Fabrication of organic thin film transistors with the nano-groove al gate electrodes by using UV nano imprint technology

► The OTFTs with the nano-groove Al gate electrodes were fabricated by UV nano imprint technology. ► The nano-groove Al gate electrodes were fabricated by UV nano imprint and reactive ion etching. ► The molecular orientations of pentacene were improved by nano-groove Al structures. ► The OTFTs with nano-groove Al gate electrodes have much better performances than those with the single ones.