| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-11-25 |
| タイトル |
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タイトル |
Atomic-Scale Multimodal Characterization of Self-Assembled InAs/InGaAlAs Quantum Dots |
| 言語 |
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言語 |
eng |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Indium arsenide |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Lattices |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Layers |
| キーワード |
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主題Scheme |
Other |
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主題 |
Quantum dots |
| キーワード |
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主題Scheme |
Other |
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主題 |
Scanning transmission electron microscopy |
| 資源タイプ |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
| 著者 |
Yamaguchi, Yudai
Inaba, Yuta
Arai, Ryoji
Kanitani, Yuya
Kudo, Yoshihiro
Shiomi, Michinori
Kasahara, Daiji
Yokozeki, Mikihiro
Fuutagawa, Noriyuki
Uzuhashi, Jun
Ohkubo, Tadakatsu
Hono, Kazuhiro
Akahane, Kouichi
Yamamoto, Naokatsu
冨谷, 茂隆
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Self-assembled quantum dots (QDs) are potential candidates for photoelectric and photovoltaic devices, because of their discrete energy levels. The characterization of QDs at the atomic level using a multimodal approach is crucial to improving device performance because QDs are nanostructures with highly correlated structural parameters. In this study, scanning transmission electron microscopy, geometric phase analysis, and atom probe tomography were employed to characterize structural parameters such as the shape, strain, and composition of self-assembled InAs-QDs with InGaAlAs spacer layers. The measurements revealed characteristic AlAs-rich regions above the QDs and InAs-rich regions surrounding the QD columns, which can be explained by the relationship between the effect of strain and surface curvature around the QD. The methodology described in this study accelerates the development of future QD devices because its multiple perspectives reveal phenomena such as atomic-scale segregations and allow for more detailed discussions of the mechanisms of these phenomena. |
| 書誌情報 |
en : The Journal of Physical Chemistry Letters
巻 15,
号 14,
p. 3772-3778,
ページ数 7,
発行日 2024-04-11
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| 出版者 |
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出版者 |
American Chemical Society |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1948-7185 |
| 出版者版DOI |
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関連タイプ |
isReplacedBy |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1021/acs.jpclett.3c03507 |
| 出版者版URI |
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関連タイプ |
isReplacedBy |
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識別子タイプ |
URI |
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関連識別子 |
https://pubs.acs.org/doi/full/10.1021/acs.jpclett.3c03507 |
| 権利 |
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権利情報Resource |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
権利情報 |
Copyright © 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY-NC-ND 4.0 . |
| 著者版フラグ |
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出版タイプ |
NA |
