Suppression of vapor-liquid-solid (VLS) mechanism in the growth of α-Sb2O4 nanobelts by a vapor-deposition approach

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dc.contributor.authorGonçalves, Rosana A. [UNESP]
dc.contributor.authorda Silva Barros, Herick H. [UNESP]
dc.contributor.authorAraujo, Luana S. [UNESP]
dc.contributor.authorAntunes, Erica F. [UNESP]
dc.contributor.authorQuade, Antje
dc.contributor.authorTeodoro, Marcio D.
dc.contributor.authorBaldan, Maurício R.
dc.contributor.authorBerengue, Olivia M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionINP Greifswald
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionNational Institute of Space Research (INPE)
dc.date.accessioned2021-06-25T11:02:15Z
dc.date.available2021-06-25T11:02:15Z
dc.date.issued2021-11-01
dc.description.abstractIn this work we report on the synthesis of novel α-Sb2O4 nanostructures synthesized by a gold catalyzed vapor deposition method in which metallic Sb is used as a precursor. Belts, rods and zigzag morphologies were obtained and characterized by a group of techniques which also provided data on crystalline structure and compositional aspects. Structural characterizations revealed that although the addition of gold nanoparticles plays an important role in the final growth of the nanostructures, no evidence of this element was found in the as-grown samples. In order to clarify the causes of the suppression of the VLS mechanism in these conditions, we carried out experiments in which the syntheses were interrupted in a controlled manner. Our findings revealed that at the early stages of the growth VLS mechanism is suppressed when high levels of Sb supersaturation are reached. A thick crystalline oxide layer rapidly grows at the liquid-gas interface providing preferential sites for the VS growth to take place. Low temperature photoluminescence measurements revealed a strong emission in the visible portion of electromagnetic spectra which can be associated to the presence of oxygen vacancies in these nanostructures.en
dc.description.affiliationDepartment of Physics São Paulo State University (UNESP) School of Engineering, CEP 12.516-410, Guaratinguetá
dc.description.affiliationINP Greifswald, Felix-Hausdorff-Str.2
dc.description.affiliationDepartamento de Física Universidade Federal de São Carlos, São Carlos – SP
dc.description.affiliationPDM3A - Department of Space Engineering and Technology National Institute of Space Research (INPE), São José dos Campos
dc.description.affiliationUnespDepartment of Physics São Paulo State University (UNESP) School of Engineering, CEP 12.516-410, Guaratinguetá
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdFAPESP: 2015/21816-4
dc.identifierhttp://dx.doi.org/10.1016/j.mssp.2021.106006
dc.identifier.citationMaterials Science in Semiconductor Processing, v. 134.
dc.identifier.doi10.1016/j.mssp.2021.106006
dc.identifier.issn1369-8001
dc.identifier.scopus2-s2.0-85107704764
dc.identifier.urihttp://hdl.handle.net/11449/207857
dc.language.isoeng
dc.relation.ispartofMaterials Science in Semiconductor Processing
dc.sourceScopus
dc.subjectNanorods
dc.subjectSb2O4
dc.subjectVLS supression
dc.subjectVS mechanism
dc.subjectZigzag nanobelts
dc.titleSuppression of vapor-liquid-solid (VLS) mechanism in the growth of α-Sb2O4 nanobelts by a vapor-deposition approachen
dc.typeArtigo
unesp.author.orcid0000-0003-0814-4319[5]
unesp.author.orcid0000-0002-0919-3289[8]

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