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Article: A possible mechanism to tune magneto-electroluminescence in organic light-emitting diodes through adjusting the triplet exciton density

TitleA possible mechanism to tune magneto-electroluminescence in organic light-emitting diodes through adjusting the triplet exciton density
Authors
KeywordsContributing factor
Emission layers
Exciton formation
High field
Hole transport materials
Issue Date2011
PublisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2011, v. 99 n. 14, article no. 143305 How to Cite?
AbstractAt 15 K, the high field decay of magneto-electroluminescence (MEL) in tris (8-hydroxyquinoine) aluminum (Alq 3)-based organic light-emitting diodes is greatly suppressed by mixing hole transport material N,N′-bis(naphthalen-1-y)-N,N′-bis(phenyl) benzidine (NPB) into Alq 3 emission layer. The positive correlation between the MEL decay and the triplet exciton density indicates the reduced triplet exciton density is the major contributing factor. The change of triplet exciton density and then the MEL upon NPB mixing may result from the strengths change of charge-triplets interaction, in which the injected charges flowing through the exciton formation zone without forming static space charges play the most important role. © 2011 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/155674
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Pen_US
dc.contributor.authorSong, QLen_US
dc.contributor.authorChoy, WCHen_US
dc.contributor.authorDing, BFen_US
dc.contributor.authorLiu, YLen_US
dc.contributor.authorXiong, ZHen_US
dc.date.accessioned2012-08-08T08:34:46Z-
dc.date.available2012-08-08T08:34:46Z-
dc.date.issued2011en_US
dc.identifier.citationApplied Physics Letters, 2011, v. 99 n. 14, article no. 143305en_US
dc.identifier.issn0003-6951en_US
dc.identifier.urihttp://hdl.handle.net/10722/155674-
dc.description.abstractAt 15 K, the high field decay of magneto-electroluminescence (MEL) in tris (8-hydroxyquinoine) aluminum (Alq 3)-based organic light-emitting diodes is greatly suppressed by mixing hole transport material N,N′-bis(naphthalen-1-y)-N,N′-bis(phenyl) benzidine (NPB) into Alq 3 emission layer. The positive correlation between the MEL decay and the triplet exciton density indicates the reduced triplet exciton density is the major contributing factor. The change of triplet exciton density and then the MEL upon NPB mixing may result from the strengths change of charge-triplets interaction, in which the injected charges flowing through the exciton formation zone without forming static space charges play the most important role. © 2011 American Institute of Physics.en_US
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/en_US
dc.relation.ispartofApplied Physics Lettersen_US
dc.rightsApplied Physics Letters. Copyright © American Institute of Physics.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectContributing factor-
dc.subjectEmission layers-
dc.subjectExciton formation-
dc.subjectHigh field-
dc.subjectHole transport materials-
dc.titleA possible mechanism to tune magneto-electroluminescence in organic light-emitting diodes through adjusting the triplet exciton densityen_US
dc.typeArticleen_US
dc.identifier.emailChen, P: chenping@eee.hku.hken_US
dc.identifier.emailChoy, WCH: chchoy@eee.hku.hk-
dc.identifier.emailDing, BF: bfding@hku.hk-
dc.identifier.authorityChoy, WCH=rp00218en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1063/1.3644147en_US
dc.identifier.scopuseid_2-s2.0-80053996239en_US
dc.identifier.hkuros208047-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053996239&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume99en_US
dc.identifier.issue14, article no. 143305en_US
dc.identifier.isiWOS:000295625100094-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridXiong, ZH=45961559500en_US
dc.identifier.scopusauthoridLiu, YL=53881736100en_US
dc.identifier.scopusauthoridDing, BF=16309026400en_US
dc.identifier.scopusauthoridChoy, WCH=7006202371en_US
dc.identifier.scopusauthoridSong, QL=9333839600en_US
dc.identifier.scopusauthoridChen, P=26648078100en_US

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