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长春光学精密机械与物... [4]
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会议论文 [3]
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专题:长春光学精密机械与物理研究所
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Localized Surface Plasmon Enhanced All-Inorganic Perovskite Quantum Dot Light-Emitting Diodes Based on Coaxial Core/Shell Heterojunction Architecture
期刊论文
Advanced Functional Materials, 2018, 卷号: 28, 期号: 20, 页码: 11
作者:
Shi, Z. F.
;
Li, Y.
;
Li, S.
;
Li, X. J.
;
Wu, D.
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2019/09/17
core/shell architectures
light-emitting diodes
perovskite
plasmonic
nanoparticles
stability
turn-on voltage
high-efficiency
solar-cells
ultraviolet emission
high-performance
nanorod arrays
nanoparticles
stability
emitters
lasers
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
The effect of N/Si ratio on the a-SiiH/SiNx interface of a-SirH/SiNx TFT (EI CONFERENCE)
会议论文
Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China
Liu J. e.
;
Gao W.
;
Liao Y.
;
Jing H.
;
Fu G.
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  |  
浏览/下载:19/0
  |  
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.
Design of an improved data signal timing for an amorphous silicon active-matrix organic LED display (EI CONFERENCE)
会议论文
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Liao Y.-P.
;
Zhang Z.-W.
;
Shao X.-B.
;
Liu J.-E.
;
Guo-zhu F. U.
;
Jing H.
;
Qiu F.-B.
;
Kai M. A.
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  |  
浏览/下载:12/0
  |  
提交时间:2013/03/25
The most critical issue in the design of an active matrix organic light emitting diode (AM-OLED) display pixel is the pixel to the pixel luminance uniformity. By substituting four-thin film transistor (TFT) pixel circuit for two-TFT pixel circuit
the luminous uniformity has great improved
but it requires more components than the two-TFT pixel circuit. There are some barriers needed to resolve to utilize hydrogenated amorphous silicon transistor to lit OLED
such as low field effect mobility
low output current and threshold voltage shift. In this article
a two-a-Si:H TFT pixel circuit was designed
which consisted of one named switching TFT and the other named driving TFT. The driving TFT gate line structure modified and a data signal timing improved were reported. The modified driving TFT can provide enough current about 30 microampere to lit OLED and the novel data signal timing can provide a constant current to OLED by restraining the driving TFT threshold voltage variation. In the novel data signal timing
the control signals to the driving TFT gate include a data signal and a reverse data signal. The signals alteration is performed either at a frame rate or at a line rate. By experiments
the driving TFT output current value is plotted as a function of the time in different reversed voltage value. When the magnitude of the positive data signal and the negative data signal is equal
the variety of Vth
is smallest
about 1.28V after a fixed stressing time of 1.33104min
which shows the novel data signal timing can improved the driving TFT output-input current stability.
Fabrication and electron emission of carbon microtubes (EI CONFERENCE)
会议论文
Technical Digest of the 18th International Vacuum Nanoelectronics Conference, IVNC 2005, July 10, 2005 - July 14, 2005, Oxford, United kingdom
Wang W.
;
Xia Y.
;
Lei D.
;
Chen S.
;
Liu L.
;
Chen M.
;
Liang J.
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  |  
浏览/下载:29/0
  |  
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.
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