Mid-infrared luminescence from coupled quantum dots and wells

P.A. Shields, L.J. Li, R.J. Nicholas

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Coupled nanostructures have been developed in the InAs/InSb/GaSb materials system in order to extend the emission wavelength further into the infrared, beyond 2 μm. The samples studied consist of a single narrow InAs quantum well grown below a layer of InSb quantum dots in a GaSb matrix, in which the coupling has been altered by changing the thickness of a GaSb spacer layer. The overall transition energy of the combined dot-well system is generally reduced with respect to the dots and well only but the dependence on spacer thickness is more complex than that expected from a simple envelope function model.
Original languageEnglish
Pages (from-to)341-344
Number of pages4
JournalPhysica E: Low-dimensional Systems and Nanostructures
Volume21
Issue number2-4
DOIs
Publication statusPublished - 2004

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