Different colloidal particle formation process between conjugated polymer and unmodified C 60 in preparation of suspension for electrophoretic deposition by reprecipitation method

Abstract Electrophoretic deposition provides material-efficient film formation on large area electrodes. In this study, it has been found that there is a significant difference in the colloidal particle formation process between a thiophene-based copolymer poly(3-octylthiophene- 2,5-diyl -co- 3-decyloxythiophene-2,5-diyl) (POT -co- DOT) and C 60 in preparation of suspension for electrophoretic deposition by reprecipitation method. This difference is attributed to the difference between low molecular weight materials with specific molecular weight and polymers with molecular weight distribution. The composition of POT -co- DOT:C 60 composite film by electrophoretic deposition has also been estimated.