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Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions

In recent years, epitaxial growth of self-assembled quantum dots has offered a way to incorporate new properties into existing solid state devices. Although the droplet heteroepitaxy method is relatively complex, it is quite relaxed with respect to the material combinations that can be used. This of...

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Autores principales: Cohen, Eyal, Elfassy, Naomi, Koplovitz, Guy, Yochelis, Shira, Shusterman, Sergey, Kumah, Divine P., Yacoby, Yizhak, Clarke, Roy, Paltiel, Yossi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274305/
https://www.ncbi.nlm.nih.gov/pubmed/22346663
http://dx.doi.org/10.3390/s111110624
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author Cohen, Eyal
Elfassy, Naomi
Koplovitz, Guy
Yochelis, Shira
Shusterman, Sergey
Kumah, Divine P.
Yacoby, Yizhak
Clarke, Roy
Paltiel, Yossi
author_facet Cohen, Eyal
Elfassy, Naomi
Koplovitz, Guy
Yochelis, Shira
Shusterman, Sergey
Kumah, Divine P.
Yacoby, Yizhak
Clarke, Roy
Paltiel, Yossi
author_sort Cohen, Eyal
collection PubMed
description In recent years, epitaxial growth of self-assembled quantum dots has offered a way to incorporate new properties into existing solid state devices. Although the droplet heteroepitaxy method is relatively complex, it is quite relaxed with respect to the material combinations that can be used. This offers great flexibility in the systems that can be achieved. In this paper we review the structure and composition of a number of quantum dot systems grown by the droplet heteroepitaxy method, emphasizing the insights that these experiments provide with respect to the growth process. Detailed structural and composition information has been obtained using surface X-ray diffraction analyzed by the COBRA phase retrieval method. A number of interesting phenomena have been observed: penetration of the dots into the substrate (“nano-drilling”) is often encountered; interdiffusion and intermixing already start when the group III droplets are deposited, and structure and composition may be very different from the one initially intended.
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spelling pubmed-32743052012-02-15 Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions Cohen, Eyal Elfassy, Naomi Koplovitz, Guy Yochelis, Shira Shusterman, Sergey Kumah, Divine P. Yacoby, Yizhak Clarke, Roy Paltiel, Yossi Sensors (Basel) Review In recent years, epitaxial growth of self-assembled quantum dots has offered a way to incorporate new properties into existing solid state devices. Although the droplet heteroepitaxy method is relatively complex, it is quite relaxed with respect to the material combinations that can be used. This offers great flexibility in the systems that can be achieved. In this paper we review the structure and composition of a number of quantum dot systems grown by the droplet heteroepitaxy method, emphasizing the insights that these experiments provide with respect to the growth process. Detailed structural and composition information has been obtained using surface X-ray diffraction analyzed by the COBRA phase retrieval method. A number of interesting phenomena have been observed: penetration of the dots into the substrate (“nano-drilling”) is often encountered; interdiffusion and intermixing already start when the group III droplets are deposited, and structure and composition may be very different from the one initially intended. Molecular Diversity Preservation International (MDPI) 2011-11-08 /pmc/articles/PMC3274305/ /pubmed/22346663 http://dx.doi.org/10.3390/s111110624 Text en © 2011 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 license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Review
Cohen, Eyal
Elfassy, Naomi
Koplovitz, Guy
Yochelis, Shira
Shusterman, Sergey
Kumah, Divine P.
Yacoby, Yizhak
Clarke, Roy
Paltiel, Yossi
Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions
title Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions
title_full Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions
title_fullStr Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions
title_full_unstemmed Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions
title_short Surface X-Ray Diffraction Results on the III–V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions
title_sort surface x-ray diffraction results on the iii–v droplet heteroepitaxy growth process for quantum dots: recent understanding and open questions
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274305/
https://www.ncbi.nlm.nih.gov/pubmed/22346663
http://dx.doi.org/10.3390/s111110624
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