Improved Field Emission Properties of Ag-Decorated Multi-Walled Carbon Nanotubes

Author

Lin, Z.D. ; Sheng-Joue Young ; Chih-Hung Hsiao ; Shoou-Jinn Chang ; Huang, C.S.

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

25

Issue

11

fYear

2013

fDate

1-Jun-13

Firstpage

1017

Lastpage

1019

Abstract

A field emission is fulfilled by utilizing the vertically aligned carbon nanotubes (CNTs) decorating their external surface with Ag-nanoparticles. It is found that the average length and diameter of the CNTs are ~ 4.52 μm and 45 nm, respectively. We also coated Ag nanoparticles ~ 5 nm onto the nanotube surfaces and fabricated CNTs for field emission. The turn-on field and current density of the CNTs clearly indicate that the field emission of the coated-Ag is enhanced considerably. In this letter, the decoration of Ag nanoparticles effectively decreased the effective work function (Φ_eff) and turn-on field (Eto).

Keywords

carbon nanotubes; current density; field emission; nanofabrication; nanoparticles; silver; work function; Ag-C; Ag-decorated multiwalled carbon nanotubes; CNT; coated nanoparticles; current density; field emission properties; nanotube surface; turn-on field; vertically aligned carbon nanotubes; work function; Carbon nanotubes; field emission; work function;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2258148

Filename

6504473