| 非线性GaAs光导开关丝状电流的快速导通特性研究 |
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| 引用本文： | 彭晓进.非线性GaAs光导开关丝状电流的快速导通特性研究[J].价值工程,2012,31(17):16-17. |
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| 作者姓名： | 彭晓进 |
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| 作者单位： | 陕西省安康职业技术学院,安康,725000 |
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| 摘 要： | 本文基于气体放电理论和光激发电荷畴模型,用半导体流注模型解释了高功率GaAs存在的丝状电流现象,并讨论其形成的物理过程。同时指出,载流子浓度和流注发生区域中电场要满足流注发生所需阈值条件。基于此流注模型,分析了丝状电流的快速导通特性,并用理论计算丝状电流的速度,此理论结果与实验相符。
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| 关 键 词： | 非线性模式 光电导开关 GaAs 丝状电流 |
Transient Turn-on Characteristic of Filament Current of Nonlinear GaAs Photoconductive Switches |
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| Peng Xiaojin.Transient Turn-on Characteristic of Filament Current of Nonlinear GaAs Photoconductive Switches[J].Value Engineering,2012,31(17):16-17. |
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| Authors: | Peng Xiaojin |
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| Institution: | Peng Xiaojin(Ankang Vocational Technical College in Shaanxi,Ankang 725000,China) |
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| Abstract: | In this paper,the current filament of high gain GaAs photoconductive semiconductor switches(PCSSs) is explained by the semiconductor streamer model.Based on the gas discharge theory and the model of optically activated charge domain,the physical process for the current filament in GaAs PCSSs is discussed and it is pointed that both the carrier density and the regional electric field are satisfied with two critical conditions for the formation and development of streamers.In this model,the transient turn-on characteristic is analyzed and the current filament ultra-fast velocity is calculated.The calculated results are in agreement with the experiment. |
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| Keywords: | nonlinear mode photoconductive switches GaAs filament current |
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