Light out-coupling efficiencies of organic light-emitting diode structures and the effect of photoluminescence quantum yield

L H Smith, J A E Wasey, I D W Samuel, W L Barnes

Research output: Contribution to journalArticlepeer-review

116 Citations (Scopus)

Abstract

Results obtained from modeling the light out-coupling efficiency of an organic light-emitting diode (OLED) structure containing the recently developed first-generation fac-tris(2-phenylpyridine) iridium-cored dendrimer (Ir-G1) as the emissive organic layer are reported. Comparison of the results obtained for this material with those of corresponding structures based upon small-molecule and polymer emissive materials is made. The calculations of out-coupling efficiency performed here take account of many factors, including the photoluminescence quantum yield (PLQY) of the emissive materials. Further, how each material system might perform with regard to out-coupling efficiency when a range of possible PLQYs are considered is shown. The calculations show that the very high efficiency of dendrimer-based OLEDs can be attributed primarily to their high PLQY.

Original languageEnglish
Pages (from-to)1839-1844
Number of pages6
JournalAdvanced Functional Materials
Volume15
DOIs
Publication statusPublished - Nov 2005

Keywords

  • CONJUGATED POLYMERS
  • ELECTROLUMINESCENT DIODES
  • DENDRITIC MACROMOLECULES
  • THIN-FILMS
  • SURFACE
  • DEVICES
  • SCATTERING
  • MOLECULES
  • LAYER

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