Synthesis and optoelectronic properties of thermally cross-linkable hole-transporting poly(fluorene-co-triphenylamine)
作者:Wen-Fen Su、Yun Chen
DOI:10.1016/j.polymer.2010.10.065
日期:2011.1
a new thermally cross-linkable hole-transporting poly(fluorene-co-triphenylamine) (PFTV) by Suzuki coupling reaction and its application in polymer light-emitting diodes (PLEDs). The characteristics of PFTV were analyzed by 1H NMR, differential scanning calorimetry, optical spectroscopy, cyclic voltammetry, and atomic force microscopy. Its HOMO level lies between those of PEDOT:PSS and poly(9,9-dioctylfluorene)
本文描述了一种新型的可热交联的空穴传输聚(芴-co-三苯胺)(PFTV)的合成,及其在聚合物发光二极管(PLEDs)中的应用。通过1 H NMR,差示扫描量热法,光谱,循环伏安法和原子力显微镜分析了PFTV的特性。它的HOMO能级介于PEDOT:PSS和聚(9,9-二辛基芴)的能级之间,形成阶梯式能量阶梯,有助于空穴注入。具有热交联PFTV作为空穴传输层的多层器件(ITO / PEDOT:PSS / HTL / PFO/ LiF / Ca / Al)可以通过连续旋涂工艺轻松制造,其最大发光效率(2.27 cd / A)明显高于没有PFTV层的最大发光效率(0.50 cd / A)。此外,PFTV已成功地用作发红光的Ir(piq)2 acac的主机,从而获得了性能中等(5300 cd / m 2和2.64 cd / A)的设备。该PFTV为多层的PLED的通过湿法工艺以及磷光PLED中一个潜在的宿主制造中的有前途的空穴传输材料。