Conductive polymer/metal composites for interconnect of flexible devices

An interconnect of flexible and foldable devices based on advanced electronics requires high electrical conductivity, flexibility, adhesiveness on a plastic substrate, and efficient productivity. In this study, we investigated the applicability of a conductive polymer/metal composite to the interconnect of flexible devices. By combining an inkjet process and a photochemical reaction, micropatterns of a polypyrrole/silver composite were formed on flexible plastic substrates with an average linewidth of approximately 70μm within 10 min. The conductivity of the composite was improved to 6.0 × 10²Ω^-1.cm^-1. From these results, it is expected that the conducting polymer/metal composite can be applied to the microwiring of flexible electronic devices.