Blue Phosphorescence and Hyperluminescence Generated from Imidazo[4,5‐b]pyridin‐2‐ylidene‐Based Iridium(III) Phosphors oleh Xilin Yang, Xiuwen Zhou, Ye‐Xin Zhang, Deli Li, Chensen Li, Caifa You, Tai‐Che Chou, Shi‐Jian Su, Pi‐Tai Chou, Yun Chi