Title :
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
fDate :
4/1/2008 12:00:00 AM
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);
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2008.917114
