Influence of cavity Q-factor on near-infrared emitting microcavity organic light emitting diodes

C. H. Cheung*, A. B. Djurišić, C. Y. Kwong, Hoi Lam TAM, Kok Wai CHEAH, Z. T. Liu, W. K. Chan, P. C. Chu

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review


In this work, we fabricated near-infrared emitting MOLEDs with two organic layers. The hole transporting layer was N, N' - di(naphthalene-1-yl) - N,N'- diphenylbenzidine (NPB), while tris(8-hydroxyquinoline) aluminum (Alq) was the emissive and electron transporting layer. The bilayer structure was sandwiched between two silver mirrors. In order to investigate the influence of cavity Q-factor to the emission spectra, devices with different thickness of bottom mirror (anode) were fabricated. The influence of the choice of the bottom mirror (anode) was also investigated, and the devices with copper anode were also fabricated. The devices were characterized by angular dependent electroluminescence, photoluminescence, and transmittance measurements. Possible origins of the observed phenomena are discussed.

Original languageEnglish
Title of host publicationOrganic Thin-Film Electronics
PublisherMaterials Research Society
Number of pages6
ISBN (Print)155899825X, 9781558998254
Publication statusPublished - 2005
Event2005 MRS Spring Meeting - San Francisco, CA, United States
Duration: 28 Mar 20051 Apr 2005

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2005 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA

Scopus Subject Areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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