Synthesis of charge transporting block copolymers containing 2,7-dimethoxycarbazole units for light emitting device
作者:Kousuke Tsuchiya、Kota Sakaguchi、Hidemasa Kasuga、Akira Kawakami、Hideo Taka、Hiroshi Kita、Kenji Ogino
DOI:10.1016/j.polymer.2009.12.024
日期:2010.2
The block copolymers consisting of 2,7-dimethoxycarbazole- and oxadiazole-containing segments as hole and electron transporting units, respectively, were synthesized by NMRP manner. OLED devices were fabricated using block copolymer, random copolymer, and polymer blend for matrix of the emitting layer with Ir(ppy)3 as a phosphorescent dopant in order to investigate morphological effect on the performance
通过NMRP法合成了分别由含2,7-二甲氧基咔唑和恶二唑链段作为空穴和电子传输单元的嵌段共聚物。使用嵌段共聚物,无规共聚物和聚合物共混物作为发光层的Ir(ppy)3作为磷光掺杂剂,制备了OLED器件,以研究形态对性能的影响。从发现EQE中嵌段共聚物体系不堪重负的发现来看,我们认为具有二甲氧基咔唑单元组装在PEDOT:PSS表面的形态对于电荷的有效重组以及足够的电荷注入发光层起着相当重要的作用。