Field emission characteristics of graphene oxide coated CuO cathode

Author

Weiming Yu ; Dian Zhang ; Hang Huang ; Hailong Hu

Author_Institution

Coll. of Phys. & Inf. Eng., Fuzhou Univ., Fuzhou, China

fYear

2015

fDate

13-17 July 2015

Firstpage

128

Lastpage

129

Abstract

Graphene oxide (GO) coated CuO nanoswire arrays have been prepared on Cu substrate as field emission cathodes. CuO were grown on Cu substrates by a low-temperature hydrothermal process and the covering of GO sheets was carried out using an electrostatic self-assembly method. The field emission (FE) investigation of GO/CuO cathode showed a low turn-on field (4.5 V/ μ m) and high enhancement factor (1190) compared to those of pure CuO. The GO/CuO composite nanostructures are promising field emission cathodes in FE application.

Keywords

carbon compounds; cathodes; copper compounds; electron field emission; graphene; nanocomposites; nanofabrication; nanowires; self-assembly; vacuum microelectronics; CO-CuO; Cu; Cu substrate; composite nanostructures; electrostatic self-assembly method; enhancement factor; field emission cathodes; graphene oxide coated CuO cathode; graphene oxide coated CuO nanowire arrays; graphene oxide sheets; low-temperature hydrothermal process; turn-on field; Cathodes; Conductivity; Electrostatic self-assembly; Graphene; Nanowires; Scanning electron microscopy; Substrates; Field-emission; GO/CuO composite; electrostatic self-assembly;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference (IVNC), 2015 28th International

Conference_Location

Guangzhou

Print_ISBN

978-1-4673-9356-0

Type

conf

DOI

10.1109/IVNC.2015.7225557

Filename

7225557