P‐214: Design of Condensed Molecular Structures for MR‐TADF with High Efficiency and Good Color Purity in Deep‐Blue Region

Recent advancements in blue OLED materials have focused on achieving both high efficiency and excellent color purity. Generally, narrow full width at half maximum is essential for excellent color purity, which can be achieved using multiresonance thermally activated delayed fluorescence (MR‐TADF) materials. Here, we report hybrid MR‐TADF materials combining boron‐based MR‐TADF known for high efficiency, and ICz‐based MR‐TADF, renowned for excellent color purity.