摘要
聚3,4-乙撑二氧噻吩(PEDOT)是一种导电聚合物材料,与聚苯乙烯磺酸盐(PSS)络合后溶解于水形成PEDOT/PSS水溶液。由于PEDOT/PSS薄膜的电导率较低,限制了其在柔性器件上的应用。考察了含有不同羟基数目和端基含有甲基的醇类助剂、醇助剂的质量分数、炭黑质量分数以及热退火条件对PEDOT/PSS薄膜导电性和耐溶剂性的影响。结果表明:醇的亲水性的增加有利于提高PEDOT/PSS薄膜的导电性,且当乙二醇的体积分数为2%时PEDOT/PSS薄膜的方块电阻能达到35Ω/sq。PEDOT/PSS薄膜在DMSO溶剂中的浸泡实验表明,PEDOT/PSS薄膜在DMSO溶剂中表现稳定,同时DMSO有利于进一步提高PEDOT/PSS薄膜的导电性。此外,碳黑的掺杂也能有效地提高PEDOT/PSS薄膜导电性能。
Poly(3-ethylenedioxythiophene)(PEDOT)is a kind of conductive polymer material,which is generally complexed with polystyrene sulfonate(PSS)and dissolved in water to form PEDOT/PSS aqueous solution.Improving the electrical conductivity and water resistance of PEDOT/PSS films is the key to the preparation of high performance flexible conductive polymer films,which is of great significance in the field of flexible electronic devices.In this study,the effects of additives,including different alcohols,carbon blacks on the conductivity of PEDOT/PSS films were studied.The ethanol,isopropanol,ethylene glycol,propylene glycol and sorbitol were used in this study.Results showed that the degree of hydrophility of alcohols significantly influenced the conductivity of PEDOT/PSS films,and the conductivity of PEDOT/PSS films was significantly improved when using higher hydrophility of alcohol.The square resistance of PEDOT/PSS films was achieved to 35Ω/sq when the volume fraction of ethylene glycol was 2%,and the PEDOT/PSS films were stable in DMSO solvent.In addition,the addition of carbon black can also improve the electrical conductivity of PEDOT/PSS thin films.
作者
刘航程
宋杨
樊宇
郭玉冬
王秉轩
梁永日
LIU Hangcheng;SONG Yang;FAN Yu;GUO Yudong;WANG Bingxuan;LIANG Yongri(School of Materials Science and Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617)
出处
《北京石油化工学院学报》
2020年第3期1-6,共6页
Journal of Beijing Institute of Petrochemical Technology
基金
“十三五”时期北京市属高校高水平教师队伍建设支持计划(CIT&TCD20190315)
北京石油化工学院URT项目(2017311470)。
