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

作者：Sun JP^*; Zhang ZX; Hou SM; Zhao XY; Shi ZJ; Gu ZN; Liu WM; Xue ZQ

来源：Acta Physica Sinica, 2001, 50(9): 1805-1809.

• electron field emission
• field emission microscopy
• single-walled carbon nanotubes
• work function

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 temperatures. Work function of the SWCNT's decreases as the temperature of desorption goes up. After heat treatment at 1000 degreesC, the SWCNT's exhibits the lowest work function and their electron field emission pattern also shows a fine structure. As the temperature for thermodesorption is raised further, the SWCNT's field emission power deteriorates and finally collapse of SWCNT's occurs.

• 出版日期2001-9
• 单位北京大学