Synthesis a flexible conductive film of poly 3,4-ethylenedioxythiophene polystyrene sulfonate (PEDOT: PSS) using spray pyrolysis method

Abstract

Popularity of conducting polymers are become widely known and researches for practical application also has been done. In order to developed a continuous process for industrial scale, we have proposed a spray pyrolysis method to synthesis a flexible conductive film of Poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) (PEDOT:PSS) on poly(ethylene terephthalate) (PET) and annealed at different temperatures and spray distances. The optimum condition that resulting a best morphology was anneal at 90o C and 20 cm distance with electrical conductivity 4.5 S/cm. It was found that annealing at temperature higher than 90o C will resulting a stress to a film and formed crack due to a different thermal expansion, while at the distance higher than 20 cm resulting a loss of PEDOT:PSS droplets. IR spectra shows that there is no any sign of PEDOT:PSS degradation even at 110o C. SEM analysis also show that the thickness is well distributed and there is no any sign of crack formed.