Title :
A polycrystalline metallic molybdenum nanotips: Synthesis, electrical conductivity and field emission properties
Author :
Shen, Yan ; Deng, S.Z. ; Zhang, Yu ; Chen, Jun ; Xu, N.S.
Author_Institution :
State Key Lab. of Optoelectron. Mater. & Technol., Sun Yat-sen Univ., Guangzhou, China
Abstract :
Polycrystalline molybdenum nanotips can be grown on stainless steel substrates by simple thermal vapor deposition. Individual nanotip has very good conductivity of typical average value of about 4.99×104 Ω-1cm-1; ie, only an order of magnitude less than the value of bulk Mo. The field emission (FE) measurements exhibit good performance, i.e, turn-on field of ~1.6 MV/m and threshold field of ~3.1 MV/m, current density of ~120 mA/cm2 were recorded, and the current fluctuation of ±3.56% was observed when the current density is 50 mA/cm2.
Keywords :
current density; current fluctuations; electrical conductivity; field emission; molybdenum; nanofabrication; nanostructured materials; vacuum deposition; FE measurements; Mo; current density; current fluctuation; electrical conductivity; field emission measurements; field emission property; polycrystalline metallic molybdenum nanotip; simple thermal vapor deposition; stainless steel substrate; Conductivity; Conductivity measurement; Current density; Educational institutions; Scanning electron microscopy; Steel; Field emisison; electrical conductivity; molybdenum nanotip;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2012 25th International
Conference_Location :
Jeju
Print_ISBN :
978-1-4673-1983-6
Electronic_ISBN :
pending
DOI :
10.1109/IVNC.2012.6316975
