Conference Paper: Optimization of organic light emitting diode structures

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TitleOptimization of organic light emitting diode structures
AuthorsChan, J1
Rakić, AD1
Kwong, CY2
Djurišić, AB2
Majewski, ML1
Chan, WK2
Chui, PC2
KeywordsDevice design
Organic light emitting diodes
Issue Date2004
PublisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml
CitationProceedings Of Spie - The International Society For Optical Engineering, 2004, v. 5277, p. 311-319 [How to Cite?]
DOI: http://dx.doi.org/10.1117/12.522861
AbstractIn this work we present detailed analysis of the emitted radiation spectrum from tris(8-hydroxyquinoline) aluminum (Alq3) based OLEDs as a function of: the choice of cathode, the thickness of organic layers, and the position of the hole transport Iayer/Alq3 interface. The calculations fully take into account dispersion in glass substrate, indium tin oxide anode, and in the organic layers, as well as the dispersion in the metal cathode. 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) was considered. As expected, 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 vicinity of the metal cathode, designs placing emissive layer near the cathode are excluded to avoid unrealistic results. Guidelines for designing devices with optimum emission efficiency are presented. Finally, the optimized devices were fabricated and characterized and experimental and calculated emission spectra were compared.
ISSN0277-786X
2011 SCImago Journal Rankings: 0.046
DOIhttp://dx.doi.org/10.1117/12.522861
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorChan, J
dc.contributor.authorRakić, AD
dc.contributor.authorKwong, CY
dc.contributor.authorDjurišić, AB
dc.contributor.authorMajewski, ML
dc.contributor.authorChan, WK
dc.contributor.authorChui, PC
dc.date.accessioned2007-10-30T06:33:05Z
dc.date.available2007-10-30T06:33:05Z
dc.date.issued2004
dc.description.abstractIn this work we present detailed analysis of the emitted radiation spectrum from tris(8-hydroxyquinoline) aluminum (Alq3) based OLEDs as a function of: the choice of cathode, the thickness of organic layers, and the position of the hole transport Iayer/Alq3 interface. The calculations fully take into account dispersion in glass substrate, indium tin oxide anode, and in the organic layers, as well as the dispersion in the metal cathode. 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) was considered. As expected, 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 vicinity of the metal cathode, designs placing emissive layer near the cathode are excluded to avoid unrealistic results. Guidelines for designing devices with optimum emission efficiency are presented. Finally, the optimized devices were fabricated and characterized and experimental and calculated emission spectra were compared.
dc.description.naturepublished_or_final_version
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dc.identifier.citationProceedings Of Spie - The International Society For Optical Engineering, 2004, v. 5277, p. 311-319 [How to Cite?]
DOI: http://dx.doi.org/10.1117/12.522861
dc.identifier.doihttp://dx.doi.org/10.1117/12.522861
dc.identifier.epage319
dc.identifier.hkuros90360
dc.identifier.issn0277-786X
2011 SCImago Journal Rankings: 0.046
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-2442580951
dc.identifier.spage311
dc.identifier.urihttp://hdl.handle.net/10722/45702
dc.identifier.volume5277
dc.languageeng
dc.publisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml
dc.publisher.placeUnited States
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering
dc.relation.referencesReferences in Scopus
dc.rightsS P I E - the International Society for Optical Proceedings. Copyright © S P I E - International Society for Optical Engineering.
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
dc.rightsCopyright 2004 Society of Photo-Optical Instrumentation Engineers. This paper was published in Photonics : design, technology, and packaging, Perth, Australia, 10-12 December 2003, v. 5277, p. 311-319 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
dc.subjectDevice design
dc.subjectOrganic light emitting diodes
dc.titleOptimization of organic light emitting diode structures
dc.typeConference_Paper
Author Affiliations
  1. University of Queensland
  2. The University of Hong Kong