The determination of e14 in (111)B-grown (In,Ga)As/GaAs strained layers

被引:7
作者
Ballet, P
Disseix, P [1 ]
Leymarie, J
Vasson, A
Vasson, AM
Grey, R
机构
[1] CNRS, UMR 6602, LASMEA, F-63177 Aubiere, France
[2] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England
关键词
thermally-detected optical absorption; multiple quantum wells; (In; Ga)As/GaAs layers;
D O I
10.1016/S0040-6090(98)01253-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Strained layer (111)B-grown In0.15Ga0.85As/GaAs p-i-n quantum well structures have been investigated by thermally-detected optical absorption and modulation spectroscopy in order to determine the piezoelectric constant in the (In,Ga)As layers, The impact of both indium segregation and temperature is shown to be great on this determination. We show that those two phenomena may account for the discrepancy between the values reported in the literature and that expected from a linear interpolation between the piezoelectric constants of the two binaries InAs and GaAs. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:354 / 357
页数:4
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