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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...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2011
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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. |
format | Online Article Text |
id | pubmed-3274305 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
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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