Mono-sized semiconducting carbon nanotubes formed in 1-nm-sized channels of aluminophosphate single crystal

Citation
Zk. Tang et al., Mono-sized semiconducting carbon nanotubes formed in 1-nm-sized channels of aluminophosphate single crystal, J KOR PHYS, 34, 1999, pp. S7-S11
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN journal
0374-4884 → ACNP
Volume
34
Year of publication
1999
Supplement
S
Pages
S7 - S11
Database
ISI
SICI code
0374-4884(199904)34:<S7:MSCNFI>2.0.ZU;2-W
Abstract
Carbon nanotube materials can now be produced in macroscopic quantities. Ho wever, the raw material has a disordered structure and unsorted size, which restrict investigations of both the properties and applications of the nan otubes. In this paper, an alternative approach to the synthesis of mono-siz ed and parallel-aligned single wall carbon nanotubes (SWCNs) is reported. T he SWCNs are formed in l-nm-sized channels of aluminophosphate zeolite crys tallites by pyrolysis of tripropylamine molecules. As verified by tunnel el ectron microscopy and micro-Raman scattering, the SWNT is of zigzag structu re. Electrical transport properties of the SWNT are measured in the tempera ture range of 0.3 K similar to 300 K. The temperature-dependent de conducti vity shows that the SWNT is an intrinsic semiconductor with a narrow band-g ap of 52 meV. The well-aligned and mono-sized SWCNs allow us to make more c ontrolled characterization as well as open a door to potential nano-technol ogical application for the novel electronic nanotube system.