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Title: Highly efficient greenish-blue platinum-based phosphorescent organic light-emitting diodes on a high triplet energy platform

We have demonstrated high-efficiency greenish-blue phosphorescent organic light-emitting diodes (PHOLEDs) based on a dimesitylboryl-functionalized C^N chelate Pt(II) phosphor, Pt(m-Bptrz)(t-Bu-pytrz-Me). Using a high triplet energy platform and optimized double emissive zone device architecture results in greenish-blue PHOLEDs that exhibit an external quantum efficiency of 24.0% and a power efficiency of 55.8 lm/W. This record high performance is comparable with that of the state-of-the-art Ir-based sky-blue organic light-emitting diodes.
Authors:
; ; ;  [1] ; ;  [2] ;  [3]
  1. Department of Materials Science and Engineering, University of Toronto, 184 College St., Toronto, Ontario M5S 3E4 (Canada)
  2. Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario K7L 3N6 (Canada)
  3. Department of Chemistry, Wuhan University, Wuhan 430072 (China)
Publication Date:
OSTI Identifier:
22280502
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 36 MATERIALS SCIENCE; LIGHT EMITTING DIODES; PHOSPHORESCENCE; PHOSPHORS; PHOTOCATHODES; PLATINUM; QUANTUM EFFICIENCY; TRIPLETS