Abstract In recent years, organic/inorganic hybrids capture wide attention due to their advantages in endowing composites with both high Seebeck coefficient and low thermal conductivity originating from inorganics and polymer, respectively. However, simply blending tend to weaken this advantage, resulting in lower thermoelectric performance than that of single organics or inorganics. Here we propose a polar organic solvents aided layer-by-layer (OS-LbL) technique to prepare high performance nanocomposite films comprising poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) and Sb2Te3 nanocomposites. Polar organic solvents not only promote the dispersion of Sb2Te3 nanoplates but also post-treat the PEDOT:PSS layer at the hetero-junction interface, successfully increasing the electrical conductivity and thermopower at the same time. Besides, the organic/inorganic interface inducing by OS-LbL promotes a low thermal conductivity of 0.0522 Wm−1K−1. As a result, a maximum ZT value up to 0.10 at room temperature. The results show that using OS-LbL method to combine PEDOT:PSS with Sb2Te3 nanoplates is a promising pathway to achieve polymer-based, high-performance thermoelectric applications.

中文翻译：

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通过极性有机溶剂辅助逐层技术同时提高热电势和电导率

摘要 近年来，有机/无机杂化材料因其分别源自无机物和聚合物的复合材料具有高塞贝克系数和低热导率的优点而受到广泛关注。然而，简单的混合往往会削弱这种优势，导致热电性能低于单一有机物或无机物。在这里，我们提出了一种极性有机溶剂辅助逐层 (OS-LbL) 技术来制备包含聚（3,4-亚乙基二氧噻吩）：聚（4-苯乙烯磺酸盐）（PEDOT：PSS）和 Sb2Te3 纳米复合材料的高性能纳米复合薄膜。极性有机溶剂不仅促进了 Sb2Te3 纳米片的分散，而且还对异质结界面处的 PEDOT:PSS 层进行了后处理，同时成功地提高了电导率和热电势。此外，OS-LbL 诱导的有机/无机界面促进了 0.0522 Wm-1K-1 的低热导率。因此，室温下最大 ZT 值可达 0.10。结果表明，使用 OS-LbL 方法将 PEDOT:PSS 与 Sb2Te3 纳米片相结合是实现聚合物基高性能热电应用的有前景的途径。