A comparison of spectroscopic and microscopic observations of ion-induced intermixing in InGaAs/InP quantum wells
- 30 March 1998
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 72 (13) , 1599-1601
- https://doi.org/10.1063/1.121185
Abstract
Using n-doped InGaAs/InP multi-quantum-well samples we compare measurements of ion-beam-induced quantum well broadening made by cross-sectional scanning tunneling microscopy and cross-sectional scanning transmission electron microscopy with the broadening calculated from the blueshift of the low temperature photoluminescence peak using different models of the intermixing process. Results are consistent with a simple square well model used to interpret photoluminescence shifts, but disagree with a model of separate Fick’s law diffusion on group III and V sublattices.Keywords
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