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Dynamics of unidirectional phonon-assisted transport of photoexcited carriers in step-graded Inx(Al0.17Ga0.83)1-xAs/Al0.17Ga0.83As multiple quantum wells
http://hdl.handle.net/10228/641
http://hdl.handle.net/10228/6414877794a-9261-41e5-bf76-d79918067557
名前 / ファイル | ライセンス | アクション |
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e205322.pdf (745.6 kB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||
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公開日 | 2008-01-09 | |||||
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 | |||||
タイトル | ||||||
タイトル | Dynamics of unidirectional phonon-assisted transport of photoexcited carriers in step-graded Inx(Al0.17Ga0.83)1-xAs/Al0.17Ga0.83As multiple quantum wells | |||||
言語 | ||||||
言語 | eng | |||||
著者 |
Machida, S
× Machida, S× Matsuo, M× 藤原, 賢三× Folkenberg, J.R.× Hvam, J.M. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The dynamics of perpendicular transport of photoexcited carriers assisted by phonon scattering is investigated in a novel step-graded Inx(Al0.17Ga0.83)1-xAs quantum-well heterostructure by measuring the temperature dependence of spectrally and temporally resolved photoluminescence (PL). When builtin potential gradients are present in the quantum-well heterostructure due to variations in the In mole fraction (x) in the well, carriers that are thermally released by the particular well move unidirectionally from shallower to deeper wells. That is, asymmetric unidirectional motion of photoexcited carriers is possible via phonon-assisted activation above the barrier band-edge state. We have directly measured this perpendicular motion of photoexcited carriers by monitoring the transient PL signals from the different wells, which are spectrally separated. A rate equation analysis rigorously explains the dynamical changes of the PL signal intensities from the quantum wells as a function of lattice temperature. Our study of PL dynamics proves the asymmetric perpendicular flow of photoexcited carriers and the capture by the deeper quantum wells, providing firm evidence for the dynamical carrier flow and capture processes in the novel heterostructure. | |||||
書誌情報 |
Physical review B. Condensed matter and materials physics 巻 67, 号 20, p. 205322-1-205322-7, 発行日 2003-05-27 |
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出版社 | ||||||
出版者 | Published by the American Physical Society through the American Institute of Physics | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevB.67.205322 | |||||
論文ID(NAID) | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | NAID | |||||
関連識別子 | http://ci.nii.ac.jp/naid/120002440819 | |||||
日本十進分類法 | ||||||
主題Scheme | NDC | |||||
主題 | 425 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11187113 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1098-0121 | |||||
著作権関連情報 | ||||||
権利情報 | Copyright © 2003 American Physical Society | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
査読の有無 | ||||||
値 | yes | |||||
資料タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal Article | |||||
著者別名 | ||||||
姓名 | Fujiwara, Kenzo | |||||
言語 | en | |||||
姓名 | 藤原, 賢三 | |||||
言語 | ja | |||||
姓名 | フジワラ, ケンゾウ | |||||
言語 | ja-Kana | |||||
著者所属 | ||||||
Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||
著者所属 | ||||||
Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||
著者所属 | ||||||
Kyushu Institute of Technology, Tobata, Kitakyushu 804-8550, Japan | ||||||
著者所属 | ||||||
Crystal Fibre A/S, Blokken 84, DK-3460 Birkerend, Denmark | ||||||
著者所属 | ||||||
Research Center COM, Technical University of Denmark, Building 349, DK-2800 Kgs. Lyngby, Denmark | ||||||
情報源 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevB.67.205322 | |||||
情報源 | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.aps.org/ | |||||
関連名称 | http://www.aps.org/ |