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Enhanced photo-sensitivity in a Si photodetector using a near-field assisted excitation
http://hdl.handle.net/2241/00157757
http://hdl.handle.net/2241/00157757b453f723-4fb8-40b6-bee7-94ace7e5a72d
名前 / ファイル | ライセンス | アクション |
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CP_2-62 (1.4 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2019-09-30 | |||||
タイトル | ||||||
タイトル | Enhanced photo-sensitivity in a Si photodetector using a near-field assisted excitation | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
矢花, 一浩
× 矢花, 一浩× Yatsui, T.× Okada, S.× Takemori, T.× Sato, T.× Saichi, K.× Ogamoto, T.× Chiashi, S.× Maruyama, S.× Noda, M.× Iida, K.× Nobusada, K. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Silicon is an indispensable material in electric device technology. However, Si is an indirect bandgap material; therefore, its excitation efficiency, which requires phonon assistance, is low under propagating far-field light. To improve the excitation efficiency, herein we performed optical near-field excitation, which is confined in a nano-scale, where the interband transitions between different wave numbers are excited according to the uncertainty principle; thus, optical near-field can directly excite the carrier in the indirect bandgap. To evaluate the effect of optical near-field confined in a nano-scale, we fabricate the lateral Si p-n junction with Au nanoparticles as sources to generate the field confinement. We observed a 47.0% increase in the photo-sensitivity rate. In addition, by using the thin lateral p-n junction, which eliminates the far-field excitation, we confirmed a 42.3% increase in the photo-sensitivity rate. | |||||
書誌情報 |
Communications Physics 巻 2, p. 62, 発行日 2019-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2399-3650 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1038/s42005-019-0173-1 | |||||
権利 | ||||||
権利情報 | © The Author(s) 2019 | |||||
権利 | ||||||
権利情報 | This article is licensed under a Creative CommonsAttribution 4.0 International License, which permits use, sharing,adaptation, distribution and reproduction in any medium or format, as long as you giveappropriate credit to the original author(s) and the source, provide a link to the CreativeCommons license, and indicate if changes were made. The images or other third partymaterial in this article are included in the article’s Creative Commons license, unlessindicated otherwise in a credit line to the material. If material is not included in thearticle’s Creative Commons license and your intended use is not permitted by statutoryregulation or exceeds the permitted use, you will need to obtain permission directly fromthe copyright holder. To view a copy of this license, visithttp://creativecommons.org/licenses/by/4.0/. | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | Nature |