Electron-beam lithography of cinnamate polythiophene films: conductive nanorods for electronic applications. Issue 26 (22nd June 2022)

• Record Type: Journal Article
• Authors: Bojanowski, N. Maximilian; Huck, Christian; Veith, Lisa; Strunk, Karl-Philipp; Bäuerle, Rainer; Melzer, Christian; Freudenberg, Jan; Wacker, Irene; Schröder, Rasmus R.; Tegeder, Petra; Bunz, Uwe H. F.
• Is Part Of: Chemical science. Volume 13:Issue 26(2022)
• Page Start: 7880
• Page End: 7885
• Publication Date: 2022-06-22
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2sc01867e
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : Electron beam lithography patterns selectively cinnamate-substituted polythiophene thin films via [2+2]-cycloaddition. A nanoscale organic field effect transistor is constructed using cross-linked and doped polythiophene as electrodes. Abstract : We report the electron-beam induced crosslinking of cinnamate-substituted polythiophene proceeding via excited state [2+2]-cycloaddition. Network formation in thin films is evidenced by infrared spectroscopy and film retention experiments. For the polymer studied herin, the electron-stimulated process appears to be superior to photo (UV)-induced crosslinking as it leads to less degradation. Electron beam lithography (EBL) patterns cinnamate-substituted polythiophene thin films on the nanoscale with a resolution of around 100 nm. As a proof of concept, we fabricated nanoscale organic transistors using doped and cross-linked P3ZT as contact fingers in thin film transistors.