Luminescence spectroscopy of InAs self-a
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P.D. Wang; J.L. Merz; G. Medeiros-Ribeiro; S. Fafard; P.M. Petroff; H. Akiyama;
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Article
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1997
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Elsevier Science
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English
β 180 KB
We present selective photoluminescence and photoluminescence excitation spectroscopy on self-assembled quantum dots. These spectroscopic techniques reveal a large apparent 'Stokes' shift in In(Ga)As-Ga(Al)As self-assembled quantum dots. We demonstrate that the first two excited states observed in PL