Insights into the Morphology and Structural Defects of Eu-Doped Ceria Nanostructures for Optoelectronic Applications in Red-Emitting Devices

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Federal do ABC (UFABC)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversity of Mar del Plata (UNMdP)-
Autor(es): dc.contributorUniversity of Ferrara (UNIFE)-
Autor(es): dc.contributorUNCPBA-CICPBA-CONICET-
Autor(es): dc.creatorOrtega, Pedro Paulo-
Autor(es): dc.creatorAmoresi, Rafael Aparecido Ciola-
Autor(es): dc.creatorTeodoro, Marcio Daldin-
Autor(es): dc.creatorMerízio, Leonnam Gotardo-
Autor(es): dc.creatorRamirez, Miguel Angel-
Autor(es): dc.creatorAldao, Celso Manuel-
Autor(es): dc.creatorMalagù, Cesare-
Autor(es): dc.creatorPonce, Miguel Adolfo-
Autor(es): dc.creatorLongo, Elson-
Autor(es): dc.creatorSimões, Alexandre Zirpoli-
Data de aceite: dc.date.accessioned2025-08-21T20:27:26Z-
Data de disponibilização: dc.date.available2025-08-21T20:27:26Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-06-14-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/acsanm.4c00875-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301681-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301681-
Descrição: dc.descriptionIn this work, we investigated the synthesis temperature effect on the crystal growth of Eu-doped ceria nanostructures synthesized via the microwave-assisted hydrothermal method and how it influences their red-light emission. Sphere-like nanoparticles, nanorods, nanorods/nanocubes, and nanocubes were obtained by gradually increasing the synthesis temperature. The structural analysis revealed that the nanocubes displayed higher crystallinity and lower structural disorder in comparison to the other morphologies. X-ray photoelectron spectroscopy (XPS) spectroscopy showed that oxygen vacancies were the predominant defect. The intensity of the photoluminescence emissions of the nanocubes was 60 times higher than that of the sphere-like nanoparticles and nanorods, indicating that the structural symmetry in this morphology is suitable for doping with Eu3+, displaying greater photoluminescence efficiency. The nanocubes also displayed excellent red-light emission, with coordinates (0.63,0.37) close to the red RGB primary at (0.64, 0.32). The lifetime values increased with higher synthesis temperatures. This trend suggests a structural correlation of different morphologies, defects, and homogeneity of the Eu3+ distribution in the crystal lattice and the photoluminescence emission and quenching. Therefore, we showed that controlling the morphology of Eu-doped CeO2 nanostructures is a powerful tool to improve its photoluminescence properties, which is valuable for applications as a red phosphor.-
Descrição: dc.descriptionSchool of Engineering of Guaratinguetá São Paulo State University (UNESP)-
Descrição: dc.descriptionFederal University of São Carlos (UFSCar)-
Descrição: dc.descriptionCenter for Engineering Modeling and Applied Social Sciences Federal University of ABC (UFABC)-
Descrição: dc.descriptionSão Carlos Institute of Physics (IFSC) University of São Paulo (USP)-
Descrição: dc.descriptionInstitute of Scientific and Technological Research in Electronics (ICYTE) National Research Council (CONICET) University of Mar del Plata (UNMdP)-
Descrição: dc.descriptionDepartment of Physics and Earth Sciences University of Ferrara (UNIFE)-
Descrição: dc.descriptionPhysics and Engineering Research Center CIFICEN UNCPBA-CICPBA-CONICET-
Descrição: dc.descriptionSchool of Engineering of Guaratinguetá São Paulo State University (UNESP)-
Formato: dc.format12466-12479-
Idioma: dc.languageen-
Relação: dc.relationACS Applied Nano Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCeO2-
Palavras-chave: dc.subjectcrystal growth-
Palavras-chave: dc.subjectcrystal structure-
Palavras-chave: dc.subjectnanostructures-
Palavras-chave: dc.subjectphotoluminescence-
Título: dc.titleInsights into the Morphology and Structural Defects of Eu-Doped Ceria Nanostructures for Optoelectronic Applications in Red-Emitting Devices-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.