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首页> 外文期刊>RSC Advances >Effects of different electrolytes and film thicknesses on structural and thermoelectric properties of electropolymerized poly( 3,4ethylenedioxythiophene) films
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Effects of different electrolytes and film thicknesses on structural and thermoelectric properties of electropolymerized poly( 3,4ethylenedioxythiophene) films

机译：不同电解质和膜厚度对电聚合聚（3,4,4,4,4,4,4亚甲基噻吩）膜的结构和热电性能的影响

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摘要

The effects of the type of electrolyte and film thickness on the structural and thermoelectric properties of poly(3,4-ethylenedioxythiophene) (PEDOT) thin films on indium-tin-oxide (ITO) substrates prepared using electropolymerization were investigated. Two electrolytes were prepared using two different solvents: a water/methanol solvent (protic solvent) and acetonitrile (aprotic solvent) with 3,4-ethylenedioxythiophene (EDOT) and LiCF3SO3, typically included in electrolytes as dopants. The electrochemical properties of the two electrolytes were analyzed; it was found that the polymerization process for EDOT on an ITO substrate varied based on the electrolyte used. When the electropolymerization time was increased, the surface morphology of the PEDOT films prepared using the water/methanol solvent appeared to contain grains approximately 100nm in size whereas the PEDOT films prepared using acetonitrile appeared to contain aggregated grains connected by polymeric networks. Even though there were differences in the surface morphology and chemical bonds determined using Fourier-transform infrared spectroscopy/attenuated total reflectance analysis, the thermoelectric properties were strongly dependent on the film thickness and were only weakly dependent on the type of electrolyte used. The highest power factor was 41.3 W (m(-1) K-2) for a PEDOT film with a thickness of 0.5 m prepared using the water/methanol solvent electrolyte.
机译：研究了电解质和膜厚度对使用电聚合制备的氧化铟锡（ITO）氧化物（ITO）衬底上的聚（3,4-亚乙基噻吩）（PEDOT）薄膜的结构和热能的影响。使用两种不同的溶剂制备两种电解质：用3,4-亚乙二氧基噻吩（Edot）和LicF3SO3的水/甲醇溶剂（质子溶剂）和乙腈（非质子溶剂），通常包括在电解质中作为掺杂剂。分析了两种电解质的电化学特性;发现，基于所用的电解质改变ITO衬底上的ESTOT的聚合方法。当电聚合时间增加时，使用水/甲醇溶剂制备的佩特膜的表面形态似乎含有约100nm的颗粒，而使用乙腈制备的佩特膜似乎含有聚合物网络连接的聚集颗粒。尽管使用傅里叶变换红外光谱/减毒总反射率分析确定的表面形态和化学键的差异，但热电性能强烈取决于膜厚度，并且仅弱依赖于所用电解质的类型。对于使用水/甲醇溶剂电解质制备的厚度为0.5μm的佩特膜，最高功率因数是41.3W（m（-1）k-2）。

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  • 来源
    《RSC Advances》 |2019年第28期|共9页
  • 作者

    Seki Yuhei; Takahashi Momoko; Takashiri Masayuki;

  • 作者单位

    Tokai Univ Dept Mat Sci 4-1-1 Kitakaname Hiratsuka Kanagawa 2591292 Japan;

    Tokai Univ Dept Mat Sci 4-1-1 Kitakaname Hiratsuka Kanagawa 2591292 Japan;

    Tokai Univ Dept Mat Sci 4-1-1 Kitakaname Hiratsuka Kanagawa 2591292 Japan;

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  • 正文语种 eng
  • 中图分类 化学;
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