Ultra-Low-Voltage Schottky-Barrier Field-Enhanced Electron Emission From Gold Nanowires Electrochemically Grown in Modified Porous Alumina Templates

Author

Banan-Sadeghian, Ramin ; Badilescu, Simona ; Djaoued, Yahia ; Balaji, Subramanian ; Truong, Vo-Van ; Kahrizi, Mojtaba

Author_Institution

Concordia Univ., Montreal

Volume

29

Issue

4

fYear

2008

fDate

4/1/2008 12:00:00 AM

Firstpage

312

Lastpage

314

Abstract

Superior field emission (FE) action has been observed from a tailored array of gold nanowires (AuNWs) grown in porous anodic alumina (PAA) templates. The turn-on voltage was found to be 0.2 V, which is far less than the values reported earlier for diamond-coated cathodes and carbon nanotubes (CNTs). Furthermore, the FE current was unaffected by the ambient gas pressure. Such a low-voltage FE is attributed here to the formation of a Schottky barrier at the interface of gold and amorphous alumina scales that remain on the AuNWs.

Keywords

Schottky barriers; carbon nanotubes; field emission; nanowires; porous semiconductors; ambient gas pressure; amorphous alumina scale; carbon nanotubes; diamond-coated cathode; field-enhanced electron emission; gold nanowires; porous alumina template; porous anodic alumina template; superior field emission; turn-on voltage; ultra-low-voltage Schottky barrier; Amorphous materials; Carbon nanotubes; Cathodes; Electron emission; Gold; Iron; Nanostructures; Nanowires; Thermal conductivity; Voltage; Field emission (FE); Schottky-barrier field enhancement; gold nanowires (AuNW);

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2008.917114

Filename

4475263