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タイトル: | Silicon Eelectrodeposition in a water-soluble KF–KCl Molten salt: effects of temperature and current density |
著者: | Yasuda, Kouji Saeki, Kazumi Kato, Tomonori Hagiwara, Rika https://orcid.org/0000-0002-7234-3980 (unconfirmed) Nohira, Toshiyuki https://orcid.org/0000-0002-4053-554X (unconfirmed) |
著者名の別形: | 安田, 幸司 萩原, 理加 野平, 俊之 |
キーワード: | Electrodeposition Molten Salts - High temperature molten salts Semiconductors - Silicon Electrodeposition Molten salt Silicon |
発行日: | 28-Dec-2018 |
出版者: | The Electrochemical Society |
誌名: | Journal of the Electrochemical Society |
巻: | 165 |
号: | 16 |
開始ページ: | D825 |
終了ページ: | D831 |
抄録: | The effects of temperature and current density on the electrodeposition of Si films in molten KF–KCl–K₂SiF₆ were investigated at 923–1073 K. The peak current density of Si deposition in cyclic voltammetry increased as the temperature rose. The diffusion coefficient of Si (IV) ions measured by chronoamperometry increased through a rise in temperature. The activation energy for the diffusion of Si (IV) ions, 28.0 kJ mol⁻¹, agreed with that for the viscosity of KF and KCl. The crystallinity of the Si films prepared by galvanostatic electrolysis on Ag substrates was measured based on electron backscatter diffraction. The largest crystallite size in the deposited Si increased with the deposition temperature, from a submicron size at 923 K, to several tens of microns at 1073 K. Moreover, even at the same temperature of 1073 K, larger crystallite sizes were observed for the Si deposit at 100 mA cm⁻² as compared with that at 300 mA cm⁻², which was explained based on the crystallization rate of Si. |
著作権等: | © The Electrochemical Society, Inc. 2018. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc. 2018 volume 165, issue 16, D825-D831. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/245273 |
DOI(出版社版): | 10.1149/2.1141816jes |
出現コレクション: | 学術雑誌掲載論文等 |
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