Thermoelectric PEDOT:PSS Sheet/SWCNTs composites films with layered structure

Abstract

PEDOT:PSS has been a major area of interest in the field of thermoelectrics in recent years. Extensive research has shown that doping or various post-washing treatment can effectively improve the conductivity. This article proposes PEDOT:PSS sheet as the building block to fabricate functional polymer composites based on PEDOT:PSS, thus, expand the contact area between PEDOT:PSS and secondary treatment agent to improve the efficiency of doping or post-treatment. On this basis, single wall carbon nanotubes (SWCNT) was added to optimize the comprehensive thermoelectric performance of the composites. With a rather low SWCNT content of 30 wt%, PEDOT:PSS sheet/SWCNT composite film with layered structure achieves conductivity of 3085.4 S cm−1 and PF value of 224 μW m−1 K−2. The preparation of such sheet PEDOT:PSS provides a new possibility for the preparation of functional polymer composites.