Photo-EMF effect under the influence of nonlinear hot-electron transport in photorefractive quantum wells diodes

被引：0
|
作者：
Hernández-Hernández, E [1 ]
García-Lara, C [1 ]
Rodriguez, P [1 ]
Ramos-García, R [1 ]
Nolte, D [1 ]
Melloch, MR [1 ]
机构：
[1] Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
来源：
PHOTOREFRACTIVE EFFECTS, MATERIALS AND DEVICES, PROCEEDINGS | 2001年 / 62卷
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D O I：
暂无
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
In this work we present results on photoconductivity and non-steady-state photoelectromotive force (PEMF) currents in multiple photorrefractive quantum wells (PRQW) ofGaAs/AlGaAs in longitudinal configuration under dc applied electric fields E-0. Velocity saturation and negative differential resisitivity are observed on the photoconductivity and therefore in the PEMF current. We also observe that the peak of the PEMF signal (which occurs at modulation frequency equal to the inverse of the dielectric relation time) is independent of the applied field for E-0<11.3 kV/cm.
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页码：410 / 416
页数：7
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