Pressure-induced energy level crossings and narrowing of photoluminescence linewidth in self-assembled InAlAs/AlGaAs quantum dots
We present a study of the hydrostatic-pressure dependence of the photoluminescence from In0.5Al0.5As/Al0.25Ga0.75As self-assembled quantum dots. Three distinct regions of quantum-dot peak-energy shift with pressure are observed and are attributed to energy level crossings and band mixing effects. In...
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| Veröffentlicht in: | Applied physics letters 1999-03, Vol.74 (11), p.1549-1551 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | We present a study of the hydrostatic-pressure dependence of the photoluminescence from In0.5Al0.5As/Al0.25Ga0.75As self-assembled quantum dots. Three distinct regions of quantum-dot peak-energy shift with pressure are observed and are attributed to energy level crossings and band mixing effects. In addition, a large reduction in photoluminescence linewidth with applied pressure is noted. |
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| ISSN: | 0003-6951 1077-3118 |
| DOI: | 10.1063/1.123612 |