Quantum confinement effects on optical properties of ZnO quantum dots

N. Tit, S. Dagher, A. Ayesh, Y. Haik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The qixantum confinement (QC) effects in ZnO quantum dots embedded in MgO matrix are theoretically investigated using tight-binding method. The effects on bound states and optical gap are studied versus the QD size and valence-band offset (VBO). Excellent agreement was obtained between theoretical results and available photoluminescence (PL) data versus dot size, especially when VBO φ 1.0 eV, which correspond to maximal compromised confinement characters of both holes and electrons. The strong QC of excitons would further enhance the oscillator strength and recombination rate.

Original languageEnglish
Title of host publicationNSTI
Subtitle of host publicationAdvanced Materials - TechConnect Briefs 2015
EditorsBart Romanowicz, Matthew Laudon
PublisherTaylor and Francis Inc.
Pages87-90
Number of pages4
ISBN (Electronic)9781498747271
Publication statusPublished - 2015
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference - Washington, United States
Duration: Jun 14 2015Jun 17 2015

Publication series

NameNSTI: Advanced Materials - TechConnect Briefs 2015
Volume1

Other

Other10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference
Country/TerritoryUnited States
CityWashington
Period6/14/156/17/15

Keywords

  • Oscillator strength
  • Phtoluminescence
  • Radiative recombination
  • ZnO quantum dots and nanocrystals

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Fluid Flow and Transfer Processes
  • Biotechnology
  • Fuel Technology

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