Published in
Royal Society of Chemistry, Journal of Materials Chemistry C Materials for optical and electronic devices, 35(3), p. 9053-9056, 2015
DOI: 10.1039/c5tc01828e
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The study on two kinds of spiro systems for improving the performance of host materials in blue phosphorescent organic light-emitting diodes
,
Qian Li,
Lin-Song Cui ,
Zuo-Quan Jiang ,
Hua Chen,
Liang-Sheng Liao
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Abstract
The introduction of spiro-acridine-fluorene (SAF) can affect the electronic structure of the whole molecule, which made SAF-based material exhibit totally different photophysical properties from conventional spironbifluorene-based material. With these properties, nearly 25% external quantum efficiency in sky-blue phosphorescent organic light-emitting diodes was achieved.