High‐Efficiency Circularly Polarized White Electroluminescence From Complementary Planar Chiral TADF Enantiomers Based on [2.2]Paracyclophane Scaffolds

ABSTRACT Circularly polarized white organic light‐emitting diodes (CP‐WOLEDs) hold great promise for next‐generation 3D displays and lighting technologies, yet achieving high efficiency remains a formidable challenge. In this work, we report the design and synthesis of four pairs of planar chiral [2.2]paracyclophane‐based thermally activated delayed fluorescence (TADF) emitters with complementary emission colors. Through solution‐processed co‐doping of these chiral TADF materials, we successfully demonstrate CP‐WOLEDs exhibiting a stable white emission with CIE coordinates of (0.32, 0.37), a stable electroluminescence dissymmetry factor | g EL | of ∼10 −3 , and a high maximum external quantum efficiency of up to 10.7%. This work represents the first realization of white circularly polarized electroluminescence using planar chiral TADF systems, offering a novel and efficient strategy toward high‐performance CP‐WOLEDs for future advanced optoelectronic applications.