Confinement effects in PbSe quantum wells and nanocrystals

The effect of quantum confinement in PbSe quantum wells and dots is studied using tight binding calculations

G. Allan; C. Delerue

2004

Scholarcy highlights

  • The effect of quantum confinement in PbSe quantum wells and dots is studied using tight binding calculations
  • The energy gap increases as the inverse of the size both for wells and dots
  • For PbSe nanocrystals, the luminescence lifetime, the confinement energy, and the intraband optical properties are in good agreement with experiments
  • E1, E2, and E3 indicate the main transitions at critical points of the band structure.Reuse & Permissions
  • The electronic structure of bulk PbSe can be described by linear chains of p orbitals with only ppσ interactions.Reuse & Permissions
  • Band structure of bulk PbSe in the direction starting from the critical point Σ along the axis.Reuse & Permissions
  • Straight line: fit of the electron intraband transition energy: E=1∕(1.05D).Reuse & Permissions

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