Achieving phthalide-based fluorescent materials with hybridized local and charge-transfer characteristics for efficient deep blue OLEDs
Zijun Feng, Futong Liu, Zhuang Cheng, Shuyuan Ge, Yaxue Wang, Yaxue Wang, Zhenyu Yan, Xiaobo Ma, Yan Wang, Yan Wang, Ping Lü
Abstract
Three blue emitters, PPT , PPPT and PAPT with D–A/D–π–A architectures have been developed, in which phthalide was first adopted as a functional acceptor. The device based on PAPT exhibited maximum EQE of 10.2% and FWHM of 53 nm.
Topics & Concepts
PhthalideMaterials scienceOLEDFluorescenceAcceptorFull width at half maximumOptoelectronicsDeep blueCharge (physics)PhotochemistryNanotechnologyOpticsOrganic chemistryChemistryLayer (electronics)Quantum mechanicsCondensed matter physicsPhysicsOrganic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsConducting polymers and applications