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Fabrication and Properties of Ag-nanoparticles Embedded Amorphous Carbon Nanowire/CNT Heterostructures

Author(s): Chen Ke-fan | Deng Jian-hua | Zhao Fei | Cheng Guo-an | Zheng Rui-ting

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 5;
Issue: 9;
Start page: 1449;
Date: 2010;
Original page

Keywords: Carbon nanotube | Nanowire | Ion implantation | Field emission

Abstract Carbon nanotubes were subjected to doping with an energetic Ag ion beam, and the carbon nanotubes on the top of the array were transformed into amorphous carbon nanowires with embedded Ag-nanoparticles. The field emission characteristics of these nanowires were investigated. The minimum turn-on and threshold fields were 0.68 and 1.09 V/μm, respectively, which were lower than those of the as-grown carbon nanotubes. This was probably because Ag-nanoparticles embedded in the carbon nanowires reduced the effective work function from 4.59 to 4.23 eV. Large doping amounts produced serious structural damage at the top of the nanowires and impaired the field emission characteristics.

Tango Jona
Tangokurs Rapperswil-Jona

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