Novel carbazole-based multifunctional materials with a hybridized local and charge-transfer excited state acting as deep-blue emitters and phosphorescent hosts for highly efficient organic light-emitting diodes
Haitao Zhou, Mengna Yin, Zhenhong Zhao, Yanqin Miao, Xin Jin, Jinhai Huang, Zhixiang Gao, Hua Wang, Jianhua Su, He Tian
Abstract
Two novel multifunctional HLCT materials, namely <bold>OCI</bold> and <bold>OCT</bold>, were presented and they proved to be better green hosts than CBP. Acting as a deep-blue emitter, the <bold>OCI</bold>-based device achieved an EQE of 5.06% and CIE<sub>y</sub> < 0.04 with an EL peak at 424 nm.
Topics & Concepts
PhosphorescenceMaterials scienceCommon emitterOptoelectronicsOLEDCarbazoleExcited stateDiodeCharge (physics)Deep blueNanotechnologyPhotochemistryOpticsFluorescenceAtomic physicsPhysicsChemistryQuantum mechanicsLayer (electronics)Organic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsConducting polymers and applications