Probing the effects of oxygen-related defects on the optical and luminescence properties in CaCu3Ti4O12 ceramics

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dc.contributor.authorFelix, A. A. [UNESP]
dc.contributor.authorSpreitzer, M.
dc.contributor.authorVengust, D.
dc.contributor.authorSuvorov, D.
dc.contributor.authorOrlandi, M. O. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionJozef Stefan Institute
dc.date.accessioned2018-12-11T17:21:16Z
dc.date.available2018-12-11T17:21:16Z
dc.date.issued2018-12-01
dc.description.abstractThe formation of oxygen-related lattice defects and their influence on optical and electronic properties in CaCu3Ti4O12 (CCTO) ceramics were studied by controlling the oxygen partial pressure during the sintering process at high temperatures. The samples were analyzed using complementary bulk spectroscopic techniques such as photoluminescence spectroscopy, ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, and electron paramagnetic resonance. Our comprehensive study shows that the oxygen content during sintering process exerts considerable control over the type and concentration of oxygen-related defects in the crystalline CCTO structure. Our results also suggest that the formation of different types of oxygen-related defects in the structure modifies electronic energy levels and thus directly affects the electronic and optical properties of the CCTO phase. These results provided further insight into the important role of oxygen in the crystalline defect arrangement in polycrystalline CCTO ceramics.en
dc.description.affiliationPhysical Chemistry Department Chemistry Institute São Paulo State University (UNESP)
dc.description.affiliationAdvanced Materials Department Jozef Stefan Institute
dc.description.affiliationUnespPhysical Chemistry Department Chemistry Institute São Paulo State University (UNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 09/00367-6
dc.description.sponsorshipIdFAPESP: 13/07296-2
dc.description.sponsorshipIdFAPESP: 13/14647-6
dc.description.sponsorshipIdCNPq: 165902/2015-9
dc.description.sponsorshipIdCNPq: 2012/51195-3
dc.description.sponsorshipIdCNPq: 443138/2016-8
dc.format.extent5002-5006
dc.identifierhttp://dx.doi.org/10.1016/j.jeurceramsoc.2018.06.045
dc.identifier.citationJournal of the European Ceramic Society, v. 38, n. 15, p. 5002-5006, 2018.
dc.identifier.doi10.1016/j.jeurceramsoc.2018.06.045
dc.identifier.file2-s2.0-85049435728.pdf
dc.identifier.issn1873-619X
dc.identifier.issn0955-2219
dc.identifier.scopus2-s2.0-85049435728
dc.identifier.urihttp://hdl.handle.net/11449/176542
dc.language.isoeng
dc.relation.ispartofJournal of the European Ceramic Society
dc.relation.ispartofsjr1,068
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCaCu3Ti4O12
dc.subjectDefects
dc.subjectElectronic structure
dc.subjectOxygen
dc.subjectSpectroscopic techniques
dc.titleProbing the effects of oxygen-related defects on the optical and luminescence properties in CaCu3Ti4O12 ceramicsen
dc.typeArtigo
unesp.author.orcid0000-0002-2054-3235[5]

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