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- W2176207310 abstract "We report a blue-shifted photoluminescence (PL) of closely stacked InAs/GaAs quantum dots (QDs) grown via molecular beam epitaxy on GaAs(1 0 0) substrates. Room temperature PL and chemical etching were used to isolate and characterize the quantum dot layers. PL measurements showed that there is a significant shifting to higher energy caused by the deposition of a second layer of QDs. Such shifting is present only in closely stacked QD layers. This would imply that the first QD layer capped with a 100 Å GaAs generates a strain field that not only causes vertical alignment but could also lead to the formation of a second QD layer with different structure and dimension than the first QD layer grown." @default.
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- W2176207310 date "2003-04-01" @default.
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- W2176207310 title "Observation of blue-shifted photoluminescence in stacked InAs/GaAs quantum dots" @default.
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- W2176207310 doi "https://doi.org/10.1016/s0022-0248(02)02401-6" @default.
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