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Article: Improving efficiency roll-off in organic light emitting devices with a fluorescence-interlayer-phosphorescence emission architecture
Title | Improving efficiency roll-off in organic light emitting devices with a fluorescence-interlayer-phosphorescence emission architecture | ||||||||
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Authors | |||||||||
Keywords | Excitons Organic light emitting diodes Phosphorescence | ||||||||
Issue Date | 2009 | ||||||||
Publisher | American Institute of Physics. The Journal's web site is located at http://apl.aip.org/ | ||||||||
Citation | Applied Physics Letters, 2009, v. 95 n. 13, article no. 133304 How to Cite? | ||||||||
Abstract | Organic 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 Identifier | http://hdl.handle.net/10722/73904 | ||||||||
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.976 | ||||||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Zheng, T | en_HK |
dc.contributor.author | Choy, WCH | en_HK |
dc.contributor.author | Ho, CL | en_HK |
dc.contributor.author | Wong, WY | en_HK |
dc.date.accessioned | 2010-09-06T06:55:53Z | - |
dc.date.available | 2010-09-06T06:55:53Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Applied Physics Letters, 2009, v. 95 n. 13, article no. 133304 | - |
dc.identifier.issn | 0003-6951 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/73904 | - |
dc.description.abstract | Organic 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.language | eng | en_HK |
dc.publisher | American Institute of Physics. The Journal's web site is located at http://apl.aip.org/ | en_HK |
dc.relation.ispartof | Applied Physics Letters | en_HK |
dc.rights | Copyright 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 n. 13, article no. 133304 and may be found at https://doi.org/10.1063/1.3241079 | - |
dc.subject | Excitons | - |
dc.subject | Organic light emitting diodes | - |
dc.subject | Phosphorescence | - |
dc.title | Improving efficiency roll-off in organic light emitting devices with a fluorescence-interlayer-phosphorescence emission architecture | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+Architecture | en_HK |
dc.identifier.email | Choy, WCH: chchoy@eee.hku.hk | en_HK |
dc.identifier.email | Ho, CL: lamlamho@HKUCC-COM.hku.hk | en_HK |
dc.identifier.authority | Choy, WCH=rp00218 | en_HK |
dc.identifier.authority | Ho, CL=rp00704 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1063/1.3241079 | en_HK |
dc.identifier.scopus | eid_2-s2.0-70349675896 | en_HK |
dc.identifier.hkuros | 169620 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-70349675896&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 95 | en_HK |
dc.identifier.issue | 13 | en_HK |
dc.identifier.spage | article no. 133304 | - |
dc.identifier.epage | article no. 133304 | - |
dc.identifier.isi | WOS:000270458000076 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Zheng, T=26427890900 | en_HK |
dc.identifier.scopusauthorid | Choy, WCH=7006202371 | en_HK |
dc.identifier.scopusauthorid | Ho, CL=10242268200 | en_HK |
dc.identifier.scopusauthorid | Wong, WY=7403972153 | en_HK |
dc.identifier.issnl | 0003-6951 | - |