Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy

We investigate the quantum confinement effects on excitons in several types of strain-free GaAs/Al [Formula: see text] Ga [Formula: see text] As droplet epitaxy (DE) quantum dots (QDs). By performing comparative analyses of energy-dispersive X-ray spectroscopy with the aid of a three-dimensional (3D...

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Autores principales: Yeo, Inah, Kim, Doukyun, Lee, Kyu-Tae, Kim, Jong Su, Song, Jin Dong, Park, Chul-Hong, Han, Il Ki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407363/
https://www.ncbi.nlm.nih.gov/pubmed/32630839
http://dx.doi.org/10.3390/nano10071301
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author Yeo, Inah
Kim, Doukyun
Lee, Kyu-Tae
Kim, Jong Su
Song, Jin Dong
Park, Chul-Hong
Han, Il Ki
author_facet Yeo, Inah
Kim, Doukyun
Lee, Kyu-Tae
Kim, Jong Su
Song, Jin Dong
Park, Chul-Hong
Han, Il Ki
author_sort Yeo, Inah
collection PubMed
description We investigate the quantum confinement effects on excitons in several types of strain-free GaAs/Al [Formula: see text] Ga [Formula: see text] As droplet epitaxy (DE) quantum dots (QDs). By performing comparative analyses of energy-dispersive X-ray spectroscopy with the aid of a three-dimensional (3D) envelope-function model, we elucidate the individual quantum confinement characteristics of the QD band structures with respect to their composition profiles and the asymmetries of their geometrical shapes. By precisely controlling the exciton oscillator strength in strain-free QDs, we envisage the possibility of tailoring light-matter interactions to implement fully integrated quantum photonics based on QD single-photon sources (SPSs).
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spelling pubmed-74073632020-08-11 Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy Yeo, Inah Kim, Doukyun Lee, Kyu-Tae Kim, Jong Su Song, Jin Dong Park, Chul-Hong Han, Il Ki Nanomaterials (Basel) Article We investigate the quantum confinement effects on excitons in several types of strain-free GaAs/Al [Formula: see text] Ga [Formula: see text] As droplet epitaxy (DE) quantum dots (QDs). By performing comparative analyses of energy-dispersive X-ray spectroscopy with the aid of a three-dimensional (3D) envelope-function model, we elucidate the individual quantum confinement characteristics of the QD band structures with respect to their composition profiles and the asymmetries of their geometrical shapes. By precisely controlling the exciton oscillator strength in strain-free QDs, we envisage the possibility of tailoring light-matter interactions to implement fully integrated quantum photonics based on QD single-photon sources (SPSs). MDPI 2020-07-02 /pmc/articles/PMC7407363/ /pubmed/32630839 http://dx.doi.org/10.3390/nano10071301 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yeo, Inah
Kim, Doukyun
Lee, Kyu-Tae
Kim, Jong Su
Song, Jin Dong
Park, Chul-Hong
Han, Il Ki
Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy
title Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy
title_full Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy
title_fullStr Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy
title_full_unstemmed Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy
title_short Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy
title_sort comparative chemico-physical analyses of strain-free gaas/al(0.3)ga(0.7)as quantum dots grown by droplet epitaxy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407363/
https://www.ncbi.nlm.nih.gov/pubmed/32630839
http://dx.doi.org/10.3390/nano10071301
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