Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features

The ZnAl1.999Ho0.001O4 phosphor, prepared by the solid-state method, crystallizes in the cubic spinel structure. Morphology and chemical composition homogeneity were determined via Energy Dispersive X-ray and SEM analysis. The (Eg) optical band gap was evaluated from the UV/vis absorption spectrum,...

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Detalles Bibliográficos
Autores: Elhamdi, I., Souissi, H., Taktak, O., Kammoun, S., Dhahri, E., Pina, J., Costa, B.F.O., López Lago, María Elena
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/43043
Acceso en línea:https://hdl.handle.net/10347/43043
Access Level:acceso abierto
Palabra clave:ZnAl1.999Ho0.001O4 spinel
Raman
FTIR
UV/Vis spectroscopy
Lanthanide
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spelling Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic featuresElhamdi, I.Souissi, H.Taktak, O.Kammoun, S.Dhahri, E.Pina, J.Costa, B.F.O.López Lago, María ElenaZnAl1.999Ho0.001O4 spinelRamanFTIRUV/Vis spectroscopyLanthanideThe ZnAl1.999Ho0.001O4 phosphor, prepared by the solid-state method, crystallizes in the cubic spinel structure. Morphology and chemical composition homogeneity were determined via Energy Dispersive X-ray and SEM analysis. The (Eg) optical band gap was evaluated from the UV/vis absorption spectrum, confirming direct transition behavior according to Tauc’s law. The Urbach energy (Eu) in the ZnAl1.999Ho0.001O4 spinel was higher than that in the ZnAl2O4 spinel, indicating increased disorder and a higher concentration of defects due to Ho3+ ions. The penetration depth (δ(λ)), optical extinction (k(λ)), and refractive index (n(λ)) were assessed across wavelengths (λ). The room temperature absorption spectrum revealed several peaks corresponding to the 4f-4f transitions of Ho3+ ions.ElsevierUniversidade de Santiago de Compostela. Departamento de Física Aplicada20242024-04-3020242024-04-30journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10347/43043reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2© 2024 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/430432026-06-15T12:47:27Z
dc.title.none.fl_str_mv Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
title Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
spellingShingle Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
Elhamdi, I.
ZnAl1.999Ho0.001O4 spinel
Raman
FTIR
UV/Vis spectroscopy
Lanthanide
title_short Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
title_full Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
title_fullStr Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
title_full_unstemmed Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
title_sort Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features
dc.creator.none.fl_str_mv Elhamdi, I.
Souissi, H.
Taktak, O.
Kammoun, S.
Dhahri, E.
Pina, J.
Costa, B.F.O.
López Lago, María Elena
author Elhamdi, I.
author_facet Elhamdi, I.
Souissi, H.
Taktak, O.
Kammoun, S.
Dhahri, E.
Pina, J.
Costa, B.F.O.
López Lago, María Elena
author_role author
author2 Souissi, H.
Taktak, O.
Kammoun, S.
Dhahri, E.
Pina, J.
Costa, B.F.O.
López Lago, María Elena
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de Santiago de Compostela. Departamento de Física Aplicada
dc.subject.none.fl_str_mv ZnAl1.999Ho0.001O4 spinel
Raman
FTIR
UV/Vis spectroscopy
Lanthanide
topic ZnAl1.999Ho0.001O4 spinel
Raman
FTIR
UV/Vis spectroscopy
Lanthanide
description The ZnAl1.999Ho0.001O4 phosphor, prepared by the solid-state method, crystallizes in the cubic spinel structure. Morphology and chemical composition homogeneity were determined via Energy Dispersive X-ray and SEM analysis. The (Eg) optical band gap was evaluated from the UV/vis absorption spectrum, confirming direct transition behavior according to Tauc’s law. The Urbach energy (Eu) in the ZnAl1.999Ho0.001O4 spinel was higher than that in the ZnAl2O4 spinel, indicating increased disorder and a higher concentration of defects due to Ho3+ ions. The penetration depth (δ(λ)), optical extinction (k(λ)), and refractive index (n(λ)) were assessed across wavelengths (λ). The room temperature absorption spectrum revealed several peaks corresponding to the 4f-4f transitions of Ho3+ ions.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-04-30
2024
2024-04-30
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10347/43043
url https://hdl.handle.net/10347/43043
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
© 2024 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
© 2024 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
http://creativecommons.org/licenses/by-nc-nd/4.0/
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:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname:Universidad de Santiago de Compostela (USC)
instname_str Universidad de Santiago de Compostela (USC)
reponame_str Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
collection Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
repository.name.fl_str_mv
repository.mail.fl_str_mv
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