Photoluminescence activity of Ba1-xCaxTiO3: dependence on particle size and morphology
dc.contributor.author | Souza, Agda Eunice [UNESP] | |
dc.contributor.author | Teixeira, Silvio Rainho [UNESP] | |
dc.contributor.author | Morilla-Santos, Cassio | |
dc.contributor.author | Schreiner, Wido Herwig | |
dc.contributor.author | Lisboa Filho, Paulo Noronha [UNESP] | |
dc.contributor.author | Longo, Elson [UNESP] | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Univ Fed Parana | |
dc.date.accessioned | 2015-03-18T15:54:18Z | |
dc.date.available | 2015-03-18T15:54:18Z | |
dc.date.issued | 2014-01-01 | |
dc.description.abstract | It was shown that the higher photoluminescence emission of Ba1-xCaxTiO3 titanates is associated with the substitution of Ba by Ca, for the composition x = 0.75, which interferes with structural ordering, morphology and particle growth. Although the XRD data of this sample showed that the crystals do not exhibit long range order, FTIR, Raman and XPS confirmed the presence of Ti-O bonds in this sample, indicating the particle nucleation of titanates, but without growth and maintaining only short range order. These nanoparticles show perturbations in the symmetry of the unit cell, causing structural distortions, which result in changes in their electronic structure of atoms, destabilizing the whole lattice. This fact gives rise to points of intrinsic defects, changing the intermediate levels in the band gap, subsequently adding to the population of charge carriers and, consequently, radiative recombination with higher photoluminescence emission. | en |
dc.description.affiliation | Univ Estadual Paulista, Fac Ciencias & Tecnol, Dept Fis Quim & Biol, Presidente Prudente, SP, Brazil | |
dc.description.affiliation | Univ Fed Parana, Inst Tecnol Desenvolvimento LACTEC, BR-80060000 Curitiba, Parana, Brazil | |
dc.description.affiliation | Univ Fed Parana, Dept Fis, BR-80060000 Curitiba, Parana, Brazil | |
dc.description.affiliation | Univ Estadual Paulista, Fac Ciencias, Dept Fis, Bauru, SP, Brazil | |
dc.description.affiliation | Univ Estadual Paulista, Inst Quim, Araraquara, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, Fac Ciencias & Tecnol, Dept Fis Quim & Biol, Presidente Prudente, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, Fac Ciencias, Dept Fis, Bauru, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, Inst Quim, Araraquara, SP, Brazil | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description.sponsorship | INCTMN | |
dc.description.sponsorshipId | FAPESP: 13/07296-2 | |
dc.description.sponsorshipId | CNPq: 573636/2008-7 | |
dc.description.sponsorshipId | INCTMN2008/57872-1 | |
dc.format.extent | 7056-7070 | |
dc.identifier | http://dx.doi.org/10.1039/c4tc00897a | |
dc.identifier.citation | Journal Of Materials Chemistry C. Cambridge: Royal Soc Chemistry, v. 2, n. 34, p. 7056-7070, 2014. | |
dc.identifier.doi | 10.1039/c4tc00897a | |
dc.identifier.issn | 2050-7526 | |
dc.identifier.lattes | 9256541983393135 | |
dc.identifier.lattes | 1353862414532005 | |
dc.identifier.orcid | 0000-0002-7734-4069 | |
dc.identifier.uri | http://hdl.handle.net/11449/116869 | |
dc.identifier.wos | WOS:000340587100018 | |
dc.language.iso | eng | |
dc.publisher | Royal Soc Chemistry | |
dc.relation.ispartof | Journal Of Materials Chemistry C | |
dc.relation.ispartofjcr | 5.976 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.title | Photoluminescence activity of Ba1-xCaxTiO3: dependence on particle size and morphology | en |
dc.type | Artigo | |
dcterms.rightsHolder | Royal Soc Chemistry | |
unesp.author.lattes | 9256541983393135 | |
unesp.author.lattes | 1353862414532005[5] | |
unesp.author.orcid | 0000-0002-7734-4069[5] | |
unesp.campus | Universidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudente | pt |
unesp.campus | Universidade Estadual Paulista (Unesp), Faculdade de Ciências, Bauru | pt |
unesp.department | Física - FC | pt |
unesp.department | Física, Química e Biologia - FCT | pt |