Effects of the Pechini's modified synthetic route on structural and photophysical properties of Eu3+ or Tb3+-doped LaAlO3

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorGarcia, A. B.S. [UNESP]-
Autor(es): dc.creatorBispo-Jr, A. G.-
Autor(es): dc.creatorLima, S. A.M. [UNESP]-
Autor(es): dc.creatorPires, A. M. [UNESP]-
Data de aceite: dc.date.accessioned2022-08-04T22:10:16Z-
Data de disponibilização: dc.date.available2022-08-04T22:10:16Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.materresbull.2021.111462-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/221921-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/221921-
Descrição: dc.descriptionHerein, it is reported the Pechini's synthesis of LaAlO3:Ln3+ (Ln = Eu3+ or Tb3+) varying doping concentration from 1 to 9 at.% to evaluate its influence on structure and luminescence. Sub-micrometric, high-crystalline and monophasic samples with crystallite size smaller than 61 nm were synthesized with activators replacing slightly-distorted LaO12 polyhedra, and occupying two non-equivalent local sites on the surface, and inside them. Upon UV excitation, Eu3+-doped phosphors emit at 620 nm while Tb3+ ones exhibit dominant wavelength within the green spectral region. The excited state lifetimes lie within 2.5–3.4 ms, and as doping percentage increases, luminescence quenching mediated by exchange coupling energy transfer occurs, leading to the 3 and the 7% as the optimal Eu3+ and Tb3+concentrations, respectively. Finally, our proposed route increases the Eu3+ 5D0→7F2 transition relative intensity, compared with others reported, ensuring that this method brings a breakthrough in the optical performance of LaAlO3-based phosphors.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Technology and Sciences-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences Humanities and Exact Sciences-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionInstitute of Chemistry University of Campinas UNICAMP-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Technology and Sciences-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences Humanities and Exact Sciences-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionFAPESP: 2017/13688–1-
Descrição: dc.descriptionCNPq: 2019/23763–6-
Descrição: dc.descriptionCNPq: 304003/2018–2-
Idioma: dc.languageen-
Relação: dc.relationMaterials Research Bulletin-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectEu(III) and Tb(III) doping ions-
Palavras-chave: dc.subjectLanthanum aluminate-
Palavras-chave: dc.subjectLuminescent nanoparticles-
Palavras-chave: dc.subjectPerovskite host lattice-
Palavras-chave: dc.subjectRed and green phosphors-
Título: dc.titleEffects of the Pechini's modified synthetic route on structural and photophysical properties of Eu3+ or Tb3+-doped LaAlO3-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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