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长春光学精密机械与物... [2]
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材料科学与物理化学 [1]
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Field emission cathode based on three-dimensional framework carbon and its operation under the driving of a triboelectric nanogenerator
期刊论文
OAI收割
Nano Energy, 2018, 卷号: 49, 期号: 0, 页码: 308-315
作者:
Chen JT(陈江涛)
;
Yang BJ(杨兵军)
;
Yu Dian Lim
;
Su LJ(苏利军)
;
Yang J(杨娟)
  |  
收藏
  |  
浏览/下载:50/0
  |  
提交时间:2018/05/04
Field Emission
Cold Cathode
Three-dimensional Framework Carbon
Triboelectric Nanogenerator
Thin film micro-scaled cold cathode structures of undoped and Si-doped AlN grown on SiC substrate with low turn-on voltage
期刊论文
OAI收割
CHINESE PHYSICS B, 2015, 卷号: 24, 期号: 5, 页码: 5
作者:
Shi, M
;
Chen, P
;
Zhao, DG
;
Jiang, DS
;
Zheng, J
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2015/12/31
AlN
field emission
cold cathode
negative electron affinity
The synthesis and field emission property of carbon nanotubes on carbon fibers substrate (EI CONFERENCE)
会议论文
OAI收割
Technical Digest of the 20th International Vacuum Nanoelectronics Conference, IVNC 07, July 8, 2008 - July 12, 2008, Chicago, IL, United states
Leyong Z.
;
Weibiao W.
;
Jingqiu L.
;
Yuxue X.
;
Da L.
;
Song C.
;
Haifeng Z.
收藏
  |  
浏览/下载:33/0
  |  
提交时间:2013/03/25
Using ferrocene as catalyst precursor
C2H2 as carbon source
carbon nanotubes (CNTs) with uniform density were synthesized on carbon fibers substrate by floating catalyst method. The morphology and microstructure were characterized by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM). The observation showed that the length of CNTs is about 2 m
the average space between adjacent CNTs is about 300 nm and the diameter of CNT is about 45 nm. The less dense "short and stubby" aligned CNTs films should have good electron field emission characteristics. The results of field emission showed that the emission current of CNTs/carbon fibers was 5 A at the field of 2.5 V/m
and the emission current can be 280 A with a field of 7 V/m (the specimen area is 0.25 cm2 and the distance between cathode and anode is 200 m). The calculation based on the F-N plot indicated that the field enhancement factor of CNTs tip is 499122. Using the conductivity and chemical stability of carbon fibers and the uniform and sparse density distribution of CNTs on carbon fibers substrate
the tip predominance of carbon nanotubes can be exerted
and simultaneously the effect of screening effects between adjacent carbon nanotubes on the field emission performance can also be effectively decreased. The CNTs synthesized on carbon fibers substrate has many predominances for the fabrication of cold cathode devices. For example
using the removability of carbon fibers
the cathode of CNTs/carbon fibers can be arbitrarily moved
enlaced or combined to form different patterns
and the cathode of CNTs/carbon fibers can be also fabricated in large size. Therefore
CNTs/carbon fibers may have potential application in field emission displays.
Fabrication and electron emission of carbon microtubes (EI CONFERENCE)
会议论文
OAI收割
Technical Digest of the 18th International Vacuum Nanoelectronics Conference, IVNC 2005, July 10, 2005 - July 14, 2005, Oxford, United kingdom
作者:
Liu L.
;
Liu L.
;
Wang W.
;
Wang W.
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浏览/下载:40/0
  |  
提交时间:2013/03/25
Carbon nanotubes have been attracting attention because of their unique physical properties and their application potential for field emission cathode. Carbon nanotubes possess the following properties favorable for field emission material
such as a high aspect ratio and sharp tip
high chemical stability
high mechanical strength
stable at high temperature. Some research works on carbon nanotubes field emitter and field emission display have been reported. Here
a kind of carbon microtubes and its field emission properties are introduced. They have some different properties with carbon nanotubes
and the density is lower than carbon nanotubes bundles. These carbon microtubes are directly synthesized by liquidoid epitaxy method on silicon substrates at low temperature. The field emission properties of carbon microtubes are reported too. Carbon microtubes film is synthesized in liquid by electrolysis. The graphite plate is as anode
and n-silicon substrate with resistivity of 4-8 cm is as cathode. The electrolysis current is about 5-8mA/cm2
and applied voltage is 800-1500V. Temperatures of the methanol base solution is maintained at 60C in process of deposition of carbon microtubes. Carbon microtubes film is observed by scanning electron microscopy(SEM)
as shown in fig.1(a
b). The wall's thickness of carbon microtube is about 60nm. The diameter of carbon microtube is about 0.8 m. Raman spectrum of carbon microtubes film shows the two peaks at 1342and 1560cm-1. The field emission properties of carbon microtubes are measured in high vacuum chamber(10-5Pa). The emission area of carbon microtubes is 0.5cm 0.5cm. The threshold of field emission of the carbon microtubes film is about 3.6V/ m. Field emission property of carbon microtubes film is shown in fig.2. Another
when the electric field between anode and cathode is 10V/ m
the electric field distribution on single carbon microtube is also given after calculation according to electric field theory. Fig 3 shows that electric field distribution vertical section on the of single carbon microtube top with 2 m of highness. These results may help us to understand field emission properties of carbon microtubes. According to research results
it is found that liquidoid synthesis is simple method to produce carbon microtubes cold cathode material
and the carbon microtubes have better field emission properties. 2005 IEEE.
Electron field emission from carbon nanoparticles prepared by microwave-plasma chemical-vapor deposition
期刊论文
OAI收割
APPLIED PHYSICS LETTERS, 2001, 卷号: 78, 期号: 15, 页码: 2226
Yu, J
;
Wang, EG
;
Bai, XD
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浏览/下载:23/0
  |  
提交时间:2013/09/17
CVD DIAMOND FILMS
AMORPHOUS-CARBON
COLD-CATHODE
THIN-FILMS
NANOTUBES
GRAPHITE
Formation of CN radical by DC discharge of CH3CN and LIF measurement
期刊论文
OAI收割
acta physico-chimica sinica, 1998, 卷号: 14, 期号: 7, 页码: 664-668
作者:
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2015/11/10
CN radical
laser induced fluorescence
molecular beam
polarization
cold cathode DC discharge