A novel crosslinkable water/alcohol soluble conjugated polymer PFN-C containing oxetane groups and aminoalkyl groups in the side chains has been developed and used as highly efficient electron injection and transporting material for polymer light-emitting diodes (PLEDs). The unique solubility in polar solvents and crosslinkable ability of PFN-C render it a good candidate for solution processed multilayer PLEDs. It was found that PFN-C can greatly enhance the electron injection from high work-function metal cathode, due to its pendant amino groups. As a result, PLEDs with PFN-C/Al cathode exhibited comparable device performance to the devices with Ba/Al cathode. The resulting green light-emitting device showed promising performance with a maximum luminance efficiency of 13.53 cd A−1.
开发了一种新型的可交联
水/醇溶解的共轭聚合物PFN-C,其侧链中含有环氧烷基和
氨基烷基。该聚合物被用作高效的电子注入和传输材料,适用于聚合物发光二极管(PLEDs)。PFN-C在极性溶剂中的独特溶解性和可交联能力使其成为适合于溶液处理的多层PLEDs的良好候选材料。研究发现,PFN-C能够显著增强来自高功函数
金属阴极的电子注入,这得益于其侧链的
氨基基团。因此,采用PFN-C/铝阴极的PLEDs显示出与采用
钡/铝阴极的器件相当的性能。最终生成的绿色发光器件显示出令人振奋的性能,最高光效为13.53 cd A−1。