Blue or red photoluminescence emission in α-Bi2O3 needles: Effect of synthesis method

dc.contributorFederal University of Technology – Paraná (UTFPR)
dc.contributorUniversidade Estadual de Ponta Grossa (UEPG)
dc.contributorUniversidade de São Paulo (USP)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorFederal University of Grande Dourados (UFGD)
dc.date.accessioned2018-12-11T17:22:33Z
dc.date.available2018-12-11T17:22:33Z
dc.date.created2018-12-11T17:22:33Z
dc.date.issued2018-01-01
dc.identifierLuminescence.
dc.identifier1522-7243
dc.identifier1522-7235
dc.identifierhttp://hdl.handle.net/11449/176802
dc.identifier10.1002/bio.3547
dc.identifier2-s2.0-85052943478
dc.description.abstractMonoclinic bismuth oxide (α-Bi2O3) has attractive optical properties and, therefore, its photoluminescence (PL) behavior has been increasingly explored. Besides this fact, the influence of synthesis methods on PL properties of α-Bi2O3 still requires research. This paper describes the influence of precipitation (PPT) and microwave-assisted hydrothermal (MAH) methods on PL properties of acicular α-Bi2O3 microcrystals. The synthesis method promoted structural modifications on α-Bi2O3, in particular PPT increased the density of oxygen vacancies significantly. As a result, the PL properties of samples were different depending on the method of synthesis. PPT samples presented their maximum PL emission at 1.91 eV (red), while MAH samples had their maximum at 2.61 eV (blue). These results indicate the possibility of controlling PL properties of α-Bi2O3 by simply choosing the adequate synthesis method.
dc.languageeng
dc.relationLuminescence
dc.relation0,396
dc.relation0,396
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectbismuth (III) oxide
dc.subjectmicrowave-assisted hydrothermal synthesis
dc.subjectphotoluminescence
dc.subjectprecipitation synthesis
dc.titleBlue or red photoluminescence emission in α-Bi2O3 needles: Effect of synthesis method
dc.typeArtículos de revistas


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