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Background impurities in Si0.8 Ge0.2/Si/Si0.8 Ge0.2 n-type δ-doped QW

  • V. Tulupenko
  • , C. A. Duque
  • , A. L. Morales
  • , A. Tiutiunnyk
  • , R. Demediuk
  • , T. Dmytrychenko
  • , O. Fomina
  • , V. Akimov
  • , R. L. Restrepo
  • , M. E. Mora-Ramos
  • Universidad de Antioquia
  • Donbass StateEngineering Academy
  • Universidad de Medellín
  • Universidad EIA
  • Universidad Autonoma del Estado de Morelos

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Additional (residual) impurities in the barriers change the energy profile of a quantum well. This means that they alter the ionization energy for the impurity delta layer situated within the quantum well. In turn, this is accompanied by the change of a V-shaped quantum well created by ionization of the delta layer. All of this is the subject of studies presented in this article. It has been shown that the most dramatic are the changes in the difference between the space-quantized energy levels for an edge-doped quantum well.

Original languageEnglish
Article number1600464
JournalPhysica Status Solidi (B) Basic Research
Volume254
Issue number4
DOIs
StatePublished - 1 Apr 2017
Externally publishedYes

Keywords

  • binding energy
  • delta doping
  • impurities
  • quantum wells

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