Title :
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
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;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2015 28th International
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4673-9356-0
DOI :
10.1109/IVNC.2015.7225557
