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Conference Paper: Device optimization of tris-aluminum (Alq 3) based bilayer organic light emitting diode structures

TitleDevice optimization of tris-aluminum (Alq 3) based bilayer organic light emitting diode structures
Authors
Issue Date2006
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/sms
Citation
Smart Materials And Structures, 2006, v. 15 n. 1, p. S92-S98 How to Cite?
AbstractIn this work we present a detailed analysis of the emitted radiation spectrum from tris(8-hydroxyquinoline) aluminum (Alq 3) based bilayer organic light emitting diodes (OLEDs) as a function of the choice of cathode, the thickness of the organic layers, and the position of the hole transport layer/Alq 3 interface. The calculations fully take into account dispersion in the glass substrate, the indium tin oxide anode, and in the organic layers, as well as the dispersion in the metal cathode. The influence of the incoherent transparent substrate (1 mm glass substrate) is also fully accounted for. Four cathode structures have been considered: Mg/Ag, Ca/Ag, LiF/Al, and Ag. For the hole transport layer, N,N′-diphenyl-N,N′-(3- methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD) and N,N ′-di(naphthalene-1-yl)-N,N ′-diphenylbenzidine (NPB) were considered. As expected, the emitted radiation is strongly dependent on the position of the emissive layer inside the cavity and its distance from the metal cathode. Although our optical model for an OLED does not explicitly include exciton quenching in the vicinity of the metal cathode, designs placing the emissive layer near the cathode are excluded to avoid unrealistic results. Guidelines for designing devices with optimum emission efficiency are presented. Finally, several different devices were fabricated and characterized and experimental and calculated emission spectra were compared. © 2006 IOP Publishing Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/69085
ISSN
2014 Impact Factor: 2.502
2014 SCImago Journal Rankings: 1.187
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, Jen_HK
dc.contributor.authorRakić, ADen_HK
dc.contributor.authorKwong, CYen_HK
dc.contributor.authorLiu, ZTen_HK
dc.contributor.authorDjurišić, ABen_HK
dc.contributor.authorMajewski, MLen_HK
dc.contributor.authorChan, WKen_HK
dc.contributor.authorChui, PCen_HK
dc.date.accessioned2010-09-06T06:10:25Z-
dc.date.available2010-09-06T06:10:25Z-
dc.date.issued2006en_HK
dc.identifier.citationSmart Materials And Structures, 2006, v. 15 n. 1, p. S92-S98en_HK
dc.identifier.issn0964-1726en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69085-
dc.description.abstractIn this work we present a detailed analysis of the emitted radiation spectrum from tris(8-hydroxyquinoline) aluminum (Alq 3) based bilayer organic light emitting diodes (OLEDs) as a function of the choice of cathode, the thickness of the organic layers, and the position of the hole transport layer/Alq 3 interface. The calculations fully take into account dispersion in the glass substrate, the indium tin oxide anode, and in the organic layers, as well as the dispersion in the metal cathode. The influence of the incoherent transparent substrate (1 mm glass substrate) is also fully accounted for. Four cathode structures have been considered: Mg/Ag, Ca/Ag, LiF/Al, and Ag. For the hole transport layer, N,N′-diphenyl-N,N′-(3- methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD) and N,N ′-di(naphthalene-1-yl)-N,N ′-diphenylbenzidine (NPB) were considered. As expected, the emitted radiation is strongly dependent on the position of the emissive layer inside the cavity and its distance from the metal cathode. Although our optical model for an OLED does not explicitly include exciton quenching in the vicinity of the metal cathode, designs placing the emissive layer near the cathode are excluded to avoid unrealistic results. Guidelines for designing devices with optimum emission efficiency are presented. Finally, several different devices were fabricated and characterized and experimental and calculated emission spectra were compared. © 2006 IOP Publishing Ltd.en_HK
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/smsen_HK
dc.relation.ispartofSmart Materials and Structuresen_HK
dc.titleDevice optimization of tris-aluminum (Alq 3) based bilayer organic light emitting diode structuresen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0964-1726&volume=15&spage=S92&epage=S98&date=2006&atitle=Device+optimization+of+tris-aluminum+(Alq3)+based+bilayer+organic+light+emitting+diode+structuresen_HK
dc.identifier.emailDjurišić, AB: dalek@hku.hken_HK
dc.identifier.emailChan, WK: waichan@hku.hken_HK
dc.identifier.emailChui, PC: pcchui@hkucc.hku.hken_HK
dc.identifier.authorityDjurišić, AB=rp00690en_HK
dc.identifier.authorityChan, WK=rp00667en_HK
dc.identifier.authorityChui, PC=rp00114en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0964-1726/15/1/015en_HK
dc.identifier.scopuseid_2-s2.0-31144447680en_HK
dc.identifier.hkuros112513en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-31144447680&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue1en_HK
dc.identifier.spageS92en_HK
dc.identifier.epageS98en_HK
dc.identifier.isiWOS:000235313500016-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChan, J=9234340000en_HK
dc.identifier.scopusauthoridRakić, AD=35618124100en_HK
dc.identifier.scopusauthoridKwong, CY=35917741900en_HK
dc.identifier.scopusauthoridLiu, ZT=22934686400en_HK
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_HK
dc.identifier.scopusauthoridMajewski, ML=7103350030en_HK
dc.identifier.scopusauthoridChan, WK=13310083000en_HK
dc.identifier.scopusauthoridChui, PC=13309913400en_HK

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