Inkjet-Printed Single-Wall Carbon Nanotube Thin-Film Transistors with Fluorinated Polymer Dielectrics

Abstract

In this study, we introduce the organic thin-film transistors (OTFTs) employing inkjet-printed single-wall carbon nanotubes (SW-CNTs) and fluorinated acryl copolymer as a semiconductor and gate dielectric, respectively. The fluorinated acryl copolymers have the altered surface properties (such as surface energy, surface roughness, and surface potential) by changing the molar ratio of fluorinated monomer to the copolymer. Higher fluorine content led to the increase in the surface potential and the decrease in the surface energy and surface roughness. In particular, the fluorine content in the polymer surface could change the wettability and areal density of the inkjet-printed SW-CNTs. Therefore, the optimized fluorine content could provide best electrical performance with the OTFTs employing the printed SW-CNTs.