New life for PEDOT
The “staple food” of the organic electronics business remains the PEDOT semiconductor/ conductor and it is now being used for surprising reasons. In 2006, Menippos sold 700,000 interactive football tokens that employed a 16 bit screen printed pattern PEDOT. They did not use silver ink because silver can be a biocide and children may chew these paper products. They also wanted the RFID to function even after crushing and folding. Arjo Wiggins announced interactive paper with a hidden PEDOT conductive pattern and here they chose PEDOT because its blue colour was easier to obscure than a metal pattern. Nevertheless, the electrodes, antennas and interconnects in most so-called organic electronic and electrical products remain metallic because the organic industry still fails to match the cost/ conductivity figures of printed inks, particularly silver.