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

被引：11
作者：
Chang, Y. L. [1 ]
Gong, S. [1 ]
Wang, X. [2 ]
White, R. [1 ]
Yang, C. [3 ]
Wang, S. [2 ]
Lu, Z. H. [1 ]
机构：
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
[2] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
[3] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 17期
基金：
加拿大自然科学与工程研究理事会;
关键词：
EXTERNAL QUANTUM EFFICIENCY; COMPLEXES; DEVICES; OLEDS; HOST;
D O I：
10.1063/1.4875240
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have demonstrated high-efficiency greenish-blue phosphorescent organic light-emitting diodes (PHOLEDs) based on a dimesitylboryl-functionalized C boolean AND 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. (C) 2014 AIP Publishing LLC.
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页数：4
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