Highly efficient green‐emissive organic light emitting diodes based on multiple‐resonance boron‐nitrogen materials

Abstract Green‐emission phosphor‐sensitized OLEDs were demonstrated to achieve extremely high performance. SY‐FGD8‐based sensitized top‐emission devices achieved current efficiency of 232.8 cd/A@10 mA/cm 2 , LT95@50 mA/cm 2 , room temperature of 71 h and LT80@20 mA/cm 2 , 85°C of 187 h, which are greatly improved by 28%, 29%, and 65%, respectively, compared to phosphorescent devices. Notably, SY‐FGD8 exhibited excellent compatibility with different host and phosphorescent sensitizers.