Polymer-Based n-Type Yarn for Organic Thermoelectric Textiles
Artikel i vetenskaplig tidskrift, 2023

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

poly(benzimidazobenzophenanthroline) (BBL)

electrically conducting regenerated cellulose yarn

thermoelectric textile devices

organic thermoelectrics

electronic textiles (e-textiles)


Sozan Darabi

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Chi Yuan Yang

n-Ink AB

Linköpings universitet

Zerui Li

Sichuan University

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Jun Da Huang

Linköpings universitet

Michael Hummel


Herbert Sixta


S. Fabiano

n-Ink AB

Linköpings universitet

Christian Müller

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Advanced Electronic Materials

2199-160X (ISSN) 2199160x (eISSN)

Vol. 9 4 2201235



Textil-, gummi- och polymermaterial




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