Morphological and structural control of nanostructures by simple thermal treatment and its application to thermoelectric power generation

2016 Fiscal Year Annual Research Report

• Project/Area Number: 26420270
• Research Institution: Shizuoka University
• Principal Investigator: 立岡 浩一 静岡大学, 工学部, 教授 (40197380)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: シリサイド / 化学気相成長法 / 結晶成長 / ナノワイヤ / ナノシート / ナノ構造制御 / 熱電素子 / 自然エネルギー

Outline of Annual Research Achievements

Si基板上にHF/AgNO3を用いてSiアレイを作製した．HF/AgNO3比，濃度，処理時間，溶液の容量を変化させ最も長いSiアレイが作製される条件を見出した．さらにそれをMg蒸気下にて熱処理を行う事によりMg2Siワイヤ束を作製した．このMg2Siワイヤ束のホール効果による電気特性評価，ゼーベック効果測定を行うとともに勘弁な一極の熱電素子を試作した．
CaSi2よりCrCl2，FeCl2, FeCl3やNH4Clを用いてCaを脱離する事によりSiナノシートを作製した．また金属原子の脱離のためフィチン酸，クエン酸，リンゴ酸の酸性溶液を用いた．生成したSiナノシート束のラマンスペクトルはバルクSiのそれとは異なる特性を示し何らかの構造緩和が起こっている事が示された．また，カソードルミネッセンス，フーリエ変換型赤外分光 (FTIR)，X線光電分光法（XPS）によりナノ構造の表面状態を評価した．Ca原子の脱離の作用，効率の違いによりFTIRスペクトルに違いが生じた．処理方法により表面状態を改変できる事を示唆している．
またテンプレートとして用いるシリサイドとしてCaSi2の他にMg2Si, SrSi2, BaSi2を用いSi系ナノシートを作製した．異なるSi骨格を有するシリサイドを用いる事によりCaSi2の場合とは異なるモルフォロジーを有するSi系ナノシート束を得た．作製したナノ構造それぞれの，ホトルミネッセンスを測定しバンドル化による量子効果を検証した．これよりSiナノシートはより薄い厚さ１～２nm程度のSi層からなる超格子構造を有する事が示唆された．またこのSiナノシートにMoを添加しh-MoSi2シート束も作製した．適切な成長環境とソース，テンプレートの選択によりSi系ナノワイヤ，ナノシートの結晶構造，組成，モルフォロジーを制御する簡易な成長プロセスを構築した．

Remarks

解説記事２件，
Si系ナノシート束からなる粉末の作製 立岡浩一，佐々木謙太, 中山誠，引地啓太，熊澤佑貴，孟祥，袁佩玲 工業材料　『高機能セラミックスと粉体技術の最新潮流をさぐる』
Si系ナノワイヤおよびナノシートの形状制御 立岡浩一，佐々木謙太, 中山誠，引地啓太，熊澤佑貴，孟祥，袁佩玲 ケミカルエンジニアリング　　特集/新規なナノシート研究と応用

Research Products

• [Journal Article] Synthesis of flower-like Si nanostructures on Si substrates (2017)
  • Author(s): Peiling Yuan, Ryo Tamaki, Hiroaki Suzuki, Kenta Sasaki, Makoto Nakayama, Yuya Saito, Shinya Kusazaki, Yuki Kumazawa, Xiang Meng, Nazmul Ahsan, Yoshitaka Okada and Hirokazu Tatsuoka
  • Journal Title: Jpn. J. Appl. Phys. Volume: 56 Pages: 05DE05
  • DOI: 10.7567/JJAP.56.05DE05
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synthesis of crystalline Si-based nanosheets by extraction of Ca from CaSi2 in inositol hexakisphosphate solution (2017)
  • Author(s): Xiang Meng, Kenta Sasaki, Koki Sano, Peiling Yuan, and Hirokazu Tatsuoka
  • Journal Title: Jpn. J. Appl. Phys. Volume: 56 Pages: 05DE02
  • DOI: 10.7567/JJAP.56.05DE02
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Ordered CaSi2 microwall arrays on Si substrates induced by the Kirkendall effect (2017)
  • Author(s): Xiang Meng, Akiko Ueki, Hirokazu Tatsuoka, and Hiroshi Itahara
  • Journal Title: Chemistry - A European Journal Volume: 23 Pages: 3098-3106
  • DOI: 10.1002/chem.201605133
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] テンプレートとしてシリサイド粉末を用いた酸性溶液中でのSi系ナノシートからなる粉末の作製 (Syntheses of Powders Consisting Si-based Nanosheets Using Silicide Powders as Templates in Acid Solution) (2016)
  • Author(s): 熊澤 佑貴，佐々木 謙太，袁 佩玲，孟 祥，立岡 浩一
  • Journal Title: 粉体工学会誌 Volume: 53 Pages: 797-803
  • DOI: 10.4164/sptj.53.797
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synthesis and structural property of Si nanosheets connected to Si nanowires using MnCl2/Si powder source (2016)
  • Author(s): Erchao Meng, Akiko Ueki, Xiang Meng, Hiroaki Suzuki, Hiroshi Itahara, and Hirokazu Tatsuoka
  • Journal Title: Applied Surface Science Volume: 378 Pages: 460-466
  • DOI: 10.1016/j.apsusc.2016.03.103
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Characteristic Modification of Catalysts by Use of a Chloride Source (2016)
  • Author(s): Xiang Meng, Hiroaki Suzuki, Kenta Sasaki and Hirokazu Tatsuoka,
  • Journal Title: Solid State Phenomena, Physics and Technology of Nanostructured Materials IV Volume: 247 Pages: 106-110
  • DOI: 10.4028/www.scientific.net/SSP.247.106
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] ナノ構造制御によるシリコン及びシリサイドナノシートの作製 (2016)
  • Author(s): 立岡浩一，佐々木謙太，熊澤祐貴，孟祥，袁佩玲
  • Journal Title: 日本材料科学会誌 材料の科学と工学 Volume: 53 Pages: 86-89
  • Peer Reviewed
• [Journal Article] Vertical gradient solution growth of N-type Si0.73Ge0.27 bulk crystals with homogeneous composition and its thermoelectric properties (2016)
  • Author(s): M. Omprakash, M. Arivanandhan, M. Sabarinathan, T. Koyama, Y. Momose, H. Ikeda, H. Tatsuoka, D.K. Aswal, S. Bhattacharya, Y. Inatomi, Y. Hayakawa
  • Journal Title: Journal of Crystal Growth Volume: 442 Pages: 102-109
  • DOI: 10.1016/j.jcrysgro.2016.02.025
  • Peer Reviewed
• [Presentation] Morphological and Crystalline Evolution of Si-Based Nanowires and Nanosheets (2017)
  • Author(s): Hirokazu Tatsuoka, Yuki Kumazawa, Shinya Kusazaki, Yuya Saito, Nanae Atsumi, Peiling Yuan
  • Organizer: International Conference organized by Department of Physics and Nanotechnology (ICONN 2017)
  • Place of Presentation: SRM University, Chennai Tamil Nadu, India
  • Year and Date: 2017-08-09 – 2017-08-11
  • Int'l Joint Research / Invited
• [Presentation] STRUCTURAL CHARACTERIZATION OF SI-BASED NANOWIRE AND NANOSHEET BUNDLES (2017)
  • Author(s): P. Yuan , K. Sasaki, M. Nakayama, Y. Kumazawa, K. Hikichi and H. Tatsuoka
  • Organizer: NANOMEETING-2017
  • Place of Presentation: Belarusian State University of Informatics and Radioelectronics, Minsk, Belarus
  • Year and Date: 2017-05-30 – 2017-06-02
  • Int'l Joint Research / Invited
• [Presentation] Evolutionary Shape Modification of Semiconductor Nanostructures (2017)
  • Author(s): Yuan, P, Saito, Y, Kusazaki, S, Kumazawa Y, Atsumi N, Tatsuoka H
  • Organizer: International Conference on Energy Materials and Nanotechnology (ICEM3-2017）
  • Place of Presentation: Zhengzhou University, Zhengzhou, Henan, China
  • Year and Date: 2017-04-14 – 2017-04-16
  • Int'l Joint Research / Invited
• [Presentation] Photoluminescence Property of Si-based nanosheet bundles rooted on Si substrates (2017)
  • Author(s): Peiling Yuan、Tamaki Ryo、Sasaki Kenta、Nakayama Makoto、Saito Yuya、Kusazaki Shinya、Kumazawa Yuki、Xiang Meng、Ahsan Nazmul、Okada Yoshitaka、Tatsuoka Hirokazu
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜，横浜市，神奈川県
  • Year and Date: 2017-03-14 – 2017-03-17
• [Presentation] MgCl2溶融塩を用いたSi系ナノシート束の作製 (2017)
  • Author(s): 熊澤 佑貴、立岡 浩一
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜，横浜市，神奈川県
  • Year and Date: 2017-03-14 – 2017-03-17
• [Presentation] CaSi2をテンプレートとしたNH4Cl処理によるSi系ナノシート束の作製 (2017)
  • Author(s): 齋藤 優弥、佐々木 謙太、熊澤 佑貴、渥美 七虹、引地 啓太、袁 佩玲、立岡 浩一
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜，横浜市，神奈川県
  • Year and Date: 2017-03-14 – 2017-03-17
• [Presentation] ボールミリング法を用いたSi系ナノシート束の作製 (2017)
  • Author(s): 渥美 七虹、佐々木 謙太、袁 佩玲、立岡 浩一
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜，横浜市，神奈川県
  • Year and Date: 2017-03-14 – 2017-03-17
• [Presentation] Surface Characterization of Si-Based Nanosheets Synthesized from CaSi2 Using Metal Chlorides, IP6 and Acid Solutions (2017)
  • Author(s): Peiling Yuan, Kenta Sasaki, Yuki Kumazawa, Yuya Saito, Shinya Kusazaki, Keita Hikichi, Nanae Atsumi, Hirokazu Tatsuoka
  • Organizer: 電子デバイス界面テクノロジー研究会 ―材料・プロセス・デバイス特性の物理」 (第22回研究会)
  • Place of Presentation: 東レ研修センター，三島市，静岡県
  • Year and Date: 2017-02-20 – 2017-02-21
• [Presentation] Synthesis and Structural Control of Si-Based Nanowire and Nanosheet Bundles (2016)
  • Author(s): Hirokazu Tatsuoka, Kenta Sasaki, Makoto Nakayama, Yuki Kumazawa, Xiang Meng, Peiling Yuan
  • Organizer: International Conference on Materials Processing and Applications
  • Place of Presentation: VIT University, Vellore, India
  • Year and Date: 2016-12-14 – 2016-12-16
  • Int'l Joint Research / Invited
• [Presentation] Synthesis of Si Nanosheet Bundles by Extraction of Ca Atoms from CaSi2 Powders by Inositol Hexakisphosphate Solution (2016)
  • Author(s): X. Meng, K. Sasaki, Y. Kumazawa, P. Yuan, H. Tatsuoka
  • Organizer: 2016 International Conference on Solid State Devices and Materials (SSDM2016),
  • Place of Presentation: Tsukuba International congress center, Tsukuba, Japan
  • Year and Date: 2016-09-26 – 2016-09-29
  • Int'l Joint Research
• [Presentation] Syntheses of Si-based Nanostructures by Extraction of Metallic Atoms from Silicides in Solution (2016)
  • Author(s): P. Yuan, K. Ssasaki, Y. Kumazawa, X. Meng, H. Tatsuoka
  • Organizer: 第２８回シリサイド系半導体研究会
  • Place of Presentation: 新潟駅前カルチャーセンター，新潟市， 新潟県
  • Year and Date: 2016-09-16 – 2016-09-16
• [Presentation] 熱電応用のためのSi1-xGex及びMg2Si1-xGex結晶合成と特性評価 (2016)
  • Author(s): 高須 隆太郎、Omprakash Muthusamy、Misra Shantanu、志村 洋介、早川 泰弘、立岡 浩一
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 朱鷺メッセ，新潟市，新潟県
  • Year and Date: 2016-09-13 – 2016-09-16
• [Presentation] Two-dimensional Si-based nanostructures synthesized from CaSi2 on Si substrates under chlorides vapor (2016)
  • Author(s): X. Meng, K. Tsukamoto, K. Sasaki, H. Tatsuoka
  • Organizer: The 18th International Conference on Crystal Growth and Epitaxy (ICCGE18)
  • Place of Presentation: Nagoya Congress Center, Nagoya, Aichi
  • Year and Date: 2016-08-07 – 2016-08-12
  • Int'l Joint Research
• [Presentation] Synthesis of Si-based nanowires on insulating substrates (2016)
  • Author(s): Yuya Saito, Hiroaki Suzuki, Xiang Meng, Shinya Kusazaki, Hirokazu Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Synthesis of Mn-based Nanostructures on Mn Substrates (2016)
  • Author(s): Shinya Kusazaki, Hiroaki Suzuki, Xiang Meng, Yuya Saito, Hirokazu Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Preparation of Wire Arrays on Si Substrates by Repeated Chemical Treatment in AgNO3/HF Aqueous Aolution (2016)
  • Author(s): Makoto Nakayama, Takonori Suzuki and Hirokazu Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Structural Characterizations of Si-based Nanostructures by Extraction of Metallic Atoms from CaSi2, SrSi2 and BaSi2 by Inositol Hexakisphosphate (2016)
  • Author(s): Kenta Sasaki, Koki Sano, Xiang Meng, Peiling Yuen, Yuki Kumazama, Hirokazu Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Syntheses of Si-based Nanostructures Using Silicides as Starting Materials in Acid Solutions (2016)
  • Author(s): Yuki Kumazawa, Kenta Sasaki, Xiang Meng, Yuan Peiling and Hirokazu Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Synthesis of Flower-like Si Nanostructures on Si Substrates (2016)
  • Author(s): H. Suzuki, P. Yuan, X. Meng, Y. Saito, K. Sasaki, R. Tamaki, H. Tatsuoka, N. Ahsan and Y. Okada
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Synthesis of Si-based Nanostructures by Extraction of Ba Atoms from BaSi2 in Acid Solutions (2016)
  • Author(s): P. Yuan, S. Ksasaki, Y. Kumazawa, H. Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Synthesis of Crystalline Si-based Nanosheets by Extraction of Ca atoms from CaSi2 in Inositol Hexakisphosphate (IP6) Solution (2016)
  • Author(s): Xiang Meng, Kenta Sasaki, Koki Sano, Peiling Yuan, Hirokazu Tatsuoka
  • Organizer: Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 )
  • Place of Presentation: Nishijin Plaza, Kyushu University, Fukuoka, Fukuoka
  • Year and Date: 2016-07-16 – 2016-07-18
  • Int'l Joint Research
• [Presentation] Synthesis of Si-Based Nanosheets by Extraction of Ca Atoms from CaSi2 by Chelating Agents (2016)
  • Author(s): Yuki Kumazawa, Kenta Sasaki, Peiling Yuan, Xiang Meng, Masaru Shimomura, Hirokazu Tatsuoka
  • Organizer: 7th International Symposium on Control of Semiconductor Interfaces (ISCSI-VII)
  • Place of Presentation: Noyori Conference Hall, Nagoya University, Nagoya, Aichi
  • Year and Date: 2016-06-07 – 2016-06-11
  • Int'l Joint Research
• [Presentation] CaSi2粉末のキレート剤処理によるSi系ナノシートの作製 (2016)
  • Author(s): 立岡 浩一, 佐々木 謙太, 熊澤 佑貴, 孟 祥, 袁 佩玲
  • Organizer: 粉体工学会 2016年度 春期研究発表会
  • Place of Presentation: 京都リサーチパーク，京都市，京都府
  • Year and Date: 2016-05-17 – 2016-05-18
• [Remarks] Hiro - Tatsuoka Lab. Shizuoka University
  • URL: http://www.ipc.shizuoka.ac.jp/~tehtats/TatsuokaLab/