Open AccessTemperature dependence of field emission of nano-diamond
Author(s) -
Yanning Yang,
Zhiyong Zhang,
Fuchun Zhang,
Weihu Zhang,
Junfeng Yan,
Chunxue Zhai
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.2666
Subject(s) - field electron emission , diamond , materials science , electric field , substrate (aquarium) , current (fluid) , field (mathematics) , nano , titanium , condensed matter physics , nanotechnology , composite material , thermodynamics , physics , electron , metallurgy , mathematics , pure mathematics , oceanography , quantum mechanics , geology
The field emission characteristics of nano-diamond deposited on titanium substrate at various temperatures are studied. It was found that the emission current increases with increase of temperature and electric fieldwhile the stability of the emission current basically does not change. The field emission characteristic deviates from classic Fowler-Nordheim theory. The mechanism of the emission current at different temperatures is analyzed. It may be due to the combined action of scale effect of the nano-diamond and masses of hot carrier produced by nano-diamonds in external electric field. In additionthe research indicates that larger current can be generated after titanium substrates being heated up to a certain degree in external electric field, which can have large effect on field emissionshowing that the titanium substrate has a certain degree of temperature sensitivity and voltage sensitivity.