Semitransparent Gold-Meshed Electrode Fabricated by Transfer Printing Using Self-Organized Microporous Polymer Mold

A novel process for the fabrication of flexible, semitransparent, and meshed gold electrodes on a polyethylene terephthalate (PET) substrate utilizing transfer printing from a self-organized microporous polycarbonate mold is described. The mold, with honeycomb structures, was fabricated by casting a chloroform solution of poly(bisphenol A carbonate) and polyacrylamide to form selforganized arrays of water bubbles and drying them. The meshed Au electrode was transferred on a PET substrate coated with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) using the Au-coated mold. The measured transmittance of the electrode at the photon wavelength of 500 nm was 34%, and the sheet resistance was 3 Omega/square. Fabricated Au mesh electrode showed a much greater flexibility than the ITO electrode, and it can be bent to 7 5 mm radius of the curvature with 10% reduction of the conductance.