Abstract
Photoluminescence and excitation of photoluminescence spectroscopy have been performed for two kinds of single InAs self-assembled quantum dots grown on GaAs. The presence of unintentional impurities (donors and acceptors) offers the possibility to switch from negative to positively charged excitons by selectively exciting impurity related optical transitions.
Original language | English |
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Pages (from-to) | 494-499 |
Number of pages | 6 |
Journal | Superlattices and Microstructures |
Volume | 43 |
Issue number | 5-6 |
DOIs | |
Publication status | Published - May 2008 |
Externally published | Yes |
Keywords
- Charge transfer
- Impurity related absorption
- Single QD spectroscopy
- Trion recombination