Thermoelectric properties of PEDOT/PSS films prepared by a Gel-film formation process
Thermoelectric properties of PEDOT/PSS films prepared by a Gel-film formation process
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DOI：
10.1016/j.matlet.2019.05.005
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发表时间：
2019-09-15
影响因子：
3
通讯作者：
Mitsuishi, Masaya
中科院分区：
文献类型：
--
作者：
Maeda, Ryota;Kawakami, Hiroshi;Mitsuishi, Masaya
我们开发了一种制造热电材料薄膜的技术，PEDOT/PSS，通过凝胶成膜工艺增强了热电性能。该工艺的显着特点是 1) 没有任何常用的预处理和后处理步骤，2) 宽膜厚度控制。新工艺不同于旋涂法和滴铸法等直接成膜工艺。膜厚可控制在1～30μm范围内。在本研究中，我们研究了电导率 (sigma) 和塞贝克系数 (S) 对膜厚度 (d) 的依赖性。 a 的值随着 d 的减小而增大，而 S 的值随着 d 的减小而略有减小。通过此过程，使用乙醇作为胶凝溶剂，在 d = 1.1 μm 时实现了 sigma = 1070 S/cm 和 S = 16.0 mu V/K 值。乙醇在去除多余的 PSS 和诱导随后的胶凝方面发挥着重要作用。 (C) 2019 Elsevier B.V. 保留所有权利。
We have developed a technique for fabricating films of the thermoelectric material, PEDOT/PSS, with enhanced thermoelectric properties via a gel-film formation process. The salient features of the process are 1) the absence of any commonly used pre- and post-treatment steps and 2) wide film thickness control. The new process is different from direct film-formation processes such as the spin-coating and drop-casting methods. The film thickness can be controlled in the range of 1 to 30 mu m. In this study, we investigated the dependence of the electrical conductivity (sigma) and Seebeck coefficient (S) on the film thickness (d). While the value of a increased with decreasing d, S decreased slightly with decreasing d. By this process, values of sigma = 1070 S/cm and S = 16.0 mu V/K were achieved for d = 1.1 mu m, using ethanol as the gelling solvent. Ethanol plays the important roles of removing excess PSS and inducing subsequent gelling. (C) 2019 Elsevier B.V. All rights reserved.