Highly Conductive and Transparent PEDOT/PSS Thin Films with Large Area Prepared by Bar-coating Method

摘要

We report on optimization of bar coating method for preparation of PEDOT/PSS thin films with large area on poly (ethylene terephthalate) (PET) substrates, by investigating various coating parameters in terms of sheet resistance (R_s) and transparency (T). As a result, we have found that the addition of 1 wt% Capstone FS-30, 7 wt% ethylene glycol (EG), and a motor rotation speed of 100.8 rpm, as well as a heat temperature of 120 ℃ is the optimum coating condition to obtain high-performance PEDOT/PSS thin films with large area whose sheet resistance (R_s) and transmittance at 550 nm (T) were 230 Ω sq~(-1) and 84%, respectively.