Effect of solvents on electrical properties of PEDOT:PSS/n-Si heterojunction diodes

Effect of organic polar solvents on the morphology and electrical properties of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) films have been investigated. PEDOT:PSS has been deposited on n-type silicon wafer using spin coating process. The best result was obtained with co-solvents. The conductivity increased from 0.16 S/cm for pristine to 30 S/cm for co-solvents. All prepared films are highly transparent and fabricated heterojunction diodes show rectifying behavior.