Abstract

Among conducting polymers, poly(3,4-ethylenedioxythiophene) (PEDOT) has become one of the most potential candidates for thermoelectric applications due to its outstanding features, such as excellent environmental stability, high conductivity, and so forth. Moreover, its aqueous solution poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) provides the possibility for the solution processing of PEDOT. After careful posttreatment, σ and ZT of PEDOT:PSS have been beyond 1000Scm−1 and 0.4, which initiate much interest of researchers to organic semiconducting materials. To date, PEDOT and its derivatives have been widely investigated; however, the design rules of molecular structure are just now being uncovered.

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