title: Titania-assisted dispersion of carboxylated single-walled carbon nanotubes in a ZnO sol for transparent conducting hybrid films.
abstract: We report a facile chemical route for stabilizing a dispersion of carboxylated single-walled carbon nanotubes (SWCNTs) in a ZnO sol. The dispersion is stabilized via capping of the carboxyl groups on the SWCNT surface by a titania layer, which was confirmed by Fourier transform infrared spectroscopy and transmission electron microscopy. We also demonstrate that the conductivity of the films prepared from the SWCNT/TiO(x)/ZnO sol is dramatically enhanced by thermal treatment and that the thermal stability of the hybridized films with the ZnO sol is notably improved relative to that of a pristine SWCNT film. The structural and chemical changes of the fabricated films were characterized by Raman spectroscopy. As one application, it was presented that thermally treated SWCNT/TiO(x)/ZnO hybrid thin film sensors showed hydrogen sensing characteristics even at room temperature.
authors.affiliation: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute, Changwon 641-120, Korea. jthan@keri.re.kr
authors.forename: Joong Tark
authors.initials: JT
authors.lastname: Han
authors.forename: Bo Gyeong
authors.initials: BG
authors.lastname: Kim
authors.forename: Myung
authors.initials: M
authors.lastname: Yang
authors.forename: Jun Suk
authors.initials: JS
authors.lastname: Kim
authors.forename: Hee Jin
authors.initials: HJ
authors.lastname: Jeong
authors.forename: Seung Yol
authors.initials: SY
authors.lastname: Jeong
authors.forename: Seong-Hyeon
authors.initials: SH
authors.lastname: Hong
authors.forename: Geon-Woong
authors.initials: GW
authors.lastname: Lee