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Schematic of InAs QDs embedded in GaAs matrix with an InGaAsSb strain-reducing layer.
(Color online) Photoluminescence spectra of samples A, B, C, and D at . The inset shows the possible band diagram of sample D.
(Color online) Room-temperature photoluminescence spectra of samples A, B, C, and D. Insets 1 and 2 show, respectively, the band diagrams of and structures.
(Color online) Temperature dependence of the integrated PL intensity of samples A, B, C, and D. Note that the curves are shifted vertically for clarity.
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