I am trying to coat PEDOT:PSS on plastics but it is very difficult to put the solution in plastics (thickness vs binder). What should I add to this part?
The conductivity of PEDOT:PSS can be significantly improved by a post-treatment with various compounds, such as ethylene glycol, dimethyl sulfoxide (DMSO), salts, zwitterions, cosolvents, acids, alcohols, phenol, geminal diols and amphiphilic fluoro-compounds. This conductivity is comparable to that of Indium tin oxide (ITO), the popular transparent electrode material, and it can triple that of ITO after a network of carbon nanotubes and silver nanowires is embedded into PEDOT:PSS and used for flexible organic devices
You don't need any binder to coat a PEDOT:PSS on plastic because of the high adhesion of PEDOT:PSS. PEDOT electrode presented considerable discharge and charge capacity at all current densities. These results shows that PEDOT:PSS acts as a redox reaction matrix and conducting binder in the air electrode. Moreover, after cycling, the accumulation of reaction products due to side reaction in the electrode was significantly reduced through the use of PEDOT:PSS. This implies that PEDOT:PSS coating layer can suppress the undesirable side reactions between the carbon and electrolyte (and/or Li2O2), which causes enhanced Li-air cell cyclic performance. But you can coat PEDOT:PSS on plastic by Ultrasonic Substrate Vibration Post Treatment.