Influence of molecular structure on the properties of dendrimer light-emitting diodes

TD Anthopoulos, JPJ Markham, EB Namdas, JR Lawrence, Ifor David William Samuel, SC Lo, PL Burn

Research output: Other contribution

45 Citations (Scopus)

Abstract

Iridium-based phosphorescent dendrimers have shown much promise as highly efficient light emitting materials for organic light emitting diodes (OLEDs). Here we report the effects of modifying the chemical structure on the emissive and charge transport properties of Ir(ppy)3 based electrophosphorescent dendrimers. We investigate a novel para linked first generation (G1) iridium dendrimer. This material is compared to G1 and G2 meta linked dendrimers. We show that by blending these dendrimers into a CBP host, high external quantum efficiencies of over 10% and luminous efficiencies of 27 1m/W can be achieved. (C) 2003 Elsevier B.V. All rights reserved.

Original languageEnglish
Volume4
DOIs
Publication statusPublished - Sept 2003

Keywords

  • ELECTROLUMINESCENT DIODES
  • CONJUGATED DENDRIMERS
  • EFFICIENCY
  • DEVICES
  • PHOSPHORESCENCE
  • PERFORMANCE
  • GENERATION
  • IRIDIUM
  • LAYER

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