Performance and Optimization of a 50 kV Silicon Carbide Photoconductive Semiconductor Switch for Pulsed Power Applications

被引:0
|
作者
Hettler, Cameron [1 ]
Sullivan, William W., III [1 ]
Dickens, James [1 ]
Neuber, Andreas [1 ]
机构
[1] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 USA
关键词
Photoconductive semiconductor switch; silicon carbide; high voltage switch;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A 50 kV silicon carbide photoconductive semiconductor switch (PCSS) is presented. The SiC PCSS device is fabricated from semi-insulating 4H-SiC in a newly-proposed rear-illuminated, radial switch structure. The improved structure reduces the peak electric field within the switch, extending the blocking voltage to over 50 kVdc. Electrostatic field simulations of the PCSS are presented along with experimental blocking curves. The PCSS demonstrated low on-state resistance, delivering over 27 MW of peak power into a 31 Omega load. Device modeling was performed to further optimize the switch for peak efficiency when illuminated with 355 nm light, a common laser wavelength. The switch structure was modified for peak operation at 355 nm and the experimental and theoretical results are compared.
引用
收藏
页码:70 / 72
页数:3
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