Realizing High Efficiency and High Color Quality for All‐Fluorescence White Organic Light‐Emitting Diodes by Interlayer‐Sensitizing Configuration with Electron‐Capturing Agent

Abstract As a promising next‐generation lighting technology, all‐fluorescence white organic light‐emitting diodes (WOLEDs) have advanced rapidly but still face the formidable challenge of achieving high efficiencies and color quality simultaneously. Herein, an interlayer sensitization strategy assisted by electron‐capturing agent with thermally activated delayed fluorescence (TADF) is proposed for fabrication high‐performance WOLEDs. The proof‐of‐concept three‐color devices interlayer‐sensitizing configuration are designed, low concentration TADF codoped red conventional (CF) emitter to reduce exciton loss. major energy transfer from sensitizing layer CF combined supplementary can successfully increase utilization. synergistic effect endows WOLEDs efficiencies, quality, improved efficiency stability operational stability, resultant attain remarkable external quantum 31.0%, outstanding rendering index 93 long lifetime. record‐beating comprehensive performances these strongly demonstrate great potential exploration