Optical Properties of Type-I and II Quantum Dots

نویسندگان

  • F. Iikawa
  • M. P. F. Godoy
  • M. K. K. Nakaema
  • M. J. S. P. Brasil
  • M. Z. Maialle
  • M. A. Degani
  • E. Ribeiro
  • G. Medeiros-Ribeiro
  • W. Carvalho
  • J. A. Brum
چکیده

This paper focuses on recent results on the optical properties of self-assembled quantum dots involving typeI InGaAs/GaAs and type-II InP/GaAs interfaces. In the first part, we focus on the InGaAs/GaAs quantum dots, that were used to study the influence of a two-dimensional electron gas on the optical emission of single quantum dots. In the second part, we present the results on type-II InP/GaAs quantum dots. In this system, we observed an experimental evidence indicating that the model used to interpret the blue shift of the type-II quantum well optical emission cannot be applied to type-II quantum dots.

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تاریخ انتشار 2004