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...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2011-11-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/11/11/10624/ |
| _version_ | 1818005566723719168 |
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| author | Yossi Paltiel Roy Clarke Yizhak Yacoby Divine P. Kumah Sergey Shusterman Shira Yochelis Guy Koplovitz Naomi Elfassy Eyal Cohen |
| author_facet | Yossi Paltiel Roy Clarke Yizhak Yacoby Divine P. Kumah Sergey Shusterman Shira Yochelis Guy Koplovitz Naomi Elfassy Eyal Cohen |
| author_sort | Yossi Paltiel |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-14T04:46:50Z |
| format | Article |
| id | doaj.art-92bcf5bc0da84c68a750c43f857ef8b6 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T04:46:50Z |
| publishDate | 2011-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-92bcf5bc0da84c68a750c43f857ef8b62022-12-22T02:11:27ZengMDPI AGSensors1424-82202011-11-011111106241063710.3390/s111110624Surface X-Ray Diffraction Results on the III-V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open QuestionsYossi PaltielRoy ClarkeYizhak YacobyDivine P. KumahSergey ShustermanShira YochelisGuy KoplovitzNaomi ElfassyEyal CohenIn 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.http://www.mdpi.com/1424-8220/11/11/10624/quantum dotsdroplet-heteroepitaxysurface X-ray diffractiondirect methodsMOVPE |
| spellingShingle | Yossi Paltiel Roy Clarke Yizhak Yacoby Divine P. Kumah Sergey Shusterman Shira Yochelis Guy Koplovitz Naomi Elfassy Eyal Cohen Surface X-Ray Diffraction Results on the III-V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions Sensors quantum dots droplet-heteroepitaxy surface X-ray diffraction direct methods MOVPE |
| 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 | quantum dots droplet-heteroepitaxy surface X-ray diffraction direct methods MOVPE |
| url | http://www.mdpi.com/1424-8220/11/11/10624/ |
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