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

fYear

2011

fDate

15-18 Aug. 2011

Firstpage

1000

Lastpage

1005

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on

Conference_Location

Portland, OR

ISSN

1944-9399

Print_ISBN

978-1-4577-1514-3

Electronic_ISBN

1944-9399

Type

conf

DOI

10.1109/NANO.2011.6144627

Filename

6144627