Efficient non-doped blue electroluminescence based on phenanthroimidazole–benzoylfluorene hybrid molecules with high spin–orbit coupling and balanced charge mobilities

Herein, we propose a feasible design for enhancing PLQY, SOC and achieving balanced carrier mobility of the HLCT blue emitter. The non-doped OLED base on PPIFB with higher PLQY (91%), higher SOC (14.7 cm −1 ) and the balanced carrier mobilities.