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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, article no. 113107 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
2019 Impact Factor: 2.286
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. 11, article no. 113107-
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.rightsCopyright 2007 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 Journal of Applied Physics, 2007, v. 101 n. 11, article no. 113107 and may be found at https://doi.org/10.1063/1.2739220-
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.spagearticle no. 113107-
dc.identifier.epagearticle no. 113107-
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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