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The emission wavelength of InAs quantum dots grown on InP has been shown to shift to the technologically desirable 1.5μm with the deposition of 1–2 monolayers of GaAs on top of the quantum dots. Here, we use aberration-corrected scanning transmission electron microscopy to investigate morphological and compositional changes occurring to the quantum dots as a result of the deposition of 1.7 monolayers of GaAs on top of them, prior to complete overgrowth with InP. The results are compared with theoretical models describing the overgrowth process.
Original languageEnglish
JournalJournal of Crystal Growth
Publication date2011
Volume329
Issue1
Pages57-61
ISSN0022-0248
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 3
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