Modeling of organic light-emitting diodes with graded concentration in the emissive multilayer

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dc.contributor.authorGusso, A.
dc.contributor.authorMa, D. G.
dc.contributor.authorHummelgen, I. A.
dc.contributor.authorda Luz, MGE
dc.contributor.institutionUniversidade Federal do Paraná (UFPR)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionChinese Acad Sci
dc.date.accessioned2014-05-20T14:06:39Z
dc.date.available2014-05-20T14:06:39Z
dc.date.issued2004-02-15
dc.description.abstractWe model the electrical behavior of organic light-emitting diodes whose emissive multilayer is formed by blends of an electron transporting material, tris-(8-hydroxyquinoline) aluminum (Alq(3)) and a hole transporting material, N,N-'-diphenyl-N,N-'-bis(1,1(')-biphenyl)-4,4-diamine. The multilayer is composed of layers of different concentration. The Alq(3) concentration gradually decreases from the cathode to the anode. We demonstrate that these graded devices have higher efficiency and operate at lower applied voltages than devices whose emissive layer is made of nominally homogeneous blends. Our results show an important advantage of graded devices, namely, the low values of the recombination rate distribution near the cathode and the anode, so that electrode quenching is expected to be significantly suppressed in these devices. (C) 2004 American Institute of Physics.en
dc.description.affiliationUniversidade Federal do Paraná (UFPF), Dept Fis, BR-81531990 Curitiba, Parana, Brazil
dc.description.affiliationUNESP, IFT, BR-01405990 São Paulo, Brazil
dc.description.affiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
dc.description.affiliationUnespUNESP, IFT, BR-01405990 São Paulo, Brazil
dc.format.extent2056-2062
dc.identifierhttp://dx.doi.org/10.1063/1.1640457
dc.identifier.citationJournal of Applied Physics. Melville: Amer Inst Physics, v. 95, n. 4, p. 2056-2062, 2004.
dc.identifier.doi10.1063/1.1640457
dc.identifier.fileWOS000188654100068.pdf
dc.identifier.issn0021-8979
dc.identifier.urihttp://hdl.handle.net/11449/23396
dc.identifier.wosWOS:000188654100068
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofJournal of Applied Physics
dc.relation.ispartofjcr2.176
dc.relation.ispartofsjr0,739
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleModeling of organic light-emitting diodes with graded concentration in the emissive multilayeren
dc.typeArtigo
dcterms.licensehttp://publishing.aip.org/authors/web-posting-guidelines
dcterms.rightsHolderAmer Inst Physics
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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