Chin. Phys. Lett.  2011, Vol. 28 Issue (12): 124201    DOI: 10.1088/0256-307X/28/12/124201
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Peculiar Transmission Characteristics of the Large Gap Semi-Insulating GaAs Photoconductive Switch
SHI Wei1**, MA Xiang-Rong1,2
1Department of Applied Physics, Xi'an University of Technology, Xi'an 710048
2Institute of Physics and Electionic Enginerting, Xinjiang Normal University, Urumqi 830054
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SHI Wei, MA Xiang-Rong 2011 Chin. Phys. Lett. 28 124201
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Abstract Unique experimental phenomena are discovered in a large gap semiinsulating (SI) GaAs photoconductive semiconductor switch (PCSS) and the peculiar transmission characteristics are exhibited in the experiment. The transmission characteristics for the large gap SI-GaAs PCSS are entirely different from the commonly designed PCSS. By analyzing the differences of the transmission characteristics between the common and the large gap SI-GaAs PCSS, a detailed statistical analysis and theoretical explanations are expounded. The large gap SI-GaAs PCSS works in the overvoltage relaxation limit space charge accumulation (LSA) mode when the conditions of 5×104 s⋅cm−3 ≤ n0/f ≤ 3×105 s⋅cm−3 and n0 L ≥ 1013 cm−2 must be met in the switch, with n0 being carrier concentration and f the frequency. The large gap SI-GaAs PCSS we developed has not shown the nonlinear (lock-in) behavior at high bias voltage, so the withstand voltage and service life for PCSS are improved.
Keywords: 42.65.Re      72.40.+w     
Received: 08 June 2011      Published: 29 November 2011
PACS:  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  72.40.+w (Photoconduction and photovoltaic effects)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/12/124201       OR      https://cpl.iphy.ac.cn/Y2011/V28/I12/124201
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SHI Wei
MA Xiang-Rong
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[12] Shi W, Tian L Q, Liu Z, Zhang L Q and Zhang Z Z 2008 Appl. Phys. Lett. 92 043511
[13] Shi W, Qu G H, Xu M, Xue H and Ji W L 2009 Appl. Phys. Lett. 94 072110
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