On the triplet distribution and its effect on an improved phosphorescent organic light-emitting diode

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage93301-4en_US
dc.citation.issueNumber9en_US
dc.citation.spage93301-1en_US
dc.citation.volumeNumber101en_US
dc.contributor.authorLiu, S. W.en_US
dc.contributor.authorDivayana, Y.en_US
dc.contributor.authorAbiyasa, A. P.en_US
dc.contributor.authorTan S.T.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.contributor.authorSun, X. W.en_US
dc.date.accessioned2015-07-28T12:05:03Z
dc.date.available2015-07-28T12:05:03Z
dc.date.issued2012-08-28en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractWe reported phosphorescent organic light-emitting diodes with internal quantum efficiency near 100% with significantly reduced efficiency roll-off. It was found that the use of different hole transporting layer (HTL) affects the exciton distribution in the emission region significantly. Our best device reaches external quantum efficiency (EQE), current, and power efficiency of 22.8% +/- 0.1%, 78.6 +/- 0.2 cd/A, 85 +/- 2 lm/W, respectively, with half current of 158.2 mA/cm(2). This considerably outperforms the control device with N,N'-bis(naphthalen-1-yl)-N,N'-bis(phenyl)-benzidine (NPB) (HTL) and 4,4'-N,N'-dicarbazole-biphenyl (host) with maximum EQE, current and power efficiency of 19.1% +/- 0.1%, 65.6 +/- 0.3 cd/A, 67 +/- 2 lm/W, respectively, with half current of only 8.1 mA/cm(2).en_US
dc.identifier.doi10.1063/1.4749278en_US
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/11693/13194
dc.language.isoEnglishen_US
dc.publisherAIP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.4749278en_US
dc.source.titleApplied Physics Lettersen_US
dc.subjectTransient analysisen_US
dc.subjectDevicesen_US
dc.subjectElectrophosphorescenceen_US
dc.subjectEfficiencyen_US
dc.subjectInterlayeren_US
dc.subjectGreenen_US
dc.titleOn the triplet distribution and its effect on an improved phosphorescent organic light-emitting diodeen_US
dc.typeArticleen_US
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