Effect of ion concentration of ionomer in electron injection layer of polymer light-emitting devices

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dc.contributor.authorOlivati, C. A.
dc.contributor.authorCarvalho, A. J. F.
dc.contributor.authorBalogh, D. T.
dc.contributor.authorvon Seggern, H.
dc.contributor.authorFaria, R. M.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionTH Darmstadt
dc.date.accessioned2014-05-20T13:22:56Z
dc.date.available2014-05-20T13:22:56Z
dc.date.issued2006-06-15
dc.description.abstractPolymer light-emitting devices (PLEDs) with poly(2-methoxy-5-hexyloxy)-p-phenylenevinylene (OC1OC6-PPV) as the emissive layer were studied with an electron injection layer of ionomers consisting of copolymers of styrene and methylmethacrylate (PS/PMMA) with 3, 6 and 8 mol% degree of sulfonation. The ionomers were able to form very thin films over the emissive layer, with less than 30 nm. Additionally, the presence of ion pairs of ionomer suppresses the tendency toward dewetting of the thin film of ionomer (similar to 10 nm) which can cause malfunction of the device. The effect of the ionomers was investigated as a function of the ion content. The devices performance, characterized by their current density and luminance intensity versus voltage, showed a remarkable increase with the ionomer layer up to 6 mol% of ionic groups, decreasing after that for the 8 mol% ionomer device. The study of the impedance spectroscopy in the frequency range from 0.1 to 10(6) Hz showed that the injection phenomena dominate over the transport in the electroluminescent polymer bulk. (c) 2006 Elsevier B.V. All rights reserved.en
dc.description.affiliationUSP, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciências & Tecnol, Dpto Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationTH Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciências & Tecnol, Dpto Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent1686-1690
dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2006.01.064
dc.identifier.citationJournal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 352, n. 9-20, p. 1686-1690, 2006.
dc.identifier.doi10.1016/j.jnoncrysol.2006.01.064
dc.identifier.issn0022-3093
dc.identifier.lattes9822212808651415
dc.identifier.orcid0000-0002-0114-6795
dc.identifier.urihttp://hdl.handle.net/11449/6823
dc.identifier.wosWOS:000238782900197
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Non-Crystalline Solids
dc.relation.ispartofjcr2.488
dc.relation.ispartofsjr0,722
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectconductivitypt
dc.subjectelectroluminescencept
dc.subjectpolymer and organicspt
dc.titleEffect of ion concentration of ionomer in electron injection layer of polymer light-emitting devicesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes9822212808651415[1]
unesp.author.orcid0000-0001-8403-1135[2]
unesp.author.orcid0000-0002-0114-6795[1]
unesp.author.orcid0000-0002-9196-3982[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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