| Autor: |
Moroni, S. T., Chung, T. H., Juska, G., Gocalinska, A., Pelucchi, E. |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Appl. Phys. Lett. 111, 083103 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.4985259 |
| Popis: |
We report on stacked multiple quantum dots (QDs) formed inside inverted pyramidal recesses, which allow for the precise positioning of the QDs themselves. Specifically we fabricated double QDs with varying inter-dot distance and ensembles with more than two nominally highly symmetric QDs. For each, the effect of the interaction between QDs is studied by characterizing a large number of QDs through photoluminescence spectroscopy. A clear red-shift of the emission energy is observed together with a change in the orientation of its polarization, suggesting an increasing interaction between the QDs. Finally we show how stacked QDs can help influencing the charging of the excitonic complexes. |
| Databáze: |
arXiv |
| Externí odkaz: |
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