Binding and overlap function of incompletely confined excitons in quantum dots

Jia Lin Zhu, Shaofeng Zhu, Ziqiang Zhu, Yoshiyuki Kawazoe, T. Yao

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Using a variational method with introduction of effective electron potentials, binding energies and overlap functions of exciton ground states in ZnSe/ZnS quantum dots (QDs) with small conduction-band offset are calculated. It is found that excitons in ZnSe/ZnS QDs are incompletely confined due to the extension of electrons in the weak confinement condition. The binding energies of such excitons are almost independent of potential shapes and quantum sizes while the overlap functions are dependent on the shapes and sizes of QDs. It is quite different between ZnSe/ZnS and conventional QDs and this will be subjected to experimental verification in the future.

Original languageEnglish
JournalJournal of Physics Condensed Matter
Volume10
Issue number34
DOIs
Publication statusPublished - 1998 Aug 31

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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