Title :
Printing technology and advantage of purified semiconducting carbon nanotubes for thin film transistor fabrication on plastic films
Author :
Numata, Hideaki ; Ihara, Kazuki ; Saito, Takeshi ; Nihey, Fumiyuki
Author_Institution :
Technol. Res. Assoc. for Single Wall Carbon Nanotubes (TASC), Tsukuba, Japan
Abstract :
Fabrication technology for printed carbon nanotube (CNT) transistors was developed. All electrodes, insulators, and CNT channels were directly printed and CNT thin film transistors (TFTs) were fabricated on plastic films without additional patterning processes. In this fabrication, surface free energy was controlled and a mechanism for adsorbing CNTs was applied to form a random network channel. Purified semiconducting CNT ink was used and the TFT characteristics clearly demonstrated the advantages of the ink. This increased the on-current of the printed CNT-TFT without deterioration in the on/off ratio. A large field-effect mobility of 3.6 cm2/Vs was obtained for the printed CNT-TFT with an on/off ratio of about 1,000.
Keywords :
carbon nanotubes; nanotube devices; printing; thin film transistors; plastic films; printed carbon nanotube transistors; printing technology; purified semiconducting carbon nanotubes; surface free energy; thin film transistor fabrication; Electrodes; Fabrication; Ink; Logic gates; Printing; Surface treatment; Thin film transistors; carbon nanotube; printable electronics; thin film transistor;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144627
