Field emission current noise analysis of carbon based materials

Author

More, Mahendra A. ; Kashid, Ranjit V. ; Patil, Sandip S. ; Shinde, Deodatta R. ; Joag, Dilip S.

Author_Institution

Dept. of Phys., Univ. of Pune, Pune, India

fYear

2012

fDate

9-13 July 2012

Firstpage

1

Lastpage

2

Abstract

Field emission current noise analysis of carbon based materials such as multiwalled carbon nanotubes, undoped graphene, nitrogen doped graphene, boron doped graphene, and polyaniline nanotubes is carried out at base pressure of ~1× 10^-8 mbar. All the field emitters exhibited `step´ and `spike´ like fluctuations in the field emission current. The power spectra revealed that the noise is 1/f^α type, with α ~ 0.8 for all emitters. The origin of `step´ and `spike´ like fluctuations is explained on the basis of various processes such as adsorption/desorption, migration of residual gas atoms/molecules and ion bombardment induced effects on the emitter surface.

Keywords

carbon nanotubes; field emission; adsorption-desorption; boron doped graphene; carbon based materials; emitter surface; field emission current noise analysis; field emitters; ion bombardment induced effects; multiwalled carbon nanotubes; nitrogen doped graphene; polyaniline nanotubes; residual gas atom-molecule migration; spike like fluctuations; undoped graphene; Carbon dioxide; Fluctuations; Nanotubes; Nitrogen; Noise; CNTs; Polyaniline; field emission; graphene; noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference (IVNC), 2012 25th International

Conference_Location

Jeju

ISSN

pending

Print_ISBN

978-1-4673-1983-6

Electronic_ISBN

pending

Type

conf

DOI

10.1109/IVNC.2012.6316832

Filename

6316832