Splitting and storing excitons in strained coupled self-assembled quantum dots
| Autor: | Pierre Petroff, T. Lundstrom, Arndt Jaeger, T. Mankad, Winston V. Schoenfeld, H. Lee |
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| Rok vydání: | 2000 |
| Předmět: |
Physics
Photoluminescence Quantum point contact Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Quantum dot Quantum dot laser Electro-absorption modulator Atomic physics Quantum-optical spectroscopy Biexciton |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 7:494-498 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/s1386-9477(99)00367-7 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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