Detection of indium segregation effects in InGaAs/GaAs quantum wells using reflectance-difference spectrometry

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Abstract

The influence of the Indium segregation on the interface asymmetry in InGaAs/GaAs quantum wells have been studied by reflectance-difference spectroscopy (RDS). It is found that the anisotropy of the 2H1E (2HH→1E) transition is very sensitive to the degree of the interface asymmetry. Calculations taking into account indium segregation yield good agreement with the observed anisotropy structures. It demonstrates that the anisotropy intensity ratio of the 1L1E (1LH→1E) and 2H1E transitions measured by RDS can be used to characterize the interface asymmetry. © 2002 Elsevier Science B.V. All rights reserved.

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Ye, X., Chen, Y. H., Xu, B., & Wang, Z. G. (2002). Detection of indium segregation effects in InGaAs/GaAs quantum wells using reflectance-difference spectrometry. In Materials Science and Engineering B: Solid-State Materials for Advanced Technology (Vol. 91–92, pp. 62–65). https://doi.org/10.1016/S0921-5107(01)00971-0

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