期刊
IEEE ELECTRON DEVICE LETTERS
卷 42, 期 11, 页码 1646-1649出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2021.3114600
关键词
GaAs photoconductive semiconductor switch (PCSS); triggering position; multiple avalanche domains
资金
- National Natural Science Foundation of China [51707162, 52177156]
- Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect [SKLIPR2004]
- Fundamental Research Funds for Central Universities [xzy022021047]
The study found that cathode-triggered GaAs PCSS have shorter delay time and lower on-state resistance compared to anode-triggered devices under the same operation conditions. A delay time jitter of approximately 45.6 ps was achieved at a power level of around 4 MW with cathode triggering. The theory of multiple avalanche domains was introduced to explain the influence of laser spot location on triggering efficiency.
In this letter, the triggering efficiency of 1-mm-gap, opposed-contact GaAs Photoconductive Semiconductor Switch (PCSS) is studied in avalanche mode. Compared with the anode-triggered PCSSs, it is found that the cathode-triggered devices are with shorter delay time and lower on-state resistance under the same operation conditions. The delay time jitter of similar to 45.6 ps is also achieved at the power level of similar to 4 MW by cathode triggering. Then the theory of multiple avalanche domains is introduced to interpret the influence of laser spot location on triggering efficiency by a two-dimensional (2D) device simulation. The delay time and on-state resistance are essentially attributed to the formation time and the density of avalanche domains which are affected by the triggering position.
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