scholarly journals Особенности механизма диффузии в структуре алюминий-кремний при облучении ее поверхности внеэлектродной плазмой высоковольтного газового разряда

2020 ◽  
Vol 90 (1) ◽  
pp. 62
Author(s):  
В.А. Колпаков ◽  
С.В. Кричевский
Keyword(s):  
Penetration Depth ◽  
Thermal Diffusion ◽  
High Voltage ◽  
Discharge Current ◽  
Diffusion Mechanism ◽  
Gas Discharge ◽  
Impurity Distribution ◽  
Concentration Profiles ◽  
Silicon Plate ◽  
Theory And Experiment

Features of the diffusion mechanism in Al-Si structure when its surface is irradiated by off-electrode plasma of high-voltage gas discharge at discharge current I=50 mA, accelerating voltage U=4 kV and radiation durations 90 s < t ≤ 600 s are investigated. Model for calculating the concentration profiles of aluminum impurity distribution in silicon plate as a function of Al-Si structure irradiation parameters is proposed; corresponding analytical dependences and also good consent of the theory and experiment are obtained. It is shown that the maximum values of diffusant concentration are reached at a penetration depth of electrons into the semiconductor because of forming of vacancies by them in a layer (х ≈ 0.25 μm). Specified is followed by increase at 2-3 orders of coefficient of thermal diffusion.

Low-pressure gas-discharge current interrupters in a generator of high-voltage nanosecond pulses with an inductive energy storage

2017 ◽  
Vol 60 (6) ◽  
pp. 811-817 ◽  
Author(s):  
N. M. Vereshchagin ◽  
S. A. Kruglov ◽  
A. A. Serezhin ◽  
S. G. Shatilov ◽  
K. D. Agaltsov ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Voltage ◽  
Discharge Current ◽  
Low Pressure ◽  
Gas Discharge ◽  
Inductive Energy Storage ◽  
Nanosecond Pulses

Issues of Application of High-Voltage Pulse Generators with Inductive Energy Storage and Gas-Discharge Current Interrupters

2021 ◽  
Author(s):  
Sergey A. Kruglov ◽  
Nikolai M Vereschagin ◽  
Sergey M. Karabanov ◽  
Andrei A. Serezhin ◽  
Dmitriy V. Suvorov ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Voltage ◽  
Discharge Current ◽  
Voltage Pulse ◽  
High Voltage Pulse ◽  
Gas Discharge ◽  
Pulse Generators ◽  
Inductive Energy Storage

Depth profile analysis of solar cell silicon by GD-MS

2014 ◽  
Vol 29 (11) ◽  
pp. 2072-2077 ◽  
Author(s):  
M. Di Sabatino ◽  
C. Modanese ◽  
L. Arnberg
Keyword(s):  
Solar Cell ◽  
Depth Profile ◽  
Profile Analysis ◽  
Depth Resolution ◽  
Impurity Distribution ◽  
Concentration Profiles ◽  
Good Sensitivity ◽  
Transition Elements ◽  
Depth Profile Analysis

Comparison of SIMS (top) and GD-MS (bottom) analyses on sample R6-2b (implanted B). dc HR-GD-MS can be used for depth profile analysis of impurities in PV Si with good sensitivity and a depth resolution of 0.5 μm. Concentration profiles of samples contaminated with B, P and Ti agreed well with implanted levels. For fast diffusing transition elements, e.g. Fe and Cu, different impurity distribution mechanisms occur. This should be taken into account when analysing these impurities.

Morphology of Voltage-Triggered Ordered Wrinkles of a Dielectric Elastomer Sheet

2017 ◽  
Vol 84 (11) ◽  
Author(s):  
Guoyong Mao ◽  
Lei Wu ◽  
Xueya Liang ◽  
Shaoxing Qu
Keyword(s):  
High Voltage ◽  
Optical Sensor ◽  
Material Science ◽  
Dielectric Elastomer ◽  
Theoretical Studies ◽  
Science And Engineering ◽  
Future Design ◽  
Experimental And Theoretical Studies ◽  
Theory And Experiment ◽  
Good Agreement

Wrinkles widely existing in sheets and membranes have attracted a lot of attention in the fields of material science and engineering applications. In this paper, we present a new method to generate ordered (striplike) and steady wrinkles of a constrained dielectric elastomer (DE) sheet coated with soft electrodes on both sides subjected to high voltage. When the voltage reaches a certain value, wrinkles will nucleate and grow. We conduct both experimental and theoretical studies to investigate the wavelength and amplitude of the wrinkle. The results show a good agreement between theory and experiment. Moreover, the amplitude and wavelength of ordered wrinkles can be tuned by varying the prestretch and geometry of the DE sheet, as well as the applying voltage. This study can help future design of DE transducers such as diffraction grating and optical sensor.

scholarly journals Na2Fe3(SO4)4 as a new high-voltage potential cathode material for sodium-ion batteries

2021 ◽  
Vol 130 (1B) ◽  
pp. 59-67
Author(s):  
Thien Lan Tran ◽  
Huu Duc Luong ◽  
Trong Lam Pham ◽  
Viet Bac Phung ◽  
Van An Dinh
Keyword(s):  
Cathode Material ◽  
High Voltage ◽  
Density Functional ◽  
Diffusion Processes ◽  
Small Polaron ◽  
Diffusion Mechanism ◽  
Sodium Ion ◽  
Structure Stability ◽  
Sodium Ion Batteries ◽  
Significant Difference

Based on the density functional theory, we propose a promising cathode material, Na2Fe3(SO4)4, applicable for sodium-ion batteries. The crystal structure, stability, average voltage, and diffusion mechanism are carefully investigated to evaluate the electrochemical properties. The proposed material exhibits a high voltage of 4.0 V during the Na extraction. A small polaron is proved to be formed preferably at the first nearest Fe sites to Na vacancy and simultaneously accompanies the Na vacancy during its migration. Four elementary diffusion processes of the polaron–Na vacancy complexes, namely two parallel and two crossing processes, have been explored. The significant difference of activation energies between parallel and crossing processes suggests the substantial effect of the small polaron migration on the Na vacancy diffusion. We found that the parallel process along the [001] direction has the lowest activation energy of 808 meV, implying that the Na vacancy preferably diffuses in a zigzag pathway along the [001] direction.

Discharge current of water electrospray with electrical conductivity under high-voltage and high-flow-rate conditions

2020 ◽  
Vol 118 ◽  
pp. 110151
Author(s):  
Soyeon Kim ◽  
Minkyu Jung ◽  
Sangmi Choi ◽  
Jinwook Lee ◽  
Jihun Lim ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Flow Rate ◽  
High Voltage ◽  
Discharge Current ◽  
High Flow ◽  
High Flow Rate

Gas-discharge current in a mixture of zeolite and silicon powders

2014 ◽  
Vol 59 (1) ◽  
pp. 148-151 ◽  
Author(s):  
V. I. Orbukh ◽  
N. N. Lebedeva ◽  
B. G. Salamov
Keyword(s):  
Discharge Current ◽  
Gas Discharge
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