レーザー照射による固液界面でのプラズマ生成機構解明とエネルギー分野での工学的応用

• Project Area: Creation of Science of Plasma Nano-Interface Interactions
• Project/Area Number: 24110703
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: 和田 裕之 東京工業大学, 総合理工学研究科(研究院), 准教授 (00422527)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 液相レーザーアブレーション / 量子ドット増感太陽電池 / レーザープラズマ / ナノ粒子 / 半導体 / 太陽電池

Research Abstract

本研究の目的は、固液界面へのレーザー照射を利用した液相レーザーアブレーションによる形成機構解明、および、生成量子ドットのエネルギー分野での応用である。形成機構解明は平成24年度に一定の成果を得たため、平成25年度は生成量子ドットのエネルギー分野での応用の研究を進めた。
特に注力した内容はシリコン系量子ドット増感太陽電池に関する研究である。電解質としてヨウ素系と多硫化物系のものを用いてデバイスを作製し、太陽電池特性を測定したところ、短絡電流密度、開放電圧共に大きく増加し、可視光領域におけるシリコン量子ドットによる増感効果が確認された。通常のpn接合のシリコン太陽電池は10～20%程度の変換効率であるが、量子ドット増感太陽電池は集光系では60%程度まで高められると期待されており、本研究においても増感効果が確認できたことは重要であると考えられる。ヨウ素系電解質の場合は、開放電圧と曲線因子はほぼ経時的に一定であったが、短絡電流密度が増加したため変換効率も経時的に増加した。デバイスの作製時に、シリコン量子ドットのエタノール溶液を直接酸化チタンペーストに混ぜると太陽電池特性が劣化したが、乾燥したシリコン量子ドットを用いると劣化は生じなかった。また、実際のデバイス化ではある程度の量のシリコンナノ粒子を必要とするため、量子ドット生成量の照射レーザーパワー依存性を調査した。レーザーの照射エネルギー密度を一定にして、照射パワーを増加させることにより生成量が増加することが確認され、生成量増加の指針が示された。
併せて、近赤外領域の太陽光を利用することによって太陽電池の変換効率を向上させることができるとされているアップコンバージョンナノ粒子、および、照明等の省エネルギーを促進させる白色発光ダイオード用のYAG:Ce蛍光体等の検討を進めた。

Current Status of Research Progress

Reason

25年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

25年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] The Effect of Energy Density on Yield of Silicon Nanoparticles Prepared by Pulsed Laser Ablation in Liquid (2014)
  • Author(s): P. Chewchinda, O. Odawara, H. Wada
  • Journal Title: Applied Physics A Volume: February Issue: 1 Pages: 131-135
  • DOI: 10.1007/s00339-014-8293-7
  • NAID: 120006582309
  • Peer Reviewed
• [Journal Article] Preparation of Si Nanoparticles by Laser Ablation in Liquid and Their Application as Photovoltaic Material in Quantum Dot Sensitized Solar Cell (2014)
  • Author(s): Pattarin Chewchinda, Kazuhei Hayashi, Daiki Ichida, Hyunwoong Seo, Giichiro Uchida, Masaharu Shiratani, Osamu Odawara and Hiroyuki Wada
  • Journal Title: Journal of Physics : Conference Series Volume: accepted
  • NAID: 120006582338
  • Peer Reviewed
• [Journal Article] Photovoltaic Properties of Si-Based Quantum-Dot-Sensitized Solar Cells Prepared Using Laser Plasma in Liquid (2014)
  • Author(s): Hiroki Kobayashi, Pattarin Chewchinda, Yasunori Inoue, Hiroshi Funakubo, Michikazu Hara, Masaie Fujino, Osamu Odawara, and Hiroyuki Wada
  • Journal Title: Japanese Journal of Applied Physics Volume: 53 Issue: 1 Pages: 10208-10208
  • DOI: 10.7567/jjap.53.010208
  • NAID: 210000143220
  • Peer Reviewed
• [Journal Article] Photon-Avalanche Effect of Y2O3:Er,Yb Nanoparticles Prepared by Laser Ablation in Liquid (2013)
  • Author(s): Y. Onodera, T. Nunokawa, O. Odawara, H. Wada
  • Journal Title: Trans. Mater. Res. Soc. Jpn Volume: 未定
  • NAID: 130005004239
  • Peer Reviewed
• [Journal Article] Effects of Laser Energy Density on Silicon Nanoparticles Produced Using Laser Ablation in Liquid (2013)
  • Author(s): H. Kobayashi, P. Chewchinda, H. Ohtani, O. Odawara, H. Wada
  • Journal Title: J. Phys Volume: 未定
  • NAID: 120006582266
  • Peer Reviewed
• [Journal Article] Preparation of YAG:Ce Nanoparticles by Laser Ablation in Liquid (2013)
  • Author(s): N. Tsuruoka, T. Katagiri, T. Sasagawa, K. Nakamura, O. Odawara, H. Wada
  • Journal Title: Proc. 30th Symp. Plasma Processing Volume: SPP-30 Pages: 307-307
  • Peer Reviewed
• [Journal Article] Upconversion Properties of Y2O3:Er,Yb Nanoparticles Prepared by Laser Ablation in Water (2013)
  • Author(s): Y. Onodera, T. Nunokawa, O. Odawara, H. Wada
  • Journal Title: J. Lumi. Volume: 137 Pages: 220-220
  • NAID: 120006582232
  • Peer Reviewed
• [Journal Article] Laser Wavelength Effect on Size and Morphology of Silicon Nanoparticles Prepared by Laser Ablation in Liquid (2013)
  • Author(s): P. Chewchinda, T. Tsuge, H. Funakubo, O. Odawara, H. Wada
  • Journal Title: Jpn. J. Appl. Phys. Volume: 52 Pages: 025001-025001
  • NAID: 120006582231
  • Peer Reviewed
• [Journal Article] Afterglow Properties of Silica-Capped Sr2MgSi2O7:Eu,Dy Nanoparticles Prepared by Laser Ablation in Ethanol (2012)
  • Author(s): M. Ishizaki, T. Fuchigami, T. Katagiri, T. Sasagawa, Y. Kitamoto,O. Odawara, H. Wada
  • Journal Title: CheM Volume: 2012 Pages: 47-47
  • NAID: 120006582214
  • Peer Reviewed
• [Journal Article] Preparation of Y2O3:Er,Yb Nanoparticles by Laser Ablation in Liquid (2012)
  • Author(s): T. Nunokawa, Y. Onodera, M. Hara, Y. Kitamoto, O. Odawara, H. Wada
  • Journal Title: Appl. Surf. Sci. Volume: 261 Pages: 118-118
  • Peer Reviewed
• [Journal Article] Preparation of SiO2-capped Sr2MgSi2O7:Eu,Dy Nanoparticles with Laser Ablation in Liquid (2012)
  • Author(s): M. Ishizaki, T. Katagiri, T. Sasagawa, Y. Kitamoto, O. Odawara, H. Wada
  • Journal Title: J. Nanotechnol. Volume: 2012 Pages: 435205-435205
  • Peer Reviewed
• [Presentation] 液中レーザーアブレーションによる無機ナノ粒子生成と光学特性 (2013)
  • Author(s): 和田裕之
  • Organizer: 日本化学会第93春季年会
  • Place of Presentation: 立命館大学(滋賀県)
  • Year and Date: 2013-03-22
  • Invited
• [Presentation] Synthesis of silica-coated upconversion nanoparticles Y2O3:Er,Yb by using polyvinylpyrrolidone (2013)
  • Author(s): Kunio Fujii, Teruaki Fuchigami, Yoshitaka Kitamoto, Masahiko Hara, Osamu Odawara, Hiroyuki Wada
  • Organizer: International Conference on Biomaterials Science
  • Place of Presentation: Tsukuba International Congress Center, Tsukuba, Japan
  • Year and Date: 2013-03-19
• [Presentation] Photodynamic therapy with Y2O3:Er,Yb nanoparticles prepared by laser ablation in liquid (2013)
  • Author(s): Tomohiro Ikehata, Takashi Nunokawa, Masahiko Hara, Osamu Odawara, Hiroyuki Wada
  • Organizer: International Conference on Biomaterials Science
  • Place of Presentation: Tsukuba International Congress Center, Tsukuba, Japan
  • Year and Date: 2013-03-19
• [Presentation] Preparation rate of Y2O3:Er,Yb nanoparticles by laser ablation in liquid (2013)
  • Author(s): Takashi Nunokawa, Yuji Onodera, Anna V. Gubarevich, Osamu Odawara, Hiroyuki Wada
  • Organizer: International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2013-01-30
• [Presentation] Laser Wavelength Effect on Size and Morphology of Silicon Nanoparticles Prepared by Laser Ablation in Liquid (2013)
  • Author(s): Pattarin Chewchinda, Osamu Odawara, Hiroyuki Wada
  • Organizer: International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2013-01-30
• [Presentation] Optical properties of Ce,Tb-doped yttrium silicate nanoparticles prepared by reverse micelle method (2013)
  • Author(s): Takashi Akino, Osamu Odawara, Hiroyuki Wada
  • Organizer: Phosphor Safari
  • Place of Presentation: Hsinchu, Taiwan
  • Year and Date: 2013-01-16
• [Presentation] Upconversion properties of Y2O3:Er,Yb nanoparticles prepared by laser ablation in liquid (2012)
  • Author(s): Hiroyuki Wada, Yuji Onodera, Takashi Nunokawa, Osamu Odawara
  • Organizer: Phosphor Safari
  • Place of Presentation: Hsinchu, Taiwan
  • Year and Date: 2012-11-16
  • Invited
• [Presentation] Morphology of Si nanoparticles prepared by laser ablation in liquid (2012)
  • Author(s): Hiroyuki Wada, Hiroki Kobayashi, Pattarin Chewchinda, Osamu Odawara
  • Organizer: Asia Pacific Conference on Plasma Science and Technology / 25th Symposium on Plasma Science for Materials
  • Place of Presentation: Kyoto University, Kyoto, Japan
  • Year and Date: 2012-10-03
• [Presentation] Influence of Laser Intensity on Optical Properties of Y2O3:Er,Yb Nanoparticles by Laser Ablation in Liquid (2012)
  • Author(s): Y. Onodera, T. Nunokawa, O. Odawara, H. Wada
  • Organizer: IUMRS International Conference on Electronic Materials
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Year and Date: 2012-09-25
• [Presentation] Silicon Nanoparticles Prepared by Pulsed Laser Ablation in Liquid (2012)
  • Author(s): P. Chewchinda, Y. Kitamoto, O. Odawara, H. Wada
  • Organizer: IUMRS International Conference on Electronic Materials
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Year and Date: 2012-09-24
• [Presentation] Effects of Energy Densities on Preparation of Y2O3:Er,Yb Nanoparticles by Laser Ablation in Liquid (2012)
  • Author(s): Takashi Nunokawa, Yuji Onodera, Masahiko Hara, Yoshitaka Kitamoto, Osamu Odawara, Hiroyuki Wada
  • Organizer: International Conference on Science and Technology for Advanced Ceramics
  • Place of Presentation: Mielparque Yokohama, Yokohama, Japan
  • Year and Date: 2012-06-26
• [Presentation] Optical Properties of Y2O3:Er,Yb Nanoparticle Prepared by Laser Ablation in Liquid (2012)
  • Author(s): Y. Onodera, T. Nunokawa, K. Nakamura, Y. Kitamoto, O. Odawara, H. Wada
  • Organizer: Conference on Laser Ablation and Nanoparticle Generation in Liquids
  • Place of Presentation: Taormina, Italy
  • Year and Date: 2012-05-22
• [Presentation] レーザープラズマによる ナノ 粒子生成
  • Author(s): 和田 裕之
  • Organizer: 九州大学プラズマナノ界面工学センター講演会
  • Place of Presentation: 福岡市
  • Invited
• [Presentation] 液中レーザーアブレーションを用いた高結晶性ナノ粒子の作製と応用
  • Author(s): 和田 裕之
  • Organizer: 第79回レーザ加工学会講演会
  • Place of Presentation: 吹田市
  • Invited
• [Presentation] Y2O3:Er,Yb Nano-String Prepared by Laser Ablation in Liquid
  • Author(s): Takashi Nunokawa, Osamu Odawara, and Hiroyuki Wada
  • Organizer: 31th Symposium on Plasma Processing
  • Place of Presentation: Fukuoka
• [Presentation] The Effect of Liquid Volume on the Preparation of Silicon Nanoparticles Using Nanosecond Pulsed Laser Ablation in Liquid
  • Author(s): Chewchinda Pattarin, Odawara Osamu, Wada Hiroyuki
  • Organizer: 31th Symposium on Plasma Processing
  • Place of Presentation: Fukuoka
• [Presentation] Characterization of APTES-coated Y2O3:Er,Yb Nanoparticles Prepared by Laser Plasma in Liquid
  • Author(s): Hikaru Kobayashi, Kunio Fujii, Takashi Nunokawa, Osamu Odawara, Hiroyuki Wada
  • Organizer: 31th Symposium on Plasma Processing
  • Place of Presentation: Fukuoka
• [Presentation] Preparation of Si Nanoparticles by Laser Plasma and Photovoltaic Properties of the QuantumDot Sensitized Solar Cell
  • Author(s): Pattarin Chewchinda, Kazuhei Hayashi, Daiki Ichida, Hyunwoong Seo, Giichiro Uchida, Masaharu Shiratani, Osamu Odawara, Hiroyuki Wada
  • Organizer: The 26th Symposium on Plasma Science for Materials
  • Place of Presentation: Fukuoka
• [Presentation] Luminescence Properties of Y3Al5O12:Ce3+ Nanoparticles Prepared by Laser Plasma
  • Author(s): H. Wada, N. Tsuruoka, O. Odawara
  • Organizer: The 12th Asia Pacific Physics Conference
  • Place of Presentation: Chiba
• [Presentation] 液中レーザー溶融法による窒化チタン真球粒子の作製
  • Author(s): 川添晃佑, 石川善恵, 越崎直人, 小田原修, 和田裕之
  • Organizer: 第61回応用物理学会春季学術講演会
  • Place of Presentation: 相模原市
• [Presentation] Influence of Energy Density on Silicon Nanoparticles Prepared by Laser Ablation in Ethanol
  • Author(s): Pattarin Chewchinda, 小田原 修, 和田 裕之
  • Organizer: シンポジウム「液相高密度エネルギーナノ反応場」(第5回日本化学会新領域研究グループ「液相高密度エネルギーナノ反応場」研究会)
  • Place of Presentation: 江東区
• [Presentation] 液中レーザーアブレーションにより得られたシリコンナノ粒子の太陽電池への応用
  • Author(s): 林 和平, Chewchinda Pattarin, 原 亨和, 小田原 修, 和田 裕之
  • Organizer: シンポジウム「液相高密度エネルギーナノ反応場」(第5回日本化学会新領域研究グループ「液相高密度エネルギーナノ反応場」研究会)
  • Place of Presentation: 江東区
• [Remarks] 東京工業大学和田研究室
  • URL: http://www.wada.iem.titech.ac.jp/
• [Remarks] 東京工業大学/総合理工学研究科/物質科学創造専攻/和田研究室
  • URL: http://www.wada.iem.titech.ac.jp/