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Conference Paper: Device optimization of tris-aluminum (Alq 3) based bilayer organic light emitting diode structures
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TitleDevice optimization of tris-aluminum (Alq 3) based bilayer organic light emitting diode structures
 
AuthorsChan, J1
Rakić, AD1
Kwong, CY2
Liu, ZT2
Djurišić, AB2
Majewski, ML1
Chan, WK2
Chui, PC2
 
Issue Date2006
 
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/sms
 
CitationSmart Materials And Structures, 2006, v. 15 n. 1, p. S92-S98 [How to Cite?]
DOI: http://dx.doi.org/10.1088/0964-1726/15/1/015
 
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.
 
ISSN0964-1726
2013 Impact Factor: 2.449
 
DOIhttp://dx.doi.org/10.1088/0964-1726/15/1/015
 
ISI Accession Number IDWOS:000235313500016
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorChan, J
 
dc.contributor.authorRakić, AD
 
dc.contributor.authorKwong, CY
 
dc.contributor.authorLiu, ZT
 
dc.contributor.authorDjurišić, AB
 
dc.contributor.authorMajewski, ML
 
dc.contributor.authorChan, WK
 
dc.contributor.authorChui, PC
 
dc.date.accessioned2010-09-06T06:10:25Z
 
dc.date.available2010-09-06T06:10:25Z
 
dc.date.issued2006
 
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.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationSmart Materials And Structures, 2006, v. 15 n. 1, p. S92-S98 [How to Cite?]
DOI: http://dx.doi.org/10.1088/0964-1726/15/1/015
 
dc.identifier.doihttp://dx.doi.org/10.1088/0964-1726/15/1/015
 
dc.identifier.epageS98
 
dc.identifier.hkuros112513
 
dc.identifier.isiWOS:000235313500016
 
dc.identifier.issn0964-1726
2013 Impact Factor: 2.449
 
dc.identifier.issue1
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-31144447680
 
dc.identifier.spageS92
 
dc.identifier.urihttp://hdl.handle.net/10722/69085
 
dc.identifier.volume15
 
dc.languageeng
 
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/sms
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofSmart Materials and Structures
 
dc.relation.referencesReferences in Scopus
 
dc.titleDevice optimization of tris-aluminum (Alq 3) based bilayer organic light emitting diode structures
 
dc.typeConference_Paper
 
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<description.abstract>In 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&#8242;-diphenyl-N,N&#8242;-(3- methylphenyl)-1,1&#8242;-biphenyl-4,4&#8242;-diamine (TPD) and N,N &#8242;-di(naphthalene-1-yl)-N,N &#8242;-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. &#169; 2006 IOP Publishing Ltd.</description.abstract>
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Author Affiliations
  1. University of Queensland
  2. The University of Hong Kong