Multifunctional Hot‐Exciton Fluorophore Enabling Efficient Non‐Doped Blue Electron‐Fluorescence with Negligible Efficiency Roll‐Off and Phosphorescent OLEDs with Ultra‐Low Power Consumption. - Sun, Yufu; Fu, Xi‐Feng; Hou, Chen‐Lu; Zhang, Dong‐Hai; Hu, Jia‐Xuan; Lin, Fu‐Lin; Meng, Lingyi; Zhou, Liang; Chen, Xu‐Lin; Lu, Can‐Zhong (Advanced Optical Materials, 2025)