Recombination of many-particle states in InAs self-organized quantum dots
Strong many-body effects have been observed in the time-resolved photoluminescence spectroscopy of self-organized InAs/GaAs quantum dots. Our results show that the effects generate a considerable bandgap renormalization, being 28 meV at a dot occupancy of 20 electron-hole pairs for the lowest transi...
| 主要な著者: | , , , , , |
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| フォーマット: | Conference item |
| 出版事項: |
2001
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| 要約: | Strong many-body effects have been observed in the time-resolved photoluminescence spectroscopy of self-organized InAs/GaAs quantum dots. Our results show that the effects generate a considerable bandgap renormalization, being 28 meV at a dot occupancy of 20 electron-hole pairs for the lowest transition. Tt is also found that many-particle state scattering gives rise to a large homogeneous broadening of the photoluminescence peak, from which we estimate the intradot relaxation time to be 300 B. The fast intradot relaxation is supported by time-resolved measurements with direct excitation. |
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