Figure 2: Printed PEDOT:PSS lines on the PVA modified substrate.
From: Flexible All-organic, All-solution Processed Thin Film Transistor Array with Ultrashort Channel
(a) The contact angle of PEDOT:PSS on PET surface is 107°. Line printing on the substrate results in isolated islands due to the small solid surface energy. After PVA modification, PEDOT:PSS contact angle becomes 38°. A continuous line is formed by line printing PEDOT:PSS. (b) The AFM picture shows the smooth PVA-modified PET surface. (c) The three-dimensional white light interference microscopic picture and the cross-sectional profile of the printed PEODT:PSS line on PVA-modified PET. (d) Sequential picture of PEDOT:PSS drying process on PVA-modified PET. tf is the total drying time.
