Development and characterization of diamond-coated photoconductive switches for stacked Blumlein pulsers

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI:10.1109/MODSYM.2002.1189447

F. Davanloo, C. B. Collins

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引用次数: 1

Abstract

The semiconductor properties of amorphic diamond have been employed to improve the photoconductive semiconductor switch (PCSS) longevity by coating the switch cathode or anode areas or both. If the switch cathode is coated, the tunneling of electrons from amorphic diamond to GaAs during the off-state stage of PCSS operation provides pre-avalanche sites that diffuse conduction current upon switch activation. On the other hand, diamond coating of the switch anode results in increased hold-off characteristics and longer switch lifetimes by blocking the leakage current. In this case the rectifying behavior of the amorphic diamond/GaAs heterojunction operating under reverse bias condition inhibits the conduction until very high fields are reached. This report presents the progress toward improving the high pin switch operation and lifetime in stacked Blumlein pulsers. The switch design options that make optimal use of amorphic diamond coatings for long life operations of avalanche PCSS are given and discussed.

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叠置Blumlein脉冲用金刚石涂层光导开关的研制与表征

非晶金刚石的半导体特性已被用来提高光导半导体开关(PCSS)的寿命，通过涂层开关的阴极或阳极区域或两者。如果开关阴极被涂覆，则在PCSS操作的非晶金刚石到砷化镓的电子隧穿提供了在开关激活时扩散传导电流的雪崩前位点。另一方面，开关阳极的金刚石涂层通过阻断泄漏电流而增加了保持特性和延长了开关寿命。在这种情况下，非晶金刚石/砷化镓异质结在反向偏置条件下的整流行为抑制了传导，直到达到非常高的场。本报告介绍了在改进堆叠Blumlein脉冲的高引脚开关操作和寿命方面的进展。给出并讨论了使非晶金刚石涂层在雪崩PCSS长寿命运行中得到最佳利用的开关设计方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop.

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