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Towards Highly Efficient Blue‐Phosphorescent Organic Light‐Emitting Diodes with Low Operating Voltage and Excellent Efficiency Stability
Author(s) -
Han Chunmiao,
Xie Guohua,
Xu Hui,
Zhang Zhensong,
Yu Donghui,
Zhao Yi,
Yan Pengfei,
Deng Zhaopeng,
Li Qiang,
Liu Shiyong
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201001981
Subject(s) - dibenzofuran , phosphorescence , phosphine oxide , chromophore , moiety , diode , oled , optoelectronics , oxide , computer science , materials science , chemistry , phosphine , nanotechnology , fluorescence , photochemistry , optics , physics , stereochemistry , organic chemistry , layer (electronics) , metallurgy , catalysis
Let there be light! An effective strategy for the design of highly efficient phosphine oxide light‐emitting‐diode hosts with an ortho ‐linked structure has been demonstrated by synthesizing 4‐diphenylphosphoryl dibenzofuran. The ortho linkage of the phosphine oxide moiety has the dual effect of retaining high T 1 levels and efficiently polarising chromophores (see graphic).