High quality relaxed GaAs quantum dots in GaP matrix

Shamirzaev, Timur S.; Abramkin, Demid S.; Gutakovskii, Anton K.; Putyato, Mikhail A.
July 2010
Applied Physics Letters;7/12/2010, Vol. 97 Issue 2, p023108
Academic Journal
A system of GaAs self-assembled quantum dots (QDs) embedded in GaP matrix was studied by means of transmission electron microscopy, steady-state, and transient photoluminescence. Unusually, the QDs are fully unstrained but they have no nonradiative centers introduced by dislocations at GaAs/GaP heterostructure. The band alignment in the QDs is shown to be of type I.


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