title: Efficient synthesis of individual single-walled carbon nanotube by water-based catalyst with poly(vinylpyrrolidone).
abstract: Individual single-walled carbon nanotubes (SWCNTs) were synthesized on the patterned water-soluble catalyst by thermal chemical vapor deposition. The individual SWCNTs were obtained by introducing polyvinylpyrrolidone (PVP) as a dispersant. The number of SWCNTs between two electrodes were approximately 1-2 with an average diameter of about 1.7 nm and a yield of forming electrodes of nearly 70%. The PVP played an important role in dispersing catalysts and suppressing the active sites to limit the number of SWCNTs during synthesis, which is a critical condition for fabrication of field effect transistors (FETs). The measured I-V characteristics of the over layer-deposited electrodes revealed a clear gating effect in large portion, in good agreement with Raman observations in several excitation energies. The patterning procedure, catalyst preparation, and growth condition for fabrication of the SWCNT-FET were further discussed.
authors.affiliation: Department of Physics, Institute of Basic Science, Sungkyunkwan University Suwon 440-746, Republic of Korea.
authors.forename: Seung Yol
authors.initials: SY
authors.lastname: Jeong
authors.forename: Sang Hyun
authors.initials: SH
authors.lastname: Jeon
authors.forename: Gang Hee
authors.initials: GH
authors.lastname: Han
authors.forename: Kay Hyeok
authors.initials: KH
authors.lastname: An
authors.forename: Dong Jae
authors.initials: DJ
authors.lastname: Bae
authors.forename: Seuong Chu
authors.initials: SC
authors.lastname: Lim
authors.forename: Ha Ryong
authors.initials: HR
authors.lastname: Hwang
authors.forename: Chang Soo
authors.initials: CS
authors.lastname: Han
authors.forename: Minhee
authors.initials: M
authors.lastname: Yun
authors.forename: Young Hee
authors.initials: YH
authors.lastname: Lee