Preparation and Field Emission Properties of Carbon Nanotubes Grown on Novel Porous Pyrolyzed Polyaniline Substrate

Author

Wang, Zhe ; Huang, Yudong ; Xuduo Bai ; Chen, Xu

Author_Institution

Dept. of Appl. Chem., Harbin Inst. of Technol.

fYear

2006

fDate

18-21 Jan. 2006

Firstpage

687

Lastpage

690

Abstract

The pyrolyzed polyaniline (PANI) consisted of amorphous hard carbon full of pores. Carbon nanotubes (CNTs) grew on pyrolyzed PANI substrate with the rough surface containing some pores using a low pressure chemistry vapor deposition (LPCVD) method with xylene as a carbon precursor source and Fe/SiO₂ nanoparticles as catalyst. The pore extrusion and the deposited carbon particles adhesion of CNTs growing inside the pore of pyrolyzed PANI make CNTs mount to the substrate tightly. The field emission properties of production were investigated: the turn-on field is 1.6-2.6V/mum, the threshold field is 5.3-8.8V/mum and the enhancement factor is 4540-7200

Keywords

adhesion; carbon nanotubes; catalysts; chemical vapour deposition; extrusion; field emission; nanoparticles; pyrolysis; rough surfaces; C; Fe-SiO₂; LPCVD technique; PANI substrate; adhesion; carbon nanotubes; catalysts; extrusion; field emission; low pressure chemistry vapor deposition; nanoparticles; porous substrate; pyrolyzed polyaniline; rough surfaces; xylene; Adhesives; Amorphous materials; Carbon dioxide; Carbon nanotubes; Chemical vapor deposition; Chemistry; Iron; Nanoparticles; Rough surfaces; Surface roughness; Carbon nanotube; Field emission; Pyrolyzed polyanilin substrate;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on

Conference_Location

Zhuhai

Print_ISBN

1-4244-0139-9

Electronic_ISBN

1-4244-0140-2

Type

conf

DOI

10.1109/NEMS.2006.334873

Filename

4135046