Splitting and storing excitons in strained coupled self-assembled quantum dots |
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Authors: | T. Lundstrom W. V. Schoenfeld T. Mankad A. Jaeger H. Lee P. M. Petroff |
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Abstract: | We present a novel self-assembled quantum dot structure designed to spatially separate and store photo-generated electrons and holes in pairs of strain coupled quantum dots. The spatial separation of electron–hole pairs into quantum dots and strain-induced quantum dots has been investigated and verified by photoluminescence experiments. Results from time-resolved PL demonstrates that at low temperatures (3 K) the electron–hole pair can be stored for several seconds. |
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Keywords: | Quantum dots Strain-induced quantum dots Exciton storage Charge storage InAs |
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