(HFP)2Ir(pic), (HFP)2Ir(mpic), and (HFP)2Ir(fptz) with electron-withdrawing heptafluoropropyl groups exhibited wide band gaps with high PL QYs and the devices showed the EQEs of 19.7%, 21.4% and 14.2% and CIE coordinates of (0.147, 0.164), (0.146, 0.165) and (0.152, 0.148), respectively.