Title :
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.
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;
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
DOI :
10.1109/NEMS.2006.334873
