Effective bipolar hosts prepared<i>via</i>dipole moment engineering for phosphorescent emitters and white OLEDs
Qihang Zhong, Songkun Zeng, Peng Fan, Yudong Pang, Weiguo Zhu, Yafei Wang
Abstract
Two host materials o-CBPy and o-CPPy with bipolar charge transporting character were prepared via dipole moment engineering. Both blue and green phosphorescent OLEDs based on o-CBPy show very high efficiency (>30%) and small efficiency roll-off.
Topics & Concepts
OLEDDipoleMaterials sciencePhosphorescenceMoment (physics)OptoelectronicsNanotechnologyOpticsPhysicsLayer (electronics)ChemistryOrganic chemistryFluorescenceClassical mechanicsOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsOrganic Electronics and Photovoltaics