeral.uc.pt:10316/4268Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:28.490817Repositório 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 |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
title |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
spellingShingle |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy Oliveira, J. C. Photoluminescence |
title_short |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
title_full |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
title_fullStr |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
title_full_unstemmed |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
title_sort |
Oxygen sensitivity of erbium-doped AlN films probed by site selective spectroscopy |
author |
Oliveira, J. C. |
author_facet |
Oliveira, J. C. Cavaleiro, A. Vieira, M. T. Bigot, L. Garapon, C. Jacquier, B. Mugnier, J. |
author_role |
author |
author2 |
Cavaleiro, A. Vieira, M. T. Bigot, L. Garapon, C. Jacquier, B. Mugnier, J. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, J. C. Cavaleiro, A. Vieira, M. T. Bigot, L. Garapon, C. Jacquier, B. Mugnier, J. |
dc.subject.por.fl_str_mv |
Photoluminescence |
topic |
Photoluminescence |
description |
In the aim of better understand the influence of oxygen on the luminescent properties of Er:AlN films, two samples synthesized by radiofrequency reactive magnetron sputtering, have been analysed by site-selective spectroscopy around 1.55 [mu]m and compared to a reference aluminosilicate sample. The erbium content in the films was estimated to 3.3 at.% and oxygen content ranges from 6.2 at.% to 58.6 at.% (determination by EPMA). Line narrowing study was performed for values 6.2 at.% and 22.5 at.%. Both films were annealed at 1075 K for 1 h. Site-selective spectroscopy was carried out using a Ti:sapphire laser light with typical linewidth of 2 GHz tuned around 980 nm as the excitation source. The samples were cooled down to 1.5 K in a liquid-helium bath cryostat and their 4I13/2<-->4I15/2 luminescence was detected using a high-sensitivity germanium-cooled detector. It appears that the site distribution of the Er:AlN samples is not continuous as in classical aluminosilicate glass but presents a rupture that suggests the existence of two kinds of sites for erbium: oxygen site and nitrogen site. These observations can easily be interpreted within the framework of the nephelauxetic effect that explains a shift of the site distribution to the longer wavelengths with an increase of boundings bonding covalency. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003 |
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/10316/4268 http://hdl.handle.net/10316/4268 https://doi.org/10.1016/S0925-3467(03)00143-5 |
url |
http://hdl.handle.net/10316/4268 https://doi.org/10.1016/S0925-3467(03)00143-5 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Optical Materials. 24:1-2 (2003) 321-325 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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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 |
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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) |
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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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