Conjugated Zwitterionic Polyelectrolyte as the Charge Injection Layer for High-Performance Polymer Light-Emitting Diodes
Conjugated Zwitterionic Polyelectrolyte as the Charge Injection Layer for High-Performance Polymer Light-Emitting Diodes
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DOI：
10.1021/ja108541z
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发表时间：
2011-02-02
影响因子：
15
通讯作者：
Huck, Wilhelm T. S.
中科院分区：
文献类型：
--
作者：
Fang, Junfeng;Wallikewitz, Bodo H.;Huck, Wilhelm T. S.
一种新型的不含自由反离子的两性离子共轭聚电解质被用作聚合物发光二极管的电子注入材料。与标准的钙阴极器件相比，效率和最大亮度都有了很大的提高。器件表现出非常快的响应时间，这表明除了空穴阻挡之外，性能的提高还归因于阴极界面上的偶极子，这有利于电子注入。
A new zwitterionic conjugated polyelectrolyte without free counterions has been used as an electron injection material in polymer light-emitting diodes. Both the efficiency and maximum brightness were considerably improved in comparison with standard Ca cathode devices. The devices showed very fast response times, indicating that the improved performance is, in addition to hole blocking, due to dipoles at the cathode interface, which facilitate electron injection.