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Article: Comprehensive analysis and optimal design of top-emitting organic light-emitting devices

TitleComprehensive analysis and optimal design of top-emitting organic light-emitting devices
Authors
KeywordsPhysics engineering
Issue Date2007
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2007, v. 101 n. 11 How to Cite?
AbstractWe present an accurate analysis of light emission in top-emitting organic light-emitting devices (TOLEDs) by explicitly considering the Purcell effect. TOLEDs are optimized separately for maximum zero-degree luminance, maximum electroluminescence (EL) efficiency, and wide viewing angle with high EL efficiency. For fluorescent material with an internal quantum efficiency ( int 0) of 0.25, the maximum zero-degree luminance and EL efficiency can be achieved by locating the emitters around the first antinode of the microcavity while for phosphorescent material with int 0 =1.0, the maximum zero-degree luminance and EL efficiency are around the second antinode. Through relaxing the efficiency by 10%-20%, the angular intensity distribution can be even better than the Lambertian distribution; meanwhile, the color shows only a small variation over an angle range of 150°. Our results, which are in good agreement with experiments, show that the Purcell effect on TOLED performances is significant and should be carefully examined in studying TOLEDs. © 2007 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/57452
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, XWen_HK
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorHe, Sen_HK
dc.contributor.authorChui, PCen_HK
dc.date.accessioned2010-04-12T01:37:09Z-
dc.date.available2010-04-12T01:37:09Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of Applied Physics, 2007, v. 101 n. 11en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57452-
dc.description.abstractWe present an accurate analysis of light emission in top-emitting organic light-emitting devices (TOLEDs) by explicitly considering the Purcell effect. TOLEDs are optimized separately for maximum zero-degree luminance, maximum electroluminescence (EL) efficiency, and wide viewing angle with high EL efficiency. For fluorescent material with an internal quantum efficiency ( int 0) of 0.25, the maximum zero-degree luminance and EL efficiency can be achieved by locating the emitters around the first antinode of the microcavity while for phosphorescent material with int 0 =1.0, the maximum zero-degree luminance and EL efficiency are around the second antinode. Through relaxing the efficiency by 10%-20%, the angular intensity distribution can be even better than the Lambertian distribution; meanwhile, the color shows only a small variation over an angle range of 150°. Our results, which are in good agreement with experiments, show that the Purcell effect on TOLED performances is significant and should be carefully examined in studying TOLEDs. © 2007 American Institute of Physics.en_HK
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsJournal of Applied Physics. Copyright © American Institute of Physics.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics engineeringen_HK
dc.titleComprehensive analysis and optimal design of top-emitting organic light-emitting devicesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=101&issue=11&spage=113107&epage=1 &date=2007&atitle=Comprehensive+analysis+and+optimal+design+of+top-emitting+organic+light+emitting+devicesen_HK
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_HK
dc.identifier.emailChui, PC:pcchui@eee.hku.hken_HK
dc.identifier.authorityChoy, WCH=rp00218en_HK
dc.identifier.authorityChui, PC=rp00114en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.2739220en_HK
dc.identifier.scopuseid_2-s2.0-34250618391en_HK
dc.identifier.hkuros131021-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34250618391&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume101en_HK
dc.identifier.issue11en_HK
dc.identifier.isiWOS:000247306000007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, XW=10139115100en_HK
dc.identifier.scopusauthoridChoy, WCH=7006202371en_HK
dc.identifier.scopusauthoridHe, S=36048024500en_HK
dc.identifier.scopusauthoridChui, PC=13309913400en_HK

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