and electrical stability. Typical LED devices were fabricated by mixing the dyes with polyvinylcarbazole and spin-coated to form thin films, which were sandwiched between ITO (indium tin oxide) and a metal electrode. These devices displayed yellow-orange emissions with quantum efficiency ca. 0.4%.
4-取代的
8-羟基喹啉的铝和
锌配合物被有效地用作发光二极管(LED)中的
发光材料。本研究中选择的取代基是对甲氧基-2-
苯乙烯基、对二乙
氨基-2-
苯乙烯基和
萘-2-
乙烯基。由于扩展了它们的 π 共轭,它们的发射光谱相对于三(羟基
喹啉)铝 (Alq 3 ) 的发射光谱发生了红移。所有配合物都形成了无定形
玻璃,具有很高的热稳定性和电稳定性。典型的 LED 器件是通过将
染料与聚
乙烯咔唑混合并旋涂形成薄膜来制造的,薄膜夹在 ITO(氧化
铟锡)和
金属电极之间。这些设备显示出黄橙色发射,量子效率约为。0.4%。