HIGH-ELECTRON-MOBILITY IN PSEUDOMORPHIC MODULATION-DOPED IN0.75GA0.25AS/INALAS HETEROSTRUCTURES ACHIEVED WITH GROWTH INTERRUPTIONS

被引:14
作者
DROUOT, V [1 ]
GENDRY, M [1 ]
SANTINELLI, C [1 ]
VIKTOROVITCH, P [1 ]
HOLLINGER, G [1 ]
ELLEUCH, S [1 ]
PELOUARD, JL [1 ]
机构
[1] ECOLE CENT LYON,LEAME,F-69131 ECULLY,FRANCE
关键词
D O I
10.1063/1.358879
中图分类号
O59 [应用物理学];
学科分类号
摘要
Growth interruptions under cation stabilization have been used to smooth the two interfaces defining the pseudomorphic channel layer of InAlAs/In 0.75Ga0.25As/InAlAs heterostructures grown on InP. This leads to a 4 K electron mobility as high as 170 000 cm2/V s, due to the reduction of interface roughness scattering. This structure is used as a reference ("zero" interface roughness) for a model to determine the influence of interface roughness scattering on the electron mobility as a function of the channel indium fraction (xIn=0.53, 0.65, and 0.75) in heterostructures grown without growth interruption. It is shown that the interface roughness scattering decreases with increasing indium concentration of the channel in the range 0.53-0.65 and saturates beyond xIn=0.65. © 1995 American Institute of Physics.
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页码:1810 / 1812
页数:3
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