52.2: High‐efficiency RED Organic Light Emitting Material and Device Based on Triplet Emission with Ir Complex

Abstract

Abstract We studied red emissive materials of Ir‐complex. We demonstrate high efficiency red OLED devices employing phosphorescent dopant. Ir(piq) 3 [Iridium(III)tris(1‐phenyl‐isoquinolinato‐N, C 2 )] shows maximum emission peak of 623nm and excellent Q.Y with 0.66 compared to Ir(ppy) 3 as a unit. Efficiency of the EL device is 8.0 lm/W, 9.3 cd/A at 100cd/m 2 , 623 lm/W, 8.4 cd/A at 300cd/m 2 . CIE‐ coordinate is (0.68,0.33) and it meets NTSC specification.