This paper describes a sequential doping/dedoping method for the enhancement of thermoelectric properties of organic semiconductor that also permits the fabrication of transparent and flexible thermoelectric nanofilms. This method allows a precise control of oxidation level without deterioration of the film surface defects.

The thermoelectric performance of poly(3,4-ethylenedioxythiophene) complexed with a poly(4-styrenesulfonic acid) (PEDOT:PSS) film was enhanced by a three-step process.

No abstract

We investigated the spinning speed dependent surface composition for TE performance with PEDOT:PSS films. The Seebeck coefficient and electrical conductivity of PEDOT:PSS film decrease as the spinning speed elevates. The thicker nanofilm exhibited the best properties in terms of the electrical conductivity and Seebeck coefficient.