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dc.contributor.authorSchmidt, Samara [UNESP]
dc.contributor.authorKubaski, Evaldo T.
dc.contributor.authorVolanti, Diogo P. [UNESP]
dc.contributor.authorSequinel, Thiago
dc.contributor.authorBezzon, Vinicius Danilo N. [UNESP]
dc.contributor.authorBeltrán, Armando
dc.contributor.authorTebcherani, Sergio M.
dc.contributor.authorVarela, José A. [UNESP]
dc.date.accessioned2015-12-07T15:40:32Z
dc.date.available2015-12-07T15:40:32Z
dc.date.issued2015-11-02
dc.identifierhttp://dx.doi.org/10.1021/acs.inorgchem.5b01237
dc.identifier.citationInorganic Chemistry, v. 54, n. 21, p. 10184-10191, 2015.
dc.identifier.issn1520-510X
dc.identifier.urihttp://hdl.handle.net/11449/131685
dc.description.abstractMaterials with high photoluminescence (PL) intensity can potentially be used in optical and electronic devices. Although the PL properties of bismuth(III) oxide with a monoclinic crystal structure (α-Bi2O3) have been explored in the past few years, methods of increasing PL emission intensity and information relating PL emission to structural defects are scarce. This research evaluated the effect of a pressure-assisted heat treatment (PAHT) on the PL properties of α-Bi2O3 with a needlelike morphology, which was synthesized via a microwave-assisted hydrothermal (MAH) method. PAHT caused an angular increase between the [BiO6]-[BiO6] clusters of α-Bi2O3, resulting in a significant increase in the PL emission intensity. The Raman and XPS spectra also showed that the α-Bi2O3 PL emissions in the low-energy region (below ∼2.1 eV) are attributed to oxygen vacancies that form defect donor states. The experimental results are in good agreement with first-principles total-energy calculations that were carried out within periodic density functional theory (DFT).en
dc.format.extent10184–10191
dc.language.isoeng
dc.publisherInorganic Chemistry
dc.relation.ispartofInorganic Chemistry
dc.sourcePubMed
dc.titleEffect of pressure-assisted heat treatment on photoluminescence emission of α-Bi2O3 needlesen
dc.typeArtigo
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de Ponta Grossa
dc.contributor.institutionFederal University of Technology
dc.contributor.institutionUniversitat Jaume I
dc.contributor.institutionState University of Ponta Grossa
dc.description.affiliationDepartment of Physical Chemistry, UNESP-Institute of Chemistry , 14800-060 Araraquara, SP Brazil.
dc.description.affiliationDepartment of Materials Engineering, State University of Ponta Grossa , 84030-900 Ponta Grossa, PR Brazil.
dc.description.affiliationDepartment of Chemistry and Environmental Sciences, UNESP-IBILCE , 15054-000 São José do Rio Preto, SP Brazil.
dc.description.affiliationDepartment of Production Engineering, Federal University of Technology-Paraná , 84016-210 Ponta Grossa, PR Brazil.
dc.description.affiliationDepartament de Química Física i Analítica, Universitat Jaume I , Campus del Riu Sec, E-12071 Castelló de la Plana, Spain.
dc.description.affiliationDepartment of Chemistry, State University of Ponta Grossa , 84030-900 Ponta Grossa, PR Brazil.
dc.description.affiliationUnespDepartment of Physical Chemistry, UNESP-Institute of Chemistry , 14800-060 Araraquara, SP Brazil.
dc.description.affiliationUnespDepartment of Chemistry and Environmental Sciences, UNESP-IBILCE , 15054-000 São José do Rio Preto, SP Brazil.
dc.identifier.doi10.1021/acs.inorgchem.5b01237
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt
dc.identifier.pubmed26473463
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