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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/75110
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dc.contributor.authorMarletta, Alexandre-
dc.contributor.authorCurcino Da Silva, Silésia de Fátima-
dc.contributor.authorPiovesan, Erick-
dc.contributor.authorCampos, K. R.-
dc.contributor.authorSantos Silva, Hugo-
dc.contributor.authorDe Souza, N. C.-
dc.contributor.authorLetícia Vega, Maria-
dc.contributor.authorRaposo, Maria-
dc.contributor.authorConstantino, Carlos J. L-
dc.contributor.authorSilva, Raigna A.-
dc.contributor.authorOliveira Jr., Osvaldo N.-
dc.date.accessioned2014-05-27T11:28:55Z-
dc.date.accessioned2016-10-25T18:47:24Z-
dc.date.available2014-05-27T11:28:55Z-
dc.date.available2016-10-25T18:47:24Z-
dc.date.issued2013-04-14-
dc.identifierhttp://dx.doi.org/10.1063/1.4798937-
dc.identifier.citationJournal of Applied Physics, v. 113, n. 14, 2013.-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/11449/75110-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/75110-
dc.description.abstractIn this paper, we demonstrate that the intrinsic electric field created by a poly(o-methoxyaniline) (POMA) cushion layer hinders the changes in molecular conformation of poly(p-phenylenevinylene) (PPV) in layer-by-layer with dodecylbenzene sulfonic acid (DBS). This was modeled with density functional theory (DFT) calculations where an energy barrier hampered molecular movements of PPV segments when they were subjected to an electric field comparable to that caused by a charged POMA layer. With restricted changes in molecular conformation, the PPV film exhibited Franck-Condon transitions and the photoexcitation spectra resembled the absorption spectra, in contrast to PPV/DBS films deposited directly on glass, with no POMA cushion. Other effects from the POMA cushion were the reduced number of structural defects, confirmed with Raman spectroscopy, and an enhanced PPV emission at high temperatures (300 K) in comparison with the films on bare glass. The positive effects from the POMA cushion may be exploited for enhanced opto-electronic devices, especially as the intrinsic electric field may assist in separating photoexcited electron-hole pairs in photovoltaic devices. © 2013 American Institute of Physics.en
dc.language.isoeng-
dc.sourceScopus-
dc.subjectDensity functional theory calculations-
dc.subjectDodecylbenzene sulfonic acid-
dc.subjectFranck-Condon transitions-
dc.subjectMolecular conformation-
dc.subjectPhotoexcitation spectra-
dc.subjectPhotoexcited electron-hole pairs-
dc.subjectPoly-o-methoxyaniline-
dc.subjectPoly-p-phenylenevinylene-
dc.subjectDensity functional theory-
dc.subjectElectric fields-
dc.subjectGlass-
dc.subjectOptoelectronic devices-
dc.subjectPhotoexcitation-
dc.subjectPhotovoltaic effects-
dc.subjectRaman spectroscopy-
dc.subjectDeposition-
dc.titleStructure control of poly(p-phenylene vinylene) in layer-by-layer films by deposition on a charged poly(o-methoxyaniline) cushionen
dc.typeoutro-
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)-
dc.contributor.institutionUniversidade Federal de Mato Grosso-
dc.contributor.institutionUniversidade Federal do Piauí (UFPI)-
dc.contributor.institutionDepartamento de Física-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.description.affiliationInstituto de Física Universidade Federal de Uberlândia, CP 593, 38400-902 Uberlândia-MG-
dc.description.affiliationGrupo de Materiais Nanoestruturados Campus Universitário Do Araguaia Universidade Federal de Mato Grosso, CEP: 78698-000, Barra do Garças, Mato Grosso-
dc.description.affiliationDepartamento de Física Universidade Federal Do Piauí, 64049-690 Teresina, PI-
dc.description.affiliationCEFITEC Departamento de Física Campus de Caparica, 2829-516 Caparica-
dc.description.affiliationFaculdade de Ciências e Tecnologia Departamento de Física Química e Biologia Universidade Estadual Paulista, 19060-900 Presidente Prudente, SP-
dc.description.affiliationInstituto de Física de São Carlos Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP-
dc.description.affiliationUnespFaculdade de Ciências e Tecnologia Departamento de Física Química e Biologia Universidade Estadual Paulista, 19060-900 Presidente Prudente, SP-
dc.identifier.doi10.1063/1.4798937-
dc.identifier.wosWOS:000318250600082-
dc.rights.accessRightsAcesso restrito-
dc.identifier.file2-s2.0-84876370822.pdf-
dc.relation.ispartofJournal of Applied Physics-
dc.identifier.scopus2-s2.0-84876370822-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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