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InGaAs/GaAs Quantum Dot Interdiffusion Induced by Cap Layer Overgrowth
Published online by Cambridge University Press: 10 February 2011
Abstract
The effect of thermal treatment during and after growth of InGaAs/GaAs quantum dot (QD) structures was studied. Transmission electron microscopy and atomic force microscopy confirmed the presence of interacting QDs, as was expected from analysis of temperature dependence of QD photoluminescence (PL) peak. The results indicate that the effect of post-growth annealing can be similar to the effect of elevated temperature of capping layer growth. Both, these thermal treatments can lead to a similar In and Ga interdiffiusion resulting in a similar blue-shift of QD PL peak.
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- Copyright © Materials Research Society 2000
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