Unveiling photoluminescent response of Ce-doped CaCu3Ti4O12: An experimental-theoretical approach

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dc.contributor.authorMoreno, H. [UNESP]
dc.contributor.authorDamm, M. [UNESP]
dc.contributor.authorFreitas, S. M.
dc.contributor.authorRezende, M. V.S.
dc.contributor.authorSimões, A. Z. [UNESP]
dc.contributor.authorBiasotto, G. [UNESP]
dc.contributor.authorMastelaro, V. R.
dc.contributor.authorTeixeira, V. C.
dc.contributor.authorRamirez, M. A. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionBrazilian Center for Research in Energy and Materials (CNPEM)
dc.date.accessioned2023-03-02T08:36:30Z
dc.date.available2023-03-02T08:36:30Z
dc.date.issued2022-11-25
dc.description.abstractCaCu3Ti4O12: x% Ce (x = 0.00, 0.25, 0.50, 0.75, and 1.00) ceramic composites were prepared via solid-state reaction. Theoretical atomistic simulations were combined with experimental techniques to uncover Ce effects in the (micro)structure and photoluminescence of CaCu3Ti4O12-based ceramics. Application of perovskites ceramics in optoelectronics have been limited by their specific, narrow emission range, which compromise operational efficiency, pushing for the development of novel perovskite-emissive materials. This study results confirm that Ce ions are incorporated at Ca sites within the CaCu3Ti4O12 lattice, inducing point metal and oxygen vacancies in the optical bandgap region. Shallow-level defects (VCa′′/VO⦁⦁) were associated with broadband violet-blue photoluminescent (PL) emissions. Better color rendering may be a direct consequence of crystalline field splitting/wider PL emission. Furthermore, results demonstrate that PL on CaCu3Ti4O12: Ce system intensity can be modulated by structural defects, making it promising for applications in optoelectronics.en
dc.description.affiliationSao Paulo State University – UNESP Faculty of Engineering of Guaratingueta, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, SP
dc.description.affiliationFederal University of Sergipe (UFS) – Center for Exact Sciences and Technology (CCET) Department of Physics, Marechal Rondon s/n, Jardim Rosa Elze, SE
dc.description.affiliationSão Paulo State University – UNESP Chemistry Institute, Rua Prof. Francisco Degni, 55, Quitandinha, SP
dc.description.affiliationSão Carlos Institute of Physics University of São Paulo, PO Box 369, SP
dc.description.affiliationBrazilian Synchrotron Light Laboratory (LNLS) Brazilian Center for Research in Energy and Materials (CNPEM), Campinas
dc.description.affiliationUnespSao Paulo State University – UNESP Faculty of Engineering of Guaratingueta, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, SP
dc.description.affiliationUnespSão Paulo State University – UNESP Chemistry Institute, Rua Prof. Francisco Degni, 55, Quitandinha, SP
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2022.166185
dc.identifier.citationJournal of Alloys and Compounds, v. 923.
dc.identifier.doi10.1016/j.jallcom.2022.166185
dc.identifier.issn0925-8388
dc.identifier.scopus2-s2.0-85134561046
dc.identifier.urihttp://hdl.handle.net/11449/242058
dc.language.isoeng
dc.relation.ispartofJournal of Alloys and Compounds
dc.sourceScopus
dc.subjectCaCu3Ti4O12
dc.subjectCe-doped
dc.subjectComputing simulations
dc.subjectOptoelectronics
dc.subjectPhotoluminescence
dc.titleUnveiling photoluminescent response of Ce-doped CaCu3Ti4O12: An experimental-theoretical approachen
dc.typeArtigo
unesp.departmentMateriais e Tecnologia - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências