A high-voltage and high-current photoconductive semiconductor switch and its breakdown characteristics

Wei, Shi; Liqiang, Tian; Wang, Xinmei; Xu, Min; De-Ming, Ma; Zhou, Lei; Liu, Hongwei; Xie, Weiping

doi:10.7498/aps.58.1219

Acta Phys. Sin.

2009

DOI: 10.7498/aps.58.1219

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A high-voltage and high-current photoconductive semiconductor switch and its breakdown characteristics

Shi Wei¹,

Tian Liqiang²,

Xinmei Wang³

et al.

Abstract: Semi-insulating GaAs photoconductive semiconductor switch (PCSS) with withstand voltage of 32 kV and peak current of 3.7 kA has been developed. The breakdown mechanism of the PCSS is analyzed. It is shown that the breakdown of PCSS fabricated from indirect band-gap semiconductors is determined mainly by limited conduction of trap filling, but for PCSS's fabricated from materials that exhibit the transferred-electron effect, such as GaAs, breakdown of the PCSS is caused mainly by the negative-resistance-induced… Show more

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Cited by 4 publications

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Measurement and control for a repetitive nanosecond-pulse breakdown experiment in polymer films

et al. 2010

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In order to perform data acquisition and avoid unwanted over-current damage to the power supply, a convenient and real-time method of experimentally investigating repetitive nanosecond-pulse breakdown in polymer dielectric samples is presented. The measurement-acquisition and control system not only records breakdown voltage and current, and time-to-breakdown duration, but also provides a real-time power-off protection for the power supply. Furthermore, the number of applied pulses can be calculated by the product of the time-to-breakdown duration and repetition rate. When the measured time-to-breakdown duration error is taken into account, the repetition rate of applied nanosecond-pulses should be below 40 kHz. In addition, some experimental data on repetitive nanosecond-pulse breakdown of polymer films are presented and discussed.

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Measurement and control for a repetitive nanosecond-pulse breakdown experiment in polymer films

et al. 2010

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Electrorotation manipulation of microparticles induced by torque and electroosmotic slip in microsystem

Jiang¹,

Ren²,

Ye³

2011

Acta Phys. Sin.

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Electrorotation is an effective technique to characterize the electrical properties of dispersed particles. For the low Reynolds number microsystem, the mechanism of the electrorotation of microparticles induced by torque was analyzed based on the Maxwell-Wagner polarization. Characteristic frequency corresponding to the peak value of the electrorotation speed was deduced and the effect of the relaxation time on the particles' electrorotation direction was analyzed by the simulation of the electrorotation speed induced by the torque. The mechanism of the electrorotation of the microparticles induced by electroosmotic slip was qualitative analyzed based on the double layer and the idea about the gold surface being favorable to the electrorotation was proposed. Experiments on the electrorotation of the polystyrene with the carboxy surface and gold modified surface were performed, respectively. The results show that, the direction of the electrorotation of polystyrene spheres with carboxy surface is opposite to the electric field and, the corresponding frequency is higher with the torque playing the leading role. On the other hand, direction of the rotation of polystyrene spheres with the gold surface is homodromous with the electric field and the corresponding frequency is lower with the electroosmotic slip playing the leading rose.

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Effect of asymmetrical micro electrode surface topography on alternating current electroosmosis flow rate

Jiang¹,

Li²,

Zhen-Xiu³

et al. 2011

Acta Phys. Sin.

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AC Electroosmosis(ACEO) induced by electric field is the basic approach for non-mechanical microfluid pumping. Traditional ACEO theory is based on electric double layer (EDL) theory, and gives electric-flow field coupling equations for ACEO flo w rate. But there is a big deviation between the calculation data and experimental velocities. In this paper, electrode surface topography is included to solve ACEO flow rate. Withelectrode surfaceroughness as the characteristic parameter, equivalent EDL model is set up to modify the classical EDL model. The relationship between flow rate and electrode surface roughness is studied. Experiment results agree with the simulation very well, proving the feasibility ofequivalent EDL model.

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A high-voltage and high-current photoconductive semiconductor switch and its breakdown characteristics

Cited by 4 publications

References 0 publications

Measurement and control for a repetitive nanosecond-pulse breakdown experiment in polymer films

Measurement and control for a repetitive nanosecond-pulse breakdown experiment in polymer films

Electrorotation manipulation of microparticles induced by torque and electroosmotic slip in microsystem

Effect of asymmetrical micro electrode surface topography on alternating current electroosmosis flow rate

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