Effects of the thermal treatment on structural and luminescence properties of Er3+-doped aluminophosphosilicate glasses obtained by the sol-gel method

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversité Laval-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorCosta, Beatriz H.-
Autor(es): dc.creatorTayama, Gabriel T.-
Autor(es): dc.creatorRivera, V. A.G.-
Autor(es): dc.creatorMessaddeq, Younès-
Autor(es): dc.creatorSantagneli, Silvia H.-
Data de aceite: dc.date.accessioned2025-08-21T20:38:01Z-
Data de disponibilização: dc.date.available2025-08-21T20:38:01Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-01-04-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2024.177112-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300628-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300628-
Descrição: dc.descriptionTransparent glasses were prepared by vacuum heat-treating erbium-doped aluminophosphosilicate gels prepared using the sol-gel method. The evolution of thematerials structure with heat-treatment was studied by multinuclear solid-state NMR, Infrared and Raman spectroscopies, X-ray diffraction and SEM microscopy. The optical properties of the resulting materials were assessed by UV–Vis–NIR spectroscopy and luminescence of Er3+ ions. Our results showed that the heat treatment under vacuum led to a dense matrix, with an interconnected silicate network through Si-O-Si, Si-O-P and Al-O-P bonds, allowing the formation of different chemical environments for the Er3+ ions. Furthermore, heat treatment under vacuum resulted in a remarkable decrease in OH groups, leading to a 180-fold increase in luminescence intensity and FWHM values of around 100 nm for the sample doped with 0.5 mol.% Er3+. This new approach offers a novel way for fabricating homogeneous transparent glasses with a wide composition range, doped with rare earth elements, yielding the development of new optical devices for telecommunications with broadband NIR emission.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCentre d'optique photonique et laser (COPL) Université Laval-
Descrição: dc.descriptionInstitute of Physics of São Carlos (IFSC) São Paulo University (USP), SP-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionFAPESP: 2018/24735–3-
Idioma: dc.languageen-
Relação: dc.relationJournal of Alloys and Compounds-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAluminophosphosilicate glass-
Palavras-chave: dc.subjectErbium-doped-
Palavras-chave: dc.subjectOptical properties-
Palavras-chave: dc.subjectSol-gel method-
Título: dc.titleEffects of the thermal treatment on structural and luminescence properties of Er3+-doped aluminophosphosilicate glasses obtained by the sol-gel method-
Tipo de arquivo: dc.typelivro digital-
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