公开(公告)号：US20220149286A1

公开(公告)日：2022-05-12

申请号：US17436221

申请日：2020-02-06

Applicant: TORAY INDUSTRIES, INC.

Inventor： Takayoshi HIRAI ,  Hidekazu NISHINO ,  Seiichiro MURASE

IPC: H01L51/00 ,  C01B32/174 ,  C08F292/00 ,  H01L51/05

Abstract: A carbon nanotube composition capable of producing an FET having improved mobility is provided. The carbon nanotube composition of the present invention is a halogen-free carbon nanotube composition comprising a carbon nanotube having the following features (1) and (2).
(1) A dispersion liquid obtained by dispersing the carbon nanotube in a solution containing a cholic acid derivative and water has, in the absorption spectrum in the wavelength range of 300 nm to 1100 nm measured by an ultraviolet/visible/near-infrared spectroscopy, the minimum absorbance in the range of 600 nm to 700 nm and the maximum absorbance in the range of 900 nm to 1050 nm; wherein the ratio of the minimum absorbance and the maximum absorbance is 2.5 or more and 4.5 or less; and (2) the dispersion liquid has the height ratio of the G-band and the D-band (value of (D/G)×100) of 3.33 or less, as measured by a Raman spectrophotometer, using light having a wavelength of 532 nm as excitation light.