Direct printing of organic transistors with 2μm channel resolution

Abstract

Organic materials offer the possibility of printing flexible electronic devices with large area coverage in a printing press. Usually this vision conflicts with the requirement of high-resolution feature formation. The authors demonstrate here that thin film transistors with $2\mu \mathrm{m}$ channel length can be printed using a reel-to-reel compatible process. The development of a dry printing method used in combination with a high-resolution, solvent resistant plates, and sintered metallic nanoinks enables high-resolution printing of functional liquid inks. In addition, dry printing allows for the sequential printing of solid films overcoming the severe solvent incompatibility issues faced by standard printing techniques.