Deep-blue high-efficiency triplet–triplet annihilation organic light-emitting diodes using hydroxyl-substituted tetraphenylimidazole-functionalized anthracene fluorescent emitters
Wan Li, Pongsakorn Chasing, Phattananawee Nalaoh, Thanyarat Chawanpunyawat, Nuttapong Chantanop, Chattarika Sukpattanacharoen, Nawee Kungwan, Praweena Wongkaew, Taweesak Sudyoadsuk, Vinich Promarak
Abstract
A new triplet–triplet annihilation-OLED exhibits deep-blue electroluminescence (CIE y ≈ 0.08) with a narrow full width at half maximum of 59 nm, high external quantum efficiency of 6.43%, low turn-on voltage, and singlet exciton utilization of 38%.
Topics & Concepts
OLEDAnthraceneAnnihilationMaterials scienceElectroluminescenceFluorescencePhotochemistryOptoelectronicsSinglet stateQuantum efficiencyExcitonDiodePhosphorescent organic light-emitting diodeOpticsAtomic physicsChemistryExcited stateNanotechnologyPhysicsCondensed matter physicsNuclear physicsLayer (electronics)Organic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsOrganic Electronics and Photovoltaics