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NCUEIR > College of Engineering > eedept > Periodical Articles > Item 987654321/13973

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/13973

Title:	Intrinsic and Extrinsic Effects on Performance Limitation of AlGaAs/GaAs Double-barrier Resonant Tunneling Structures
Authors:	Wu, Jenq-Shinn;Lee, C. P.;Chang, C. Y.;Chang, K. H.;Liu, D. G.;Liou, D. C.
Contributors:	電子工程學系
Date:	1992-05
Issue Date:	2012-09-10T02:33:39Z
Publisher:	Elsevier
Abstract:	The performance limitations of negative differential resistance (NDR) in AlGaAs/GaAs double-barrier resonant tunneling structures (DBRTSs) have been investigated by varying the barrier thickness and quantum well (QW) width, and by doping In into the barrier layers. For devices with thick barriers (), the scattering in the material is believed to cause the saturation of the peak-to-valley current ratio (PVCR). The dependence of PVCR on the well width, however, is found to be, to the first-order, not related to the scattering mechanisms or other material properties. It is rather an inherent property of the tunneling process under different conditions. On the other hand, it was found that a proper amount of In doping into the barrier layers can increase the PVCR, because of the lower defect concentration, resulting in lower scattering rate in the active region.
Relation:	Solid-State Electronics, 35(5): 723-730
Appears in Collections:	[eedept] Periodical Articles

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