A study of field emission of single-walled carbon nanotubes using field emission microscopy

Authors
Sun, JP Zhang, ZX Hou, SM Zhao, XY Shi, ZJ Gu, ZN Liu, WM Xue, ZQ
Citation
Jp. Sun et al., A study of field emission of single-walled carbon nanotubes using field emission microscopy, ACT PHY C E, 50(9), 2001, pp. 1805-1809
Citations number
16
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SINICA
ISSN journal
10003290 → ACNP
Volume
50
Issue
9
Year of publication
2001
Pages
1805 - 1809
Database
ISI
SICI code
1000-3290(200109)50:9<1805:ASOFEO>2.0.ZU;2-P
Abstract
Using Field Emission Microscopy ( FEM), the electron field emission from a bundle of single-walled carbon nanotubes (SWCNT's) was studied under vacuum better than 4.0 X 10(-7) Pa after being thermo-desorbed at different tempe ratures. Work function of the SWCNT's decreases as the temperature of desor ption goes up. After heat treatment at 1000 degreesC, the SWCNT's exhibits the lowest work function and their electron field emission pattern also sho ws a fine structure. As the temperature for thermodesorption is raised furt her, the SWCNT's field emission power deteriorates and finally collapse of SWCNT's occurs.