Novel method of growing ultrananocrystalline diamond tips and their field emission property study.
Different forms of diamond have been shown to have qualities as field emission sources. As a consequence, much effort has been focused on both the synthesis of diamond nanostructures to increase the field enhancement factor and understanding the emission mechanism in these nominally insulating materials. In our recent study, we have grown ultrananocrystalline diamond (UNCD) coated nanocrystalline diamond (NCD) tips on NCD films for field emitters. The films were characterized using field emission scanning electron microscopy and Raman spectroscopy to identify the quality of the films. The fabricated different sizes of pyramid tips and their field emission properties are reported. It has been observed that with increase in tip size, the turn on voltage also increases.
Joseph
P T
PT
Department of Materials Science and Engineering, National Tsing-Hua University, Hsin-Chu, Taiwan 300, R. O. China.
Chen
Li-Ju
LJ
Tai
Nyan-Hwa
NH
Palnitkar
Umesh
U
Cheng
Hsiu-Fung
HF
Lin
I-Nan
IN