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Controllably Tuning Excited‐State Energy in Ternary Hosts for Ultralow‐Voltage‐Driven Blue Electrophosphorescence
Author(s) -
Han Chunmiao,
Zhang Zhensong,
Xu Hui,
Li Jing,
Xie Guohua,
Chen Runfeng,
Zhao Yi,
Huang Wei
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201202702
Subject(s) - ternary operation , dibenzofuran , optoelectronics , materials science , diode , blue light , voltage , excited state , chemistry , electrical engineering , computer science , physics , atomic physics , engineering , organic chemistry , programming language
A series of dibenzofuran‐based ternary hosts were designed and prepared. The singlet energy levels and carrier injecting/transporting abilities were adjusted on the basis of the mixed meso and short‐axis linkages (see picture). By harmonizing the optical and electrical properties, the blue‐emitting diodes realized highly efficient blue electrophosphorescence with ultralow driving voltages.