Enhanced Carbon Nanotube Field Emitter With Adsorbed Au Nanoparticles

Author

Sheng-Joue Young ; Zheng-Dong Lin ; Chih-Hung Hsiao ; Chien-Sheng Huang

Author_Institution

Dept. of Electron. Eng., Nat. Formosa Univ., Yunlin, Taiwan

Volume

62

Issue

12

fYear

2015

Firstpage

4301

Lastpage

4304

Abstract

Field emission was achieved utilizing vertically aligned carbon nanotubes (CNTs), whose external surface was decorated with Au nanoparticles (NPs). It was found that the average length and diameter of the CNTs were ~4.52 μm and 45 nm, respectively. Au NPs (around 5 nm) were coated onto CNT surfaces for field emission. The turn-ON field and current density of the Au-coated CNTs clearly indicate that the Au NPs considerably enhanced field emission. Au NP decoration effectively decreased the work function and turn-ON field.

Keywords

carbon nanotubes; current density; field emission; gold; nanoparticles; Au; CNT surfaces; adsorbed Au nanoparticles; current density; enhanced carbon nanotube field emitter; external surface; field emission; size 4.52 mum; size 45 nm; turn-ON field; vertically aligned carbon nanotubes; work function; Carbon nanotubes; Current density; Electron emission; Gold; Nanoparticles; Surface treatment; Au nanoparticles (NPs); carbon nanotubes (CNTs); field emission; work function; work function.;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2015.2495227

Filename

7321011