A Pyridine-Containing Anthracene Derivative with High Electron and Hole Mobilities for Highly Efficient and Stable Fluorescent Organic Light-Emitting Diodes
作者:Yongduo Sun、Lian Duan、Deqiang Zhang、Juan Qiao、Guifang Dong、Liduo Wang、Yong Qiu
DOI:10.1002/adfm.201002691
日期:2011.5.24
pyridine‐containing anthracene derivative, 9,10‐bis(3‐(pyridin‐3‐yl)phenyl)anthracene (DPyPA), which comprehensively outperforms the widely used electron‐transport material (ETM), tris(8‐quinolinolato) aluminum (Alq3), is synthesized. DPyPA exhibits ambipolar transport properties, with both electron and hole mobilities of around 10−3 cm−2 V−1 s−1; about two orders of magnitude higher than that of Alq3
含吡啶的蒽衍生物9,10-双(3-(吡啶-3-基)苯基)蒽(DPyPA),其性能完全优于广泛使用的电子传输材料(ETM)三(8-喹啉)铝(Alq 3)被合成。DPyPA表现出双极性传输性质,电子迁移率和空穴迁移率均约为10 -3 cm -2 V -1 s -1。比Alq 3高约两个数量级。DPyPA吡啶环中的氮原子配位为锂阳离子,当使用LiF / Al作为阴极时,可实现有效的电子注入。电化学测量表明DPyPA的阳离子和阴离子都是稳定的,这可能会改善基于DPyPA的设备的稳定性。与将Alq 3用作ETM的设备相比,以DPyPA作为ETM的红色,绿色和蓝色荧光有机发光二极管显示出更低的开启电压,更高的效率和更强的亮度。与Alq 3相比,基于DPyPA的设备的功率效率提高了80–140%基于设备。这些设备性能的提高归因于载流子平衡的增加。此外,采用DPyPA作为ETM的设备具有出色的稳定性:基于DPyPA的设备的半衰期为6