Control of fractal dimension of Si nanocryatal assembly and its effect on the optical properties

• Project/Area Number: 19510112
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanostructural science
• Research Institution: Konan University
• Principal Investigator: UMEZU Ikurou Konan University, 理工学部, 教授 (30203582)
• Co-Investigator(Kenkyū-buntansha): 杉村 陽 甲南大学, 理工学部, 教授 (30278791) ; 稲田 貢 関西大学, 工学部, 講師 (00330407)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: レーザーアブレーション / ナノ結晶 / シリコン / 凝集構造 / フラクタル / 自己組織化 / コアシェル / 光吸収 / コアシェル構造

Research Abstract

バックグラウンドガス中でパルスレーザをターゲットに照射するとナノ結晶が生成する。本研究ではバックグラウンドガスにヘリウムと水素の混合ガスを用いナノ結晶を作成することによって、水素による表面水素化とナノ結晶の衝突位置が空間上と基板上で生成したナノ結晶集合体の構造を制御することに成功した。ナノ結晶の集合構造はナノ結晶間の相互作用によってナノ結晶集合体の光学的および電気伝導特性に影響を与えることを明らかにした。

Research Products

• [Journal Article] Collective Transport in Silicon Nanocrystal Assembly Prepared by Laser Ablation Method (2009)
  • Author(s): A. Sugimura, M. Gibo, M. Inada, T. Saitoh, I. Umezu
  • Journal Title: Mater. Res. Soc. Symp. Proc. 1145
  • Peer Reviewed
• [Journal Article] InTaO4-based nanostructures synthesized by reactive pulsed laser ablation (2008)
  • Author(s): T. Yoshida, H. Toyoyama, I. Umezu and A. Sugimura
  • Journal Title: Applied Physics A 93 Pages: 961-966
• [Journal Article] Evolution of Energy Transfer Process between Quantum Dots of Two Different Sizes during the Evaporation of Solvent (2008)
  • Author(s): L. Wei, I. Umezu and A. Sugimura
  • Journal Title: Jpn. J. Appl. Phys., Part 1 47 Pages: 6592-6595
  • NAID: 40016211060
• [Journal Article] Surface hydrogenation of silicon nanocrystallites during pulsed laser ablation of silicon target in hydrogen background gas (2008)
  • Author(s): I. Umezu, M. Takata and A. Sugimura
  • Journal Title: J. Appl. Phys 103
• [Journal Article] Oxidation processes of surface hydrogenated silicon nanocrystallites prepared by pulsed laser ablation and their effects on the photoluminescence wavelength (2008)
  • Author(s): I. Umezu, T. Makino, M. Inada, K. Matsumoto and A. Sugimura
  • Journal Title: J. Appl. Phys. 103
• [Journal Article] Formation of surface stabilized Si nanocrystal by pulsed laser ablation in hydrogen gasv (2008)
  • Author(s): I. Umezu, I. Kondo and A. Sugimura
  • Journal Title: Applied Physics A 93 Pages: 717-720
• [Journal Article] Collective transport in silicon nanocrystal assembly (2008)
  • Author(s): M. Gibo, M. Inada, T. Saitoh, I. Umezu and A. Sugimura
  • Journal Title: Proceedings of The International Meeting for Future of Electron Devices Pages: 115-116
• [Journal Article] Collective Transport in Silicon Nanocrystal Assembly Prepared by Laser Ablation Method (2008)
  • Author(s): A. Sugimura, M. Gibo, M. Inada, T. Saitoh and I. Umezu
  • Journal Title: Mater. Res. Soc. Symp. Proc. Vol.1145
• [Journal Article] Surface hydrogenation of silicon nanocrystallites during pulsed laser ablation of silicon target in hydrogen background gas (2008)
  • Author(s): I. Umezu, M. Takata, A. Sugimura
  • Journal Title: J. Appl. Phys 103 Pages: 14309-14309
  • Peer Reviewed
• [Journal Article] InTaO4-based nanostructures synthesized by reactive pulsed laser ablation (2008)
  • Author(s): T. Yoshida, H. Toyoyama, I. U mezu, A. Sugimura
  • Journal Title: Applied Physics A 93 Pages: 961-966
  • Peer Reviewed
• [Journal Article] Collective transport in silicon nanocrystal assembly (2008)
  • Author(s): Manabu Gibo, Mitsuru Inada, Tadashi Saitoh, Ikurou Umezu, Akira Sugimura
  • Journal Title: Proceedings of The International Meeting for Future of Electron Devices 2008 Pages: 115-116
• [Journal Article] Oxidation processes of surface hydrogenated silicon nanocrystallites preparedby pulsed laser ablation and their effects on the photoluminescence wavelength (2008)
  • Author(s): I. Umezu, A. Sugimura, T. Makino, M. hlada, K. Matsumoto
  • Journal Title: J.Appl.Phys 103
  • Peer Reviewed
• [Journal Article] Formation of nanoscale fine-structured silicon by pulsed laser ablation in hydrogen background gas (2007)
  • Author(s): I. Umezu, A. Sugimura, M. Inada, T. Makino, K. Matsumoto and M. Takata
  • Journal Title: Phys. Rev. B 76 Pages: 45321-145310
• [Journal Article] Synthesis of photoluminescenct colloidal silicon nanoparticles by pulsed laser ablation in liquids (2007)
  • Author(s): I. Umezu, H. Minami, H. Senoo and A. Sugimura
  • Journal Title: J. Phys. : Conf. Ser. 59 Pages: 392-395
• [Journal Article] Effects of surface oxidation on optical absorption of sillicon nanocrystallites (2007)
  • Author(s): I. Umezu, M. Koyama, T. Yoshida and A. SugimuraI. Umezu, M. Koyama, T. Yoshida and A. Sugimura
  • Journal Title: Proceedings of 28th international conference on the physics of semiconductors 893 Pages: 1433-1433
• [Journal Article] Fractal growth of silicon nanocrystallites during pulsed laser ablation (2007)
  • Author(s): I. Umezu, M. Inada, T. Makino and A. Sugimura
  • Journal Title: Proceedings of 28th international conference on the physics of semiconductors 893 Pages: 43-43
• [Journal Article] Nanoparticle formation in the expansion process of a laser ablated plume (2007)
  • Author(s): M. Takiya, I. Umezu, M. Yaga and M. Han
  • Journal Title: J. Phys.: Conf. Ser 59 Pages: 445-448
• [Journal Article] Plume analysis during pulsed laser ablation of silicon in hydrogen gas (2007)
  • Author(s): M. Takata, I. Umezu and A. Sugimura
  • Journal Title: J. Phys.: Conf. Ser. 59 Pages: 575-578
• [Journal Article] Mechanism of Electron-Hole Pair Generation and Light Emission for Electro-Luminescence Devices with Silicon Nano-Crystals Prepared by Laser Ablation Method (2007)
  • Author(s): A. Sugimura, M. Koyama, M. Inada, T. Yoshida and I. Umezu
  • Journal Title: Proceedings of 28th international conference on the physics of semiconductors 893 Pages: 1433-1433
• [Journal Article] Formation of nanoscale fine-structured silicon by pulsed laser ablation in hydrogen background gas (2007)
  • Author(s): I. Umezu, A. Sugimura, M. Inada, T. Makino, K. Matsumoto, M. Takata
  • Journal Title: Phys.Rev.B 76
  • Peer Reviewed
• [Journal Article] Plume analysis during pulsed laser ablation of silicon in hydrogen gas (2007)
  • Author(s): M Takata, I Umezu, A Sugimura
  • Journal Title: J.Phys.:Conf.Ser.59(2007) 59 Pages: 575-578
  • Peer Reviewed
• [Journal Article] Nanoparticle formation in the expallsioll process of a laser ablated plume (2007)
  • Author(s): T Takiya, I Umezu, M Yaga, M Han
  • Journal Title: J.Phys.:Conf.Ser 59 Pages: 445-448
  • Peer Reviewed
• [Journal Article] Synthesis of photoluminescent colloidal silicon nanoparticles b ulsed laser ablation in liquids (2007)
  • Author(s): I Umezu, H Minami, H Senoo, A Suimura
  • Journal Title: J.Phys.:Conf.Ser 59 Pages: 392-395
  • Peer Reviewed
• [Presentation] レーザーアブレーション法での二つのブルーム間の相互作用 (2009)
  • Author(s): 山本成輝, 梅津郁朗, 杉村陽
  • Organizer: レーザー学会
  • Place of Presentation: 徳島大学
  • Year and Date: 2009-01-12
• [Presentation] 水素ガス中でのパルスレーザーアブレーション過程でのシリコンナノ構造体の形成 (2009)
  • Author(s): 梅津郁朗, 杉村陽
  • Organizer: レーザー学会
  • Place of Presentation: 徳島大学
• [Presentation] パルスレーザーアブレーション法によって作製されたSiナノ結晶集合体における電子輸送特性 (2009)
  • Author(s): 宜保学, 稲田貢, 梅津郁朗, 齊藤正, 杉村陽
  • Organizer: レーザー学会
  • Place of Presentation: 徳島大学
• [Presentation] 反応性パルスレーザーアブレーション法によるNiドープInTaO_4ナノ結晶の作製と可視光応答性 (2009)
  • Author(s): 豊山博一, 吉田岳人, 梅津郁朗, 杉村陽
  • Organizer: レーザー学会
  • Place of Presentation: 徳島大学
• [Presentation] 水素ガス中でのパルスレーザーアプレーション過程でのシリコンナノ構造体の形成 (2009)
  • Author(s): 梅津郁朗, 杉村陽
  • Organizer: レーザー学会
  • Place of Presentation: 徳島大学
• [Presentation] Collective transport in silicon nanocrystal assembly prepared by laserablation method (2008)
  • Author(s): A. Sugimura, M. Gibo, M. Inada, T. Saitoh, I. Umezu
  • Organizer: Mat. Res. Soc. Symposium
  • Place of Presentation: Boston, USA
  • Year and Date: 2008-12-01
• [Presentation] レーザーアブレーション法におけるSiナノ結晶の集合体構造の形成に対する表面水素化の効果 (2008)
  • Author(s): 大久保旬人, 梅津郁朗, 杉村陽
  • Organizer: 応用物理学会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] Siナノ結晶集合体における電子輸送特性 (2008)
  • Author(s): 宜保学, 稲田貢, 梅津郁朗, 齋藤正, 杉村陽
  • Organizer: 応用物理学会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] Siナノ結晶集合体へのPイオンドープ (2008)
  • Author(s): 平田圭, 宜保学, 吉田謙一, 稲田貢, 梅津郁朗, 長町信治, 齊藤正, 杉村 陽
  • Organizer: 応用物理学会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] CdSeナノ粒子における発光寿命の濃度依存特性 (2008)
  • Author(s): 田井浩平, Wei Lu, 梅津郁朗, 杉村陽
  • Organizer: 応用物理学会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] レーザーアブレーション法におけるSiナノ結晶の集合体構造の形成に対する表面水素化の効果 (2008)
  • Author(s): 大久保旬人, 梅津郁朗, 杉村陽
  • Organizer: 応用物理学会学術講演会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] Siナノ結晶集合体における電子輸送特性 (2008)
  • Author(s): 宜保学, 稲田貢, 梅津郁朗, 齋藤正, 杉村陽
  • Organizer: 応用物理学会学術講演会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] Siナノ結晶集合体へのPイオンドープ (2008)
  • Author(s): 平田圭, 宜保学, 吉田謙一, 稲田貢, 梅津郁朗, 長町信治, 齊藤正, 杉村陽
  • Organizer: 応用物理学会学術講演会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] CdSeナノ粒子における発光寿命の濃度依存特性 (2008)
  • Author(s): 田井浩平, Wei Lu, 梅津郁朗, 杉村陽
  • Organizer: 応用物理学会学術講演会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] Collective transport in silicon nanocrystal assembly (2008)
  • Author(s): M. Gibo, M. Inada, T. Saitoh, I. Umezu, A. Sugimura
  • Organizer: International meeting for future of electron devices, Kansai
  • Place of Presentation: Osaka, Japan
  • Year and Date: 2008-05-23
• [Presentation] 反応性パルスレーザーアブレーション法によるInTaO4系ナノ構造体の作製II-Niドーピングの効果- (2008)
  • Author(s): 豊山博一, 吉田岳人, 梅津郁朗, 杉村陽
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 応用物理学会日本大学理工学部船橋キャンパス
  • Year and Date: 2008-03-30
• [Presentation] Variable range hopping conduction in chain-like silicon nanowires (2008)
  • Author(s): M. Inada, M. Gibo, H. Yamamo to, I. Umezu, T. Saitoh, A. Sugimura.
  • Organizer: Mat. Res. Soc. Symposium
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2008-03-25
• [Presentation] Variable range hopping conduction in chain-like silicon nanowires (2008)
  • Author(s): M. Inada, M. Gibo, H. Yamamoto, I.Umezu, T. Saitoh and A. Sugimura
  • Organizer: Mat. Res. Soc. Symposium (2008 MRS spring meeting)
  • Place of Presentation: San Francisco, USA
• [Presentation] Collective transport in silicon nanocrystal assembly (2008)
  • Author(s): M. Gibo, M. Inada, T. Saitoh, I. Umezu and A. Sugimura
  • Organizer: International meeting for future of electron devices, Kansai (2008 IMFEDK)
  • Place of Presentation: Osaka, Japan
• [Presentation] Synthesis of Ni-doped InTaO4 nanocrystallites by reactive pulsed laser ablation for application to visible-light-operating photocatalysts (2008)
  • Author(s): T. Yoshida, H. Toyoyama, I. Umezu and A. Sugimura
  • Organizer: 6th International Conference on Photo-Excited Processes and Applications
  • Place of Presentation: Sapporo, Japan
• [Presentation] Collective transport in silicon nanocrystal assembly prepared by laser ablation method (2008)
  • Author(s): A. Sugimura, M. Gibo, M. Inada, T. Saitoh, I. Umezu
  • Organizer: Mat. Res. Soc. Symposium (2008 MRS fall meeting)
  • Place of Presentation: Boston, USA MM04-02
• [Presentation] Synthesis of Ni-doped InTa0_4 nanocrystalites by reactive pulsed laser ablation for application to visible-light-operating photocatalysts (2008)
  • Author(s): T. Yoshlda, H. Toyoyama, I. Umezu, A. Sugimura
  • Organizer: 6th International Conference on Photo-Excited Processes and Applications
  • Place of Presentation: Sapporo, Japan
• [Presentation] パルスレーザーアブレーション法で作製したSiナノ結晶集合体の電子伝導機構 (2007)
  • Author(s): 宜保学, 稲田 貢, 梅津郁朗, 齋藤 正, 杉村陽
  • Organizer: 応用物理学会
  • Place of Presentation: 北海道工業大学
  • Year and Date: 2007-09-08
• [Presentation] 反応性パルスレーザーアブレーション法によるInTaO4系ナノ構造体の作製II・Niドーピングの効果 (2007)
  • Author(s): 豊山 博一, 吉田 岳人, 梅津 郁朗, 杉村 陽
  • Organizer: 応用物理学会
  • Place of Presentation: 日本大学船橋校舎
  • Year and Date: 2007-03-30
• [Presentation] CdSeナノ結晶によって増感されたTiO2太陽電池に対するナノ結晶のシェルの効果 (2007)
  • Author(s): 呂 威, 梅津 郁朗, 杉村 陽
  • Organizer: 応用物理学会
  • Place of Presentation: 日本大学船橋校舎
  • Year and Date: 2007-03-30
• [Presentation] InTaO_4-based nano-structures synthesized by reactive pulsed laser ablation (2007)
  • Author(s): T. Yoshida, H. Toyoyama, I. Umezu, and A. Sugimura
  • Organizer: 9th International Conference on Laser Ablation
  • Place of Presentation: Tenerife, Spain
• [Presentation] REACTION BETWEEN AMBIENT AND EJECTED TARGET MATERIAL DURING PULSED LASER ABLATION IN WATER (2007)
  • Author(s): I. Umezu, H. Senoo and A. Sugimura
  • Organizer: 9th International Conference on Laser Ablation
  • Place of Presentation: Tenerife, Spain
• [Presentation] FORMATION OF SURFACE STABILIZED Si NANOCRYSTALLITES BY PULSED LASER ABLATION IN HYDROGEN BACKGROUND GAS (2007)
  • Author(s): I. Umezu, I. Kondo and A. Sugimura
  • Organizer: 9th International Conference on Laser Ablation
  • Place of Presentation: Tenerife, Spain
• [Presentation] DECREASE IN THE BONDING TEMPERATURE OF METAL BY USING NANOPARTICLES PREPARED BY PULSED LASER ABLATION (2007)
  • Author(s): T. Takiya, I. Umezu, A. Sugimura, H. Kaita, T. Tonoura, H. Yoshida and S. Ueguri
  • Organizer: 9th International Conference on Laser Ablation
  • Place of Presentation: Tenerife, Spain
• [Presentation] Excitation energy transfer based on trap states of CdS quantum dots (2007)
  • Author(s): W. Lu, Y. Tokuhiro, I. Umezu, A. Sugimura and Y. Nagasaki
  • Organizer: Nanoinsight 2007 international conference
  • Place of Presentation: Luxor, Egypt
• [Presentation] アルキル基表面修飾Siナノ粒子の表面化学状態と光物性 (2007)
  • Author(s): 高嶋直也, 田中章順, 保田英洋, 梅津郁朗
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
• [Presentation] ブチル基表面修飾Si ナノ粒子の表面化学状態と光物性 (2007)
  • Author(s): 高嶋直也, 田中章順, 保田英洋, 梅津郁朗
  • Organizer: ナノ学会
  • Place of Presentation: つくば市
• [Remarks]
  • URL: http://um.phys.konan-u.ac.ip/euhome.html