PEDOT∶PSS的凹版印刷成膜及其纸基变色器件的制备

Gravure Printed PEDOT∶PSS Film on Paper Substrate and Preparation of Electrochromic Device

基于聚3,4-乙烯二氧噻吩∶聚苯乙烯磺酸(PEDOT∶PSS)的电致变色性能及潜在的导电特性,本研究通过异丙醇(IPA)和二甲基亚砜(DMSO)的掺杂来调控PEDOT∶PSS溶液,并在纸面上通过凹版印刷成膜,然后利用甲酸(CH_(2)O_(2))进行处理得到高导电的PEDOT∶PSS薄膜,将其作为电致变色活性层和电极层的共用功能层制备了具有简化结构的纸基电致变色器件(ECDs)。结果表明,DMSO与IPA的协同作用促使PEDOT∶PSS在纸面实现均匀成膜,制备的纸基ECDs能够在低电压2.0V下达到良好的饱和电致变色效果,颜色对比度为20,光学对比度为0.24,着色、褪色响应时间分别为3.3s、3.0s,着色效率可达86.9cm^(2)·C^(-1)。因此,采用低成本、高通量的凹版印刷技术能够高效的实现纸基ECDs的制备,并且有望将其直接印刷在包装产品表面,实现产品信息的电子化显示。

Based on the electrochromic properties and the potential conductive properties of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS),the doping of isopropanol(IPA)and dimethyl sulfoxide(DMSO)were used to regulate PEDOT∶PSS solution and the film was formed by gravure printing on the paper surface in this study.Then the simplified structure paper-based electrochromic devices(ECDs)employed the PEDOT:PSS film treated with formic acid(CH_(2)O_(2))as the common functional layer of electrochromic and electrode.The results showed that the synergistic effected of DMSO and IPA promotes the uniform film-forming on paper substrate,and the as-prepared paper-based ECDs can achieve good saturation electrochromic effect at a low external bias of 2.0V.The color contrast was 20,the optical contrast was 0.24,the response time of coloring and bleaching were 3.3s and 3.0s respectively,and coloring efficiency up to 86.9cm^(2)·C^(-1).Therefore,paper-based ECDs can be efficiently manufactured with low cost,high-throughput gravure printing techniques,which is expected that directly printed on the surface of packaging products to realize electronic display of product information.