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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Thon, Susanna M.
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article
Blended Conjugated Host and Unconjugated Dopant Polymers Towards N‐type All‐Polymer Conductors and High‐ZT Thermoelectrics
Abstract
<jats:title>Abstract</jats:title><jats:p>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 (<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/anie202219313-math-0001.png" xlink:title="urn:x-wiley:14337851:media:anie202219313:anie202219313-math-0001" /> ) 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 <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/anie202219313-math-0002.png" xlink:title="urn:x-wiley:14337851:media:anie202219313:anie202219313-math-0002" />of 78 S<jats:sup>−1</jats:sup>, power factor (<jats:italic>PF</jats:italic>) of 163 μW m<jats:sup>−1</jats:sup> K<jats:sup>−2</jats:sup>, and maximum Figure of merit (<jats:italic>ZT</jats:italic>) 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 (<jats:italic>S</jats:italic>) absolute values relative to <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/anie202219313-math-0003.png" xlink:title="urn:x-wiley:14337851:media:anie202219313:anie202219313-math-0003" /> , and atypical decreased thermal conductivity (<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/anie202219313-math-0004.png" xlink:title="urn:x-wiley:14337851:media:anie202219313:anie202219313-math-0004" /> ) with increased doping ratio contribute to the promising performance.</jats:p>