Quantum confinement effects on optical properties of ZnO quantum dots

N. Tit, S. Dagher, A. Ayesh, Yousef 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: Advanced Materials - TechConnect Briefs 2015
PublisherTaylor and Francis Inc.
Pages87-90
Number of pages4
Volume1
ISBN (Electronic)9781498747271
Publication statusPublished - 2015
Externally publishedYes
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: 14 Jun 201517 Jun 2015

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
CountryUnited States
CityWashington
Period14/6/1517/6/15

Fingerprint

Quantum Dots
Quantum confinement
Valence bands
Genetic Recombination
Semiconductor quantum dots
Optical properties
Electrons
Excitons
Photoluminescence
LDS 751

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

Cite this

Tit, N., Dagher, S., Ayesh, A., & Haik, Y. (2015). Quantum confinement effects on optical properties of ZnO quantum dots. In NSTI: Advanced Materials - TechConnect Briefs 2015 (Vol. 1, pp. 87-90). Taylor and Francis Inc..

Quantum confinement effects on optical properties of ZnO quantum dots. / Tit, N.; Dagher, S.; Ayesh, A.; Haik, Yousef.

NSTI: Advanced Materials - TechConnect Briefs 2015. Vol. 1 Taylor and Francis Inc., 2015. p. 87-90.

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

Tit, N, Dagher, S, Ayesh, A & Haik, Y 2015, Quantum confinement effects on optical properties of ZnO quantum dots. in NSTI: Advanced Materials - TechConnect Briefs 2015. vol. 1, Taylor and Francis Inc., pp. 87-90, 10th 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, 14/6/15.
Tit N, Dagher S, Ayesh A, Haik Y. Quantum confinement effects on optical properties of ZnO quantum dots. In NSTI: Advanced Materials - TechConnect Briefs 2015. Vol. 1. Taylor and Francis Inc. 2015. p. 87-90
Tit, N. ; Dagher, S. ; Ayesh, A. ; Haik, Yousef. / Quantum confinement effects on optical properties of ZnO quantum dots. NSTI: Advanced Materials - TechConnect Briefs 2015. Vol. 1 Taylor and Francis Inc., 2015. pp. 87-90
@inproceedings{f90b9f13a631425ba724411691675c24,
title = "Quantum confinement effects on optical properties of ZnO quantum dots",
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.",
keywords = "Oscillator strength, Phtoluminescence, Radiative recombination, ZnO quantum dots and nanocrystals",
author = "N. Tit and S. Dagher and A. Ayesh and Yousef Haik",
year = "2015",
language = "English",
volume = "1",
pages = "87--90",
booktitle = "NSTI: Advanced Materials - TechConnect Briefs 2015",
publisher = "Taylor and Francis Inc.",

}

TY - GEN

T1 - Quantum confinement effects on optical properties of ZnO quantum dots

AU - Tit, N.

AU - Dagher, S.

AU - Ayesh, A.

AU - Haik, Yousef

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Oscillator strength

KW - Phtoluminescence

KW - Radiative recombination

KW - ZnO quantum dots and nanocrystals

UR - http://www.scopus.com/inward/record.url?scp=84983283658&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983283658&partnerID=8YFLogxK

M3 - Conference contribution

VL - 1

SP - 87

EP - 90

BT - NSTI: Advanced Materials - TechConnect Briefs 2015

PB - Taylor and Francis Inc.

ER -