Multifunctional Triphenylamine/Oxadiazole Hybrid as Host and Exciton-Blocking Material: High Efficiency Green Phosphorescent OLEDs Using Easily Available and Common Materials
作者:Youtian Tao、Qiang Wang、Chuluo Yang、Cheng Zhong、Jingui Qin、Dongge Ma
DOI:10.1002/adfm.201000669
日期:2010.9.9
triphenylamine/oxadiazole hybrid, namely m‐TPA‐o‐OXD, formed by connecting the meta‐position of a phenyl ring in triphenylamine with the ortho‐position of 2,5‐biphenyl‐1,3,4‐oxadiazole, is designed and synthesized. The new bipolar compound is applicable in the phosphorescent organic light‐emitting diodes (PHOLEDs) as both host and exciton‐blocking material. By using the new material and the optimization
一种新的三苯基胺/二唑混合,即中号-TPA- Ó -OXD,通过连接而形成的元与所述苯基环的-位在三苯胺邻2,5-联苯-1,3,4-恶二唑的位上,是设计和合成。新型双极性化合物可作为主体材料和激子阻挡材料应用于磷光有机发光二极管(PHOLED)中。通过使用新材料和优化器件结构,可以实现非常高效的绿色和黄色电致磷光。例如,通过引入1,3,5-三(N-苯基苯并咪唑-2-基)苯(TPBI)代替2,9-二甲基-4,7-二苯-1,10-菲咯啉(BCP)/三( 8-羟基喹啉)铝(Alq 3)作为空穴阻挡/电子输送层,随后通过调谐空穴传输1,4-双的厚度[(1-萘基)氨基]联苯(NPB)层来操纵电荷平衡,最大外量子效率(η EQE ,最大)23.0%和最大功率效率(η p,最大94.3流明W的)-1被用于获得(PPY)2的Ir(ACAC)基于绿色电致磷光。接着,通过插入的薄层米-TPA- ö -OXD用