为改善聚二氧乙基噻吩∶聚对苯乙烯磺酸(PEDOT∶PSS) 薄膜的光电性能, 采用共混-旋涂法在玻璃基片上分别制备出经丙三醇、山梨醇、二甲基亚砜(DMSO)掺杂的PEDOT∶PSS透明导电膜。利用X射线衍射仪(XRD), 扫描电子显微镜(SEM), 原子力显微镜(AFM), 紫外可见分光光度计及四点探针法对薄膜的微结构与性能进行了研究。实验结果表明: 不同掺杂剂的加入均未改变PEDOT∶PSS薄膜的聚集态结构, 而薄膜的表面形貌出现了明显的不同; 掺杂后薄膜电导率和透光率均有明显提高, 并且经退火后电导率随着退火温度的升高而增加; 在相同的掺杂浓度下, 掺杂山梨醇的PEDOT∶PSS薄膜表现出最好的电导率和透光率。

In order to improve the optical and electrical properties of poly(3,4- ethylenedioxythiophene)/poly(4-styrenesulfonate)(PEDOT∶PSS)film,the PEDOT∶PSS doped with Gly-cerin,Sorbital and Dimethyl Sulfoxide transparent conducting thin films were fabricated on glass substrates by blending-spin coating method.The microstructure and properties of these films were studied by X-ray diffraction,scanning electron microscope,atomic force microscopy,UV spectrophotometer and four-point probe method. Experimental results show that the amorphous state of PEDOT∶PSS films doped with different agent does not change,but the surface morphology of thin films appear significantly different.The conductivity and light transmittance of the doped-films is greatly enhanced, and the conductivity increases as the annealing temperature rise.Under the same doping concentration, the PEDOT∶PSS thin films doped with Sorbital reach the best conductivity and light transmittance.