Abstract Organic thermoelectric (TE) materials are widely applied in various flexible portable products owing to their flexibility, transparency, and light weight. However, the performance of organic TE materials still needs to be further enhanced, seeking the composite preparation approach is one of the main strategies. Herein, an organic hybrid TE film, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and polyaniline (PANI), is prepared by solution in situ composite. In situ composite can not only enhance the TE property of the PANI, but also can increase the contact surface between PANI with the PEDOT:PSS, ameliorating the energy scattering effect. In addition, due to the introduction of PEDOT:PSS, the flexibility and solubility of PANI are effectively improved. When the feeding ratio of the aniline is 20 wt%, the electrical conductivity of the hybrid reached 43.7 S cm−1, which can be attributed to the strong interaction between PSS and PANI. After treated with DMSO&CSA, the hybrid reveals an apparent promotion of power factor as 4.26 μW m−1 K−2. The in situ composite method can provide a reference for the combination of various amino derivatives with conducting polymers, as well as to optimize the TE properties of hybrid films.

中文翻译：

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原位制备的 PEDOT:PSS:PANI 通过有机溶剂和 CSA 处理增强了热电性能

摘要 有机热电（TE）材料由于具有柔韧、透明和重量轻等优点，被广泛应用于各种柔性便携式产品中。然而，有机热电材料的性能仍有待进一步提升，寻求复合制备途径是主要策略之一。在此，通过溶液原位复合制备有机杂化 TE 薄膜，聚（3,4-亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）和聚苯胺（PANI）。原位复合材料不仅可以增强PANI的TE性能，还可以增加PANI与PEDOT:PSS的接触面，改善能量散射效应。此外，由于PEDOT:PSS的引入，有效提高了PANI的柔韧性和溶解性。当苯胺的进料比例为 20 wt% 时，混合体的电导率达到 43.7 S cm-1，这可以归因于 PSS 和 PANI 之间的强相互作用。用 DMSO&CSA 处理后，混合显示功率因数明显提升为 4.26 μW m-1 K-2。原位复合方法可为各种氨基衍生物与导电聚合物的结合以及优化杂化薄膜的热电性能提供参考。