The effects of adsorbates on the field emission properties of multiwall carbon nanotubes

Author

Yeong, K.S. ; Thong, J.T.L.

Author_Institution

Fac. of Eng., Nat. Univ. of Singapore, Singapore

fYear

2003

fDate

28-30 May 2003

Firstpage

126

Lastpage

127

Abstract

In this paper, we study about the effects of adsorbates on the field emission current and light emission form field emitting nanotubes at high emission current. The multiwall carbon nanotube films are grown on 5×5 mm² Ta (100 nm) coated silicon wafers through thermal CVD process. Field emission measurements were carried out using a planar diode configuration with a copper plate as the cathode base and ITO coated glass as the anode. The increase in field emission current is due to enhanced tunneling probability due to the presence of adsorbates.

Keywords

CVD coatings; adsorbed layers; carbon nanotubes; desorption; electron field emission; luminescence; thin films; 100 nm; C; Cu; ITO coated glass; InSnO-SiO2Jk; Ta coated silicon wafers; Ta-Si; anode; cathode; chemical vapour deposition process; copper plate; enhanced tunneling probability; field emission current; field emission measurements; light emission form field emitting nanotubes; multiwall carbon nanotube films; planar diode configuration; thermal CVD process; Anodes; Carbon nanotubes; Cathodes; Copper; Diodes; Glass; Indium tin oxide; Semiconductor films; Silicon; Tunneling;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics, 2003 4th IEEE International Conference on

Print_ISBN

0-7803-7699-4

Type

conf

DOI

10.1109/IVEC.2003.1286114

Filename

1286114