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Pulling apart photoexcited electrons by photoinducing an in-plane surface electric field
https://oist.repo.nii.ac.jp/records/877
https://oist.repo.nii.ac.jp/records/8775868f997-45a8-43cd-8438-267d9e2475a8
名前 / ファイル | ライセンス | アクション |
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eaat9722.full (1.0 MB)
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Creative Commons Attribution-NonCommercial 4.0 International
(http://creativecommons.org/Licenses/by-nc/4.0/) |
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-05-20 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Pulling apart photoexcited electrons by photoinducing an in-plane surface electric field | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Wong, E Laine
× Wong, E Laine× Winchester, Andrew J.× Pareek, Vivek× Madéo, Julien× Man, Michael K. L.× Dani, Keshav M. |
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書誌情報 |
en : Science Advances 巻 4, 号 9, p. eaat9722, 発行日 2018-09-07 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The study and control of spatiotemporal dynamics of photocarriers at the interfaces of materials have led to transformative modern technologies, such as light-harvesting devices and photodetectors. At the heart of these technologies is the ability to separate oppositely charged electrons and holes. Going further, the ability to separate like charges and manipulate their distribution could provide a powerful new paradigm in opto-electronic control, more so when done on ultrafast time scales. However, this requires one to selectively address subpopulations of the photoexcited electrons within the distribution—a challenging task, particularly on ultrafast time scales. By exploiting the spatial intensity variations in an ultrafast light pulse, we generate local surface fields within the optical spot of a doped semiconductor and thereby pull apart the electrons into two separate distributions. Using time-resolved photoemission microscopy, we directly record a movie of this redistribution process lasting a few hundred picoseconds, which we control via the spatial profile and intensity of the photoexciting pulse. Our quantitative model explains the underlying charge transport phenomena, thus providing a roadmap to the more generalized ability to manipulate photocarrier distributions with high spatiotemporal resolution. | |||||
出版者 | ||||||
出版者 | American Association for the Advancement of Science | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2375-2548 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/30202786 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1126/sciadv.aat9722 | |||||
権利 | ||||||
権利情報 | © 2018 The Author(s), some rights reserved; exclusive licensee American Association for the Advancement of Science. | |||||
情報源 | ||||||
関連名称 | https://creativecommons.org/licenses/by-nc/4.0/ | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://advances.sciencemag.org/content/4/9/eaat9722 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |