Thermoelectric (TE) composites are emerging materials with unique capability to directly convert heat to electricity. Poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT) has received increasing attention for TE application. Relative to inorganic counterparts, organic polymers and their composites have various advantages of low heat conductivity, element richness and high adjustability in both molecular structure and processing method. In particular, PBTTT can be processed by both solution and melting techniques. In this review, we focus on the recent progress of PBTTT TE composites. The synthesis technique and PBTTT's basic properties are firstly introduced. Then, the TE performance of the neat PBTTT are discussed. After that, we mainly summarised the recent advances in PBTTT TE composites with carbon nanotubes or graphene as the inorganic constituents. Finally, the research challenges and future prospects are outlooked.

热电(TE) 复合材料是新兴材料，具有将热量直接转化为电能的独特能力。聚（2,5-双（3-烷基噻吩-2-基）噻吩并[3,2-b]噻吩）（PBTTT）在TE应用中受到越来越多的关注。相对于无机对应物，有机聚合物其复合材料具有导热系数低、元素丰富、分子结构和加工方法可调性高等优点。特别是，PBTTT 可以通过溶液和熔化技术进行加工。在这篇综述中，我们关注 PBTTT TE 复合材料的最新进展。首先介绍了PBTTT的合成工艺和基本性质。然后，讨论了纯 PBTTT 的 TE 性能。之后，我们主要总结了以碳纳米管或石墨烯为无机成分的PBTTT TE复合材料的最新进展。最后，展望了研究挑战和未来前景。