Here, we report the use of two high-spin pro-quinoid benzo[1,2-c;4,5-c′]bisthiadiazole (BBT) polymers for high-performance solution-processable polymer thermoelectrics. Sequential solution-phase doping using FeCl₃ as p-dopant results in very high electrical conductivities of over 300 S cm^–1, even though these BBT polymers take on face-on orientation. By optimizing the level of doping, we achieved the best thermoelectric performance with an average electrical conductivity of 232.7 ± 23.7 S cm^–1, Seebeck coefficient of 49.4 ± 3.6 μV K^–1, and power factor of 56.5 ± 4.3 μW m^–1 K^–2. The importance of polaron/bipolarons delocalization and triplet bipolarons to achieve high electrical conductivity and Seebeck coefficient simultaneously is rationalized.

中文翻译：

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用于高性能溶液可加工聚合物热电学的高自旋原喹啉苯并[1,2-c; 4,5-c']双噻二唑共轭聚合物

在这里，我们报告了使用两种高自旋原醌类苯并[1,2- c ; 4,5- c ']双噻二唑（BBT）聚合物制备高性能溶液可加工的聚合物热电材料。使用FeCl ₃作为p型掺杂剂的顺序固溶相掺杂会产生非常高的电导率，超过300 S cm ^–1，即使这些BBT聚合物具有面对面的取向。通过优化掺杂水平，我们获得了最佳的热电性能，平均电导率为232.7±23.7 S cm ^–1，塞贝克系数为49.4±3.6μVK ^–1，功率因数为56.5±4.3μWm ^–1 K ^–2。合理化了极化子/双极化子离域化和三重态双极化子对同时实现高电导率和塞贝克系数的重要性。