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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/62109
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dc.creatorGuilherme Mendes Martinspt_BR
dc.creatorKisla Prislen Félix Siqueirapt_BR
dc.creatorCristiano Fantini Leitept_BR
dc.creatorRoberto Luiz Moreirapt_BR
dc.creatorAnderson Diaspt_BR
dc.date.accessioned2023-12-20T14:58:05Z-
dc.date.available2023-12-20T14:58:05Z-
dc.date.issued2021-
dc.citation.volume238pt_BR
dc.citation.spage118312pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jlumin.2021.118312pt_BR
dc.identifier.issn0022-2313pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/62109-
dc.description.resumoIn this paper, the optical properties of Ln2Ge2O7 ceramics (Ln = lanthanides) were evaluated by diffuse reflectance spectroscopy. Charge transfer band, energy gap, and intraconfigurational f-f transitions were investigated, identified, and discussed as a function of the structural features of the pyrocompounds. A medium band gap of 5.8 eV indicates that the space group has a small influence on this parameter (the triclinic pyrogermanates have slightly lower band gaps than the tetragonal ones), while the f-f electronic transitions could be entirely observed in all samples. In this respect, diffuse reflectance spectroscopy emerged as a powerful tool for the analysis of the intraconfigurational features in lanthanide-containing materials in association with photoluminescence data. The optical features reported in the present work represent an important evolution aiming at the deep knowledge of lanthanide pyrogermanates, which can assist in the development of devices with properties that meet the most advanced technological demands.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetospt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Luminescencept_BR
dc.rightsAcesso Restritopt_BR
dc.subjectPyrogermanatespt_BR
dc.subjectDiffuse reflectance spectroscopypt_BR
dc.subjectPhotoluminescencept_BR
dc.subjectElectronic transitionspt_BR
dc.subjectPyrochlorespt_BR
dc.subjectLanthanidespt_BR
dc.subjectUV–Vispt_BR
dc.subject.otherMetais de terras raras - Propriedades óticaspt_BR
dc.subject.otherFotoluminescênciapt_BR
dc.subject.otherEspectrometria de ultra violetapt_BR
dc.subject.otherMaterial cerâmicopt_BR
dc.titleNew insight on the use of diffuse reflectance spectroscopy for the optical characterization of Ln2Ge2O7 (Ln = lanthanides) pyrogermanatespt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0022231321004282pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7620-6708pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6344-3103pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0436-7857pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6820-0269pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7413-1087pt_BR
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