Effects of dimensionality on radiative recombination lifetime of excitons in thin quantum boxes of intermediate regime between zero and two dimensions

Hideki Gotoh, Hiroaki Ando, Toshihide Takagahara, Hidehiko Kamada, Arturo Chavez-Pirson, Jiro Temmyo

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We report on effects of dimensionality on radiative recombination lifetime in thin quantum boxes of intermediate regime between 0D and 2D. The temperature dependence of the recombination lifetime is calculated using a theoretical analysis that rigorously treats the electron-hole Coulomb interaction. We show how the dependence evolves from 2D to 0D with a decrease in the lateral width of the box. We also examine the effects of exciton localization, which arises from structural defects in the boxes, on the radiative recombination lifetime. These theoretical results are compared with experimental data obtained from InGaAs quantum disks on a (311)B GaAs substrate. Good agreement between theoretical results and the experimental data is obtained.

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Keywords

  • Effects of dimensionality
  • Effects of structural defects
  • Quantum disks
  • Radiative recombination lifetime
  • Thin quantum boxes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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