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Strong Photoluminescence Emission from an Excited-Subband Exciton State in a GaAs/AlxGa1−xAs Triple Quantum Well with Different Well Thicknesses
http://hdl.handle.net/10228/411
http://hdl.handle.net/10228/41181b4f74c-62e8-49a9-afe1-80dbf9c6f314
名前 / ファイル | ライセンス | アクション |
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mss11as6.pdf (100.3 kB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||
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公開日 | 2007-11-26 | |||||||||||
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 | Strong Photoluminescence Emission from an Excited-Subband Exciton State in a GaAs/AlxGa1−xAs Triple Quantum Well with Different Well Thicknesses | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
佐竹, 昭泰
× 佐竹, 昭泰
WEKO
252
× Shiraishi, N× Takata, N× 藤原, 賢三× Schrottke, L× Grahn, H.T. |
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抄録 | ||||||||||||
内容記述タイプ | Abstract | |||||||||||
内容記述 | We have studied the photoluminescence (PL) properties of a GaAs/AlxGa1−xAs quantum well (QW) systemconsisting of three QW’s with different thicknesses, in which the widest one (7.8 nm) has an excited-subband excitonstate located slightly below the barrier band edge. Using above-barrier excitation with a power density of about10 W/cm2 at 13 K, a strong PL emission peak appears on the high-energy side of the three PL peaks originating from theground-state exciton transitions of the three QW’s. This high-energy PL peak with an intensity comparable to the one ofthe other three peaks is located near an excited-subband (n=2) exciton state of the widest QW. By investigating theposition dependence of the PL spectra across a 2-inch wafer, which exhibits a decreasing Al mole fraction x from thecenter to the edge, the PL intensity of the high-energy peak can be correlated with the one of the ground-state in thewidest QW. This correlation indicates that this high-energy PL peak is most likely related to the n=2 exciton state of thewidest QW because of the energy alignment of the excited subband state relative to the barrier band edge. | |||||||||||
書誌情報 |
Physica E: Low-dimensional Systems and Nanostructures 巻 21, 号 2-4, p. 641-645, 発行日 2004-03 |
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出版社 | ||||||||||||
出版者 | Elsevier | |||||||||||
DOI | ||||||||||||
関連タイプ | isVersionOf | |||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | https://doi.org/10.1016/j.physe.2003.11.095 | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 1386-9477 | |||||||||||
著作権関連情報 | ||||||||||||
権利情報 | Copyright (c) 2003 Elsevier B.V. | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | Photoluminescence | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | Quantum well | |||||||||||
キーワード | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | Excited-subband exciton state | |||||||||||
出版タイプ | ||||||||||||
出版タイプ | AM | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||
査読の有無 | ||||||||||||
値 | yes | |||||||||||
著者別名 | ||||||||||||
姓名 | Satake, Akihiro | |||||||||||
言語 | en | |||||||||||
姓名 | 佐竹, 昭泰 | |||||||||||
言語 | ja | |||||||||||
姓名 | サタケ, アキヒロ | |||||||||||
言語 | ja-Kana | |||||||||||
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 | |||||||||||
情報源 | ||||||||||||
識別子タイプ | URI | |||||||||||
関連識別子 | http://www.sciencedirect.com/science/journal/13869477 | |||||||||||
関連名称 | http://www.sciencedirect.com/science/journal/13869477 |