Blended Conjugated Host and Unconjugated Dopant Polymers Towards N‐type All‐Polymer Conductors and High‐ZT Thermoelectrics
Blended Conjugated Host and Unconjugated Dopant Polymers Towards N‐type All‐Polymer Conductors and High‐ZT Thermoelectrics
复制标题
混合共轭主体和非共轭掺杂聚合物以实现 N 型全聚合物导体和高 ZT 热电材料
DOI：
10.1002/anie.202219313
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Clancy, Paulette
中科院分区：
文献类型：
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作者：
Han, Jinfeng;Jiang, Yufeng;Tiernan, Emma;Ganley, Connor;Song, Yunjia;Lee, Taein;Chiu, Arlene;McGuiggan, Patty;Adams, Nicholas;Clancy, Paulette
N型热电体通常由小分子掺杂剂+聚合物主体组成。仅报道了少数聚合物掺杂剂+聚合物主体系统，并且这些具有较低的热电参数。具有高结晶度和有序性的N型聚合物通常用于高导电性（）有机导体。已经报道了用于高导电性材料的仅具有短程层状堆叠的少数n型聚合物。在这里，我们描述了一种n型短程层状堆叠全聚合物热电系统， 的78 S-1，功率因数（PF）为163 μW m-1 K-2，最大优值（ZT）为0.53，在室温下，掺杂剂/基质比为75 wt%。 聚合物掺杂剂在高比率下对共轭聚合物PDPIN的分子排列的较小影响、高掺杂能力、相对于的高塞贝克系数（S）绝对值以及随着掺杂比率增加而非典型降低的热导率（）有助于有希望的性能。
N‐Type thermoelectrics typically consist of small molecule dopant+polymer host. Only a few polymer dopant+polymer host systems have been reported, and these have lower thermoelectric parameters. N‐type polymers with high crystallinity and order are generally used for high‐conductivity ( ) organic conductors. Few n‐type polymers with only short‐range lamellar stacking for high‐conductivity materials have been reported. Here, we describe an n‐type short‐range lamellar‐stacked all‐polymer thermoelectric system with highest of 78 S−1, power factor (PF) of 163 μW m−1K−2, and maximum Figure of merit (ZT) of 0.53 at room temperature with a dopant/host ratio of 75 wt%. The minor effect of polymer dopant on the molecular arrangement of conjugated polymer PDPIN at high ratios, high doping capability, high Seebeck coefficient (S) absolute values relative to , and atypical decreased thermal conductivity ( ) with increased doping ratio contribute to the promising performance.