Thermal equilibration between singlet and triplet excited states in organic fluorophore for submicrosecond delayed fluorescence
Naoya Aizawa, Akinobu Matsumoto, Takuma Yasuda
Abstract
per second, which is considerably higher than that of radiative decay (fluorescence) from the singlet excited state. The present fluorophoric system exhibits an emission lifetime as short as 750 nanoseconds and, therefore, allows organic light-emitting diodes to demonstrate external electroluminescence quantum efficiency exceeding 20% even at a practical high luminance of more than 10,000 candelas per square meter.
Topics & Concepts
FluorophoreExcited stateFluorescenceSinglet statePhotochemistryThermalSinglet fissionOLEDMaterials sciencePhosphorescenceOptoelectronicsChemistryAtomic physicsOpticsNanotechnologyPhysicsThermodynamicsLayer (electronics)Organic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsLuminescence and Fluorescent Materials