Charge-separated state in strain-induced quantum dots

Charge-separated state in strain-induced quantum dots

We have measured the time-resolved photoluminescence of strain-induced quantum dots. We show that a long-lived intermediate state is involved in the excitation transfer from the interstitial quantum well to the dot. This intermediate state has the properties expected of the charge separated state pr...

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Veröffentlicht in:Applied Physics Letters 1997-03, Vol.70 (13), p.1733-1735
Hauptverfasser: Gu, Y., Sturge, M. D., Kash, K., Watkins, N., Van der Gaag, B. P., Gozdz, A. S., Florez, L. T., Harbison, J. P.
Format: Artikel
Sprache:eng
Schlagworte:
ALUMINIUM ARSENIDES
CHARGE TRANSPORT
ENERGY LEVELS
GALLIUM ARSENIDES
HETEROJUNCTIONS
MATERIALS SCIENCE
PHOTOLUMINESCENCE
STRAINS
THIN FILMS
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Beschreibung
Zusammenfassung:We have measured the time-resolved photoluminescence of strain-induced quantum dots. We show that a long-lived intermediate state is involved in the excitation transfer from the interstitial quantum well to the dot. This intermediate state has the properties expected of the charge separated state predicted by theory.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.118684