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长春光学精密机械与物... [3]
西双版纳热带植物园 [1]
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In-situ construction of stable cathode/Li interfaces simultaneously via different electron density azo compounds for solid-state lithium metal batteries
期刊论文
OAI收割
ENERGY STORAGE MATERIALS, 2021, 卷号: 40, 页码: 394-401
作者:
Li, Jin
;
Huo, Feng
;
Chen, Tianhua
;
Yan, Hanwen
;
Yang, Yaxi
  |  
收藏
  |  
浏览/下载:53/0
  |  
提交时间:2021/08/31
Lithium metal battery
Solid-state electrolyte
Azo compounds
Interface
Different electron density
Evidence for the regulation of leaf movement by photosystem II activity
期刊论文
OAI收割
ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2014, 卷号: 107, 期号: X, 页码: 167-172
作者:
Zhang, JL
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2014/11/24
SYNECHOCYSTIS SP PCC-6803
CYCLIC ELECTRON FLOW
PHOTON FLUX-DENSITY
CHLOROPHYLL FLUORESCENCE
ENVIRONMENTAL-STRESS
WATER AVAILABILITY
DIFFERENT NITROGEN
XANTHOPHYLL CYCLE
OXIDATIVE STRESS
GAS-EXCHANGE
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.
The effect of N/Si ratio on the a-SiiH/SiNx interface of a-SirH/SiNx TFT (EI CONFERENCE)
会议论文
OAI收割
Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China
Liu J. e.
;
Gao W.
;
Liao Y.
;
Jing H.
;
Fu G.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
The threshold voltage of a-Si: H/SiNx TFT will shift under long time gate bias stress
it is mostly leaded by charge trapping in gate insulator and defect creation in semiconductor. And it is hard to be applied in AMOLED for TFT because of its threshold voltage shift. In allusion to the phenomenon of charge trapping
a series of SiNx insulating films in different N/Si(0. 87 -1.68) ratio were deposited by PECVD in this paper
controlling different flow ratio of source gas SiH4 and NH3
and a great deal of tests (ellipsometer
infrared absorption (FTIR) and Electron Dispersion Spectrum (EDS) test ) were done on these samples. Based on these SiNx insulators
three different capacitance samples in MIS structure were done
degraded experiments and C-V tests on these samples were done. The C-V curve shift of capacitance which contained SiNx with slightly N-rich(N/Si is bigger slightly than 1. 33) was not evident before and after degradation
this result indicated that the defect density of this type SiN x was smaller
and could restrain charge chapping in the interface of a-Si:H/SiNx effectively. So that as gate insulator of TFT
SiN x with slightly N-rich could decrease the threshold voltage shift of TFT and enhance its stability effectively.
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.
收藏
  |  
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.