Novel electro-fluorescent materials with hybridized local and charge-transfer (HLCT) excited state for highly efficient non-doped pure blue OLEDs
Mizhen Sun, Mingming Zhang, Yannan Zhou, Mingliang Xie, Lizhi Chu, Xin Wang, Qikun Sun, Fengjia Liu, Wenjun Yang, Shanfeng Xue
Abstract
Two molecules with HLCT characteristics were synthesized through fine-tuning the substituent on PPI based on the PPI–TAZ skeleton, and the non-doped device based on PPITZCN achieved higher efficiency with an EQE max of 7.5% and CIE of (0.16, 0.10).
Topics & Concepts
ChemistryOLEDFluorescenceSubstituentDopingExcited stateMoleculeOptoelectronicsPhotochemistryAtomic physicsStereochemistryOpticsOrganic chemistryMaterials scienceLayer (electronics)PhysicsOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsConducting polymers and applications