Theory of Hot-Electron Effects in Many-Valley Semiconductors in the Region of High Electric Field

1960 ◽  
Vol 5 (9) ◽  
pp. 423-425 ◽  
Author(s):  
H. G. Reik ◽  
H. Risken ◽  
G. Finger
1989 ◽  
Vol 146 ◽  
Author(s):  
N.T. Shih ◽  
F.S. Huang ◽  
C.H. Chu ◽  
W.S. Chen

ABSTRACTThe results of a detailed investigation of diffusion of ion implanted As in Si during Rapid Thermal Annealing are reported. A series of experiments has been performed on samples prepared for various thermal treatments, such as peroxidation and preheat. The RTA conditions were chosen at 850°C for 15 seconds in order to study the metastable state. Sample analysis includes depth profiling by RBS and Spreading Resistance measurements, electrical characterization employing Hall measurements, and residual defects by cross-section TEM and planar image. The carrier concentration profile shows the different extent of the mixed Gaussian-Chebyshev polynomial distribution for various prepared samples. We believe the neutral interstitial state I°(Si) survives during RTA for asreceived samples. It gives a Gaussian curve in As profile. The denuded region produced after thermal treatments reduces the oxygen content and creates less 1°(Si) during SPE. So the Gaussian-Chebyshev polynomial distribution was obtained. From the above study, we believe the Gaussian profile can be obtained by controlling RTA conditions This Gaussian-like profile can also suppress hot electron effects by its smooth gradient (generating small electric field) near drain and large overlap under spacer (making large electric field away from gate). So we fabricated rapid thermal annealing singlediffusion drain n-MOSFET. The reduction of hot electron effects was studied, too.


2020 ◽  
Vol 140 (8) ◽  
pp. 650-655
Author(s):  
Shoki Tsuji ◽  
Yoji Fujita ◽  
Hiroaki Urushibata ◽  
Akihiko Kono ◽  
Ryoichi Hanaoka ◽  
...  

2018 ◽  
Vol 7 (3.36) ◽  
pp. 127 ◽  
Author(s):  
Nishanthi Sunthrasakaran ◽  
Nor Akmal Mohd Jamail ◽  
Qamarul Ezani Kamarudin ◽  
Sujeetha Gunabalan

The most important aspect influencing the circumstance and characteristics of electrical discharges is the distribution of electric field in the gap of electrodes. The study of discharge performance requires details on the variation of maximum electric field around the electrode. In electrical power system, the insulation of high voltage power system usually subjected with high electric field. The high electric field causes the degradation performance of insulation and electrical breakdown start to occur. Generally, the standard sphere gaps widely used for protective device in electrical power equipment. This project is study about the electric field distribution and current density for different electrode configuration with XLPE barrier. Hence, the different electrode configuration influences the electric field distribution. This project mainly involves the simulation in order to evaluate the maximum electric field for different electrode configuration. Finite Element Method (FEM) software has been used in this project to perform the simulation. This project also discusses the breakdown characteristics of the XLPE. The accurate evaluation of electric field distribution and maximum electric field is an essential for the determination of discharge behavior of high voltage apparatus and components. The degree of uniformity is very low for pointed rod-plane when compared to other two electrode configurations. The non- uniform electric distribution creates electrical stress within the surface of dielectric barrier. As a conclusion, when the gap distance between the electrodes increase the electric field decrease.  


1979 ◽  
Vol 30 (2) ◽  
pp. 219-223 ◽  
Author(s):  
S.G. Dinev ◽  
Ch.I. Radev ◽  
K.V. Stamenov ◽  
K.A. Stankov

Author(s):  
Yingxia Wei ◽  
Yaoxiang Liu ◽  
Tie-Jun Wang ◽  
Na Chen ◽  
Jingjing Ju ◽  
...  

We report on a systematic experimental study on the fluorescence spectra produced from a femtosecond laser filament in air under a high electric field. The electric field alone was strong enough to create corona discharge (CD). Fluorescence spectra from neutral and ionic air molecules were measured and compared with pure high-voltage CD and pure laser filamentation (FIL). Among them, high electric field assisted laser FIL produced nitrogen fluorescence more efficiently than either pure CD or pure FIL processes. The nonlinear enhancement of fluorescence from the interaction of the laser filament and corona discharging electric field resulted in a more efficient ionization along the laser filament zone, which was confirmed by the spectroscopic measurement of both ionization-induced fluorescence and plasma-scattered 800 nm laser pulses. This is believed to be the key precursor process for filament-guided discharge.


1997 ◽  
Vol 72-74 ◽  
pp. 112-113 ◽  
Author(s):  
Zhidong Lou ◽  
Zheng Xu ◽  
Feng Teng ◽  
Xurong Xu

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