title: Bulk synthesis of large diameter semiconducting single-walled carbon nanotubes by oxygen-assisted floating catalyst chemical vapor deposition.
abstract: Semiconducting single-walled carbon nanotubes (s-SWCNTs) with a mean diameter of 1.6 nm were synthesized on a large scale by using oxygen-assisted floating catalyst chemical vapor deposition. The oxygen introduced can selectively etch metallic SWCNTs in situ, while the sulfur growth promoter functions in promoting the growth of SWCNTs with a large diameter. The electronic properties of the SWCNTs were characterized by laser Raman spectroscopy, absorption spectroscopy, and field effect transistor measurements. It was found that the content of s-SWCNTs in the samples was highly sensitive to the amount of oxygen introduced. Under optimum synthesis conditions, enriched s-SWCNTs can be obtained in milligram quantities per batch.
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China.
authors.forename: Bing
authors.initials: B
authors.lastname: Yu
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.forename: Peng-Xiang
authors.initials: PX
authors.lastname: Hou
authors.forename: Ying
authors.initials: Y
authors.lastname: Tian
authors.forename: Shisheng
authors.initials: S
authors.lastname: Li
authors.forename: Bilu
authors.initials: B
authors.lastname: Liu
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.forename: Esko I
authors.initials: EI
authors.lastname: Kauppinen
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Cheng