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,...
| Authors: | ; ; ; ; ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2024 |
| Country: | España |
| Institution: | Universidad de Santiago de Compostela (USC) |
| Repository: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| Language: | English |
| OAI Identifier: | oai:minerva.usc.gal:10347/43043 |
| Online Access: | https://hdl.handle.net/10347/43043 |
| Access Level: | Open access |
| Keyword: | ZnAl1.999Ho0.001O4 spinel Raman FTIR UV/Vis spectroscopy Lanthanide |
| _version_ | 1878737332003143680 |
|---|---|
| author | Elhamdi, I. |
| 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 |
| author_browse | Costa, B.F.O. Dhahri, E. Elhamdi, I. Kammoun, S. López Lago, María Elena Pina, J. Souissi, H. Taktak, O. |
| 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 |
| collection | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_9e34b1145a04d2b42f3ab2067b2ee08a |
| institution | Universidad de Santiago de Compostela (USC) |
| instname_str | Universidad de Santiago de Compostela (USC) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:minerva.usc.gal:10347/43043 |
| publishDate | 2024 |
| publishDateSort | 2024 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| spelling | Optical characterization and defect-induced behavior in ZnAl1.999Ho0.001O4 spinel: unraveling novel insights into structure, morphology, and spectroscopic features Elhamdi, I. Souissi, H. Taktak, O. Kammoun, S. Dhahri, E. Pina, J. Costa, B.F.O. López Lago, María Elena ZnAl1.999Ho0.001O4 spinel Raman FTIR UV/Vis spectroscopy Lanthanide 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. Elsevier https://hdl.handle.net/10347/43043 |
| 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 | 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_short | 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 |
| topic | ZnAl1.999Ho0.001O4 spinel Raman FTIR UV/Vis spectroscopy Lanthanide |
| topic_facet | ZnAl1.999Ho0.001O4 spinel Raman FTIR UV/Vis spectroscopy Lanthanide |
| url | https://hdl.handle.net/10347/43043 |