We report the synthesis and device characterization of a novel iridium complex using a phenylpyridine derivative containing an imide functional group as a bis-cyclometallized ligand ((impy)2Ir(acac)) for orange organic light-emitting diodes (OLEDs). The photoluminescence of the dopant emits orange light with the main peak of 560 nm and a shoulder of 595 nm. The OLEDs made with the synthesized dopant also produce intense orange electroluminescence at 568–572 nm wavelengths depending on the device geometry. Very high peak external quantum efficiencies of 13.8–14.4%, peak power efficiencies of 29.2–32.7 lm/W, and low operation voltages of 5.3–5.4 V at 1000 cd/m2 have been demonstrated for the orange OLEDs.
我们报道了一种新型
铱配合物的合成及器件表征,该配合物使用含有
酰亚胺官能团的苯基
吡啶衍生物作为双环
金属化
配体((impy)2Ir(acac)),用于橙色有机发光二极管(OLED)。掺杂剂的光致发光发出橙色光,主要峰值为560 nm,肩峰为595 nm。使用合成的掺杂剂制作的OLED在568–572 nm的波长下也产生强烈的橙色电致发光,具体波长取决于器件几何形状。橙色OLED已显示出非常高的峰值外量子效率为13.8–14.4%、峰值功率效率为29.2–32.7 lm/W,以及在1000 cd/m²下低工作电压为5.3–5.4 V。