chapter  9
54 Pages

PEDOT:PSS

One of the reasons why poly(3,4-ethylenedioxythiophene) (PEDOT) has become a successful conductive polymer is the availability as a polymer dispersion. In combination with poly(styrenesulfonic acid) (PSS) as a counterion, a polyelectrolyte complex (PEC) can be prepared that forms a stable dispersion, which is producible on an industrial scale and can be used in many deposition techniques. To understand the function of PSS and the requirements for the formation of a stable PEC, this chapter will start with a general view on polyelectrolyte complexes. This is followed by a section on the synthesis and properties of PEDOT:PSS dispersions, the properties of PEDOT:PSS lms, and the function of conductivity enhancement agents.