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Article: Improving efficiency roll-off in organic light emitting devices with a fluorescence-interlayer-phosphorescence emission architecture

TitleImproving efficiency roll-off in organic light emitting devices with a fluorescence-interlayer-phosphorescence emission architecture
Authors
KeywordsExcitons
Organic light emitting diodes
Phosphorescence
Issue Date2009
PublisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2009, v. 95 n. 13 How to Cite?
AbstractOrganic light emitting devices (OLEDs) with a fluorescence-interlayer- phosphorescence emission layer structure (FIP EML) has been proposed to solve the efficiency roll-off issue effectively. Efficient green OLED based on FIP EML exhibiting only 26% roll-off in the luminance efficiency, which is lower than the typical roll-off of 51% for conventional phosphorescent OLEDs with single EML operated at 5-150 mA/cm2 range, has been demonstrated. Such enhancement should be attributed to the improved carrier balance, the exciton redistribution in recombination zone, the suppression of nonradiative exciton quenching processes, and the elimination of energy transfer loss offered by the FIP EML structure. © 2009 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/73904
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the HK Special Administrative Region, ChinaHKU 712108
Hong Kong Research Grants Council
Hong Kong Baptist UniversityFRG2/08-09/111
Funding Information:

This work is supported under Grant No. HKU 712108 from the Research Grants Council of the HK Special Administrative Region, China. W.-Y. W. thanks the Hong Kong Research Grants Council (Grant No. HKBU 202106) and the Hong Kong Baptist University (Grant No. FRG2/08-09/111) for financial support. We would like to thank Xiaoming He for the measurements of photophysical properties of organic semiconductors.

References

 

DC FieldValueLanguage
dc.contributor.authorZheng, Ten_HK
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorHo, CLen_HK
dc.contributor.authorWong, WYen_HK
dc.date.accessioned2010-09-06T06:55:53Z-
dc.date.available2010-09-06T06:55:53Z-
dc.date.issued2009en_HK
dc.identifier.citationApplied Physics Letters, 2009, v. 95 n. 13en_HK
dc.identifier.issn0003-6951en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73904-
dc.description.abstractOrganic light emitting devices (OLEDs) with a fluorescence-interlayer- phosphorescence emission layer structure (FIP EML) has been proposed to solve the efficiency roll-off issue effectively. Efficient green OLED based on FIP EML exhibiting only 26% roll-off in the luminance efficiency, which is lower than the typical roll-off of 51% for conventional phosphorescent OLEDs with single EML operated at 5-150 mA/cm2 range, has been demonstrated. Such enhancement should be attributed to the improved carrier balance, the exciton redistribution in recombination zone, the suppression of nonradiative exciton quenching processes, and the elimination of energy transfer loss offered by the FIP EML structure. © 2009 American Institute of Physics.en_HK
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/en_HK
dc.relation.ispartofApplied Physics Lettersen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsApplied Physics Letters. Copyright © American Institute of Physics.en_HK
dc.rightsCopyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters, 2009, v. 95, article no. 133304 and may be found at http://link.aip.org/link/doi/10.1063/1.3241079-
dc.subjectExcitons-
dc.subjectOrganic light emitting diodes-
dc.subjectPhosphorescence-
dc.titleImproving efficiency roll-off in organic light emitting devices with a fluorescence-interlayer-phosphorescence emission architectureen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-6951&volume=95&issue=13, article no. 133304&spage=&epage=&date=2009&atitle=Improving+Efficiency+Roll-off+in+Organic+Light+Emitting+Devices+with+a+Fluorescence-Interlayer-Phosphorescence+Emission+Architectureen_HK
dc.identifier.emailChoy, WCH: chchoy@eee.hku.hken_HK
dc.identifier.emailHo, CL: lamlamho@HKUCC-COM.hku.hken_HK
dc.identifier.authorityChoy, WCH=rp00218en_HK
dc.identifier.authorityHo, CL=rp00704en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.3241079en_HK
dc.identifier.scopuseid_2-s2.0-70349675896en_HK
dc.identifier.hkuros169620en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349675896&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume95en_HK
dc.identifier.issue13en_HK
dc.identifier.isiWOS:000270458000076-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZheng, T=26427890900en_HK
dc.identifier.scopusauthoridChoy, WCH=7006202371en_HK
dc.identifier.scopusauthoridHo, CL=10242268200en_HK
dc.identifier.scopusauthoridWong, WY=7403972153en_HK

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