Experimental investigation of limit space charge accumulation mode operation in a semi-insulating GaAs photoconductive semiconductor switch

被引：0

作者：

马湘蓉 ^{[1
,2
]}

施卫 ^{[1
]}

向梅 ^{[2
]}

机构：

[1] Departments of Applied Physics,Xi'an University of Technology

[2] Institute of Physics and Electronic Engineering,Xinjiang Normal University

来源：

Journal of Semiconductors | 2013年 / 34卷 / 07期

关键词：

D O I：

暂无

中图分类号：

TN36 [半导体光电器件];

学科分类号：

0803 ;

摘要：

<正>Experiments with the limited space-charge accumulation(LSA) mode of oscillation in a large gap semiinsulating (SI) GaAs photoconductive semiconductor switch(PCSS) are discussed.It has been observed that growth and drift of a photo-activated charge domain(PACD) are quenched only when the bias voltage is more than twice the threshold voltage.The original negative resistance characteristics are directly utilized in the LSA mode;during LSA operation the spatial average of the electric field varies over a large portion of the negative differential mobility region of the velocity-electric field characteristic.The work efficiency of an SI GaAs PCSS is remarkably enhanced by electric field excursions into the positive resistance region when the total electric field is only below the threshold part of the time.The LSA mode can only operate in the certain conditions that satisfy the quenching of the accumulation layer and the smaller initial domain voltage.

引用

页码：106 / 110

页数：5

共 3 条

[1] Peculiar Transmission Characteristics of the Large Gap Semi-Insulating GaAs Photoconductive Switch [J].