Three-dimensional model for interdiffused quantum dots

O. Gunawan*, H. S. Djie, B. S. Ooi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We report the study of the interdiffusion effect of quantum-dot (QD) heterostructures, focusing on the theoretical calculation of the electronic structure of interdiffused QDs. A computational model has been developed for QD superlattice system using Hamiltonian in reciprocal space domain to analyze the interdiffusion effect on electronic structure. The interdiffusion effects of QDs with various geometries having the same volume and the same lattice constant have been studied. In general, the interdiffusion effect in QDs is significantly pronounced since it occurs in three dimensions. Comparing the interdiffusion effect for the various shapes of QDs, it was found that the spherical QD has the lowest ground state and produces the largest blue-shift during the interdiffusion or intermixing process.

Original languageEnglish (US)
Pages (from-to)683-688
Number of pages6
JournalInternational Journal of Nanoscience
Volume4
Issue number4
DOIs
StatePublished - Aug 2005
Externally publishedYes

Keywords

  • Heterostructures
  • Interdiffusion
  • Intermixing
  • Semiconductor quantum-dot

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science (miscellaneous)
  • Electrical and Electronic Engineering

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