Title :
Novel field emission from graphene sheets supported by CNTs arrays
Author :
Ke Qu ; Xiaobing Zhang ; Yan Zhang ; Chi Li ; Cole, M.T. ; Ning Zhao ; Chenyan Shi ; Shuyi Ding ; Kai Ying ; Wei Lei ; Baoping Wang ; Milne, W.I.
Author_Institution :
Display Res. Centre, Southeast Univ., Nanjing, China
Abstract :
A good quality graphene is transferred onto honeycomb-like CNTs arrays with inner supporting CNTs. The efficient field emission is demonstrated due to a high aspect ratio protrusions and graphene crack edges. A high efficient current density about 1.2 mA/cm2 at threshold electric field of 7.8 Y/μm with a turn-on electric field of 1.8 Y/μm at the current density of 10 μA/cm2 is observed due to high localized electric field. Stable field emission is tested in a vacuum chamber. The results are of significance to the development of Graphene based field emitters.
Keywords :
carbon nanotubes; current density; electron field emission; graphene; C; CNT arrays; carbon nanotube array; current density; field emission; graphene based field emitters; graphene crack edges; graphene sheets; localized electric field; threshold electric field; vacuum chamber; Anodes; Cathodes; Current density; Educational institutions; Electric fields; Graphene; Materials; carbon nanotubes; field emission; graphene;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International
Conference_Location :
Paris
Print_ISBN :
978-1-4673-5976-4
DOI :
10.1109/IVEC.2013.6570956
