Polymer‐Based n‐Type Yarn for Organic Thermoelectric Textiles

A conjugated-polymer-based n-type yarn for thermoelectric textiles is presented. Thermoelectric textile devices are intriguing power sources wearable electronic devices. The use of yarns comprising conjugated polymers desirable because their potentially superior mechanical properties compared to other materials. While several examples p-type conducting exist, there a lack polymer-based yarns. Here, regenerated cellulose spray-coated with an conducting-polymer-based ink composed poly(benzimidazobenzophenanthroline) (BBL) and poly(ethyleneimine) (PEI). display bulk electrical conductivity 8 × 10−3 S cm−1 Seebeck coefficient −79 µV K−1. promising level air-stability at least 13 days can be achieved by applying additional thermoplastic elastomer coating. prototype in-plane textile, produced the developed yarns, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-coated cellulose, displays stable device performance in air 4 open-circuit voltage per temperature difference 1 mV °C−1. Evidently, viable component construction