Efficient white light-emitting polymers from dual thermally activated delayed fluorescence chromophores for non-doped solution processed white electroluminescent devices
Praetip Khammultri, Wipaporn Kitisriworaphan, Pongsakorn Chasing, Supawadee Namuangruk, Taweesak Sudyoadsuk, Vinich Promarak
Abstract
Conjugated TADF copolymers comprised of two TADF molecules linked with carbazole exhibited stable pure white emission from non-doped OLEDs with CIE coordinates (0.32, 0.35), a maximum luminance efficiency of 9.13 cd A<sup>−1</sup>, and a maximum EQE of 4.17%.
Topics & Concepts
ElectroluminescenceCarbazoleChromophoreFluorescenceDopingConjugated systemWhite lightPhotochemistryMaterials scienceOLEDPolymerMoleculeQuantum efficiencyOptoelectronicsChemistryOpticsOrganic chemistryNanotechnologyPhysicsLayer (electronics)Composite materialOrganic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsLuminescence and Fluorescent Materials