Development of cathodoluminescence nanospectroscopy for the insulating nanostructures

• Project/Area Number: 23760022
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Applied materials science/Crystal engineering
• Research Institution: University of Tsukuba (2012); National Institute for Materials Science (2011)
• Principal Investigator: WATANABE Kentaro 筑波大学, 数理物質系, 研究員 (40582078)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 結晶評価 / ワイドギャップ半導体 / 低速電子線 / 走査電子顕微鏡 / カソードルミネッセンス

Research Abstract

Use of low energy electron beam (~1 keV) in analytical electron microscopy significantly reduces the surface charge-up of semi-insulating wide bandgap materials and realizes high spatial resolution. We developed SEM-cathodoluminescence (CL) system for 1keV observation and realized CL nanospectroscopy of semi-insulating materials without metal-coating. We also visualized growth direction domains within ZnO nanorod single crystal and observed strain-induced bandgap shrinkage of ZnO.

Research Products

• [Journal Article] Conductive optical-fibre STM probe for local excitation and collection of cathodoluminescence at semiconductor surfaces
  • Author(s): Kentaro Watanabe, Yoshiaki Nakamura,and Masakazu Ichikawa
  • Peer Reviewed
• [Presentation] CL法によるZnOナノワイヤの成長機構の評価 (2013)
  • Author(s): 渡辺 健太郎,フォルク ヤノシュ,呉 承俊,長田 貴弘,若山 裕,関口 隆史
  • Organizer: 日本顕微鏡学会 第69回学術講演会
  • Place of Presentation: ホテル阪急エキスポパーク
  • Year and Date: 2013-05-21
• [Presentation] 極低温ナノプローブCL法によるZnOナノワイヤの光学・電気特性評価 (2013)
  • Author(s): 渡辺 健太郎,フォルク ヤノシュ,呉 承俊,長田 貴弘,若山 裕,関口 隆史
  • Organizer: 2013 年春季<第60回>応用物理学会
  • Place of Presentation: 神奈川工科大学
  • Year and Date: 2013-03-27
• [Presentation] 極低温ナノプローブCL法によるZnOナノワイヤの光学・電気特性評価 (2013)
  • Author(s): 渡辺 健太郎
  • Organizer: 2013年春季<第60回>応用物理学会
  • Place of Presentation: 神奈川工科大学
• [Presentation] ナノプローブ・カソードルミネッセンス装置の開発と圧電性ナノ材料の応力印加その場評価への応用 (2012)
  • Author(s): 渡辺 健太郎,フォルク ヤノシュ,呉 承俊,長田 貴弘,若山 裕,関口 隆史
  • Organizer: 2012 年秋季<第73回>応用物理学会
  • Place of Presentation: 愛媛大学・松山大学
  • Year and Date: 2012-09-12
• [Presentation] Development of nano-probelow-temperature cathodoluminescence system and its application to strained piezoelectric nano-rods (2012)
  • Author(s): Kentaro Watanabe, Janos Volk, Robert Erderyi, and Takashi Sekiguchi
  • Organizer: Poster 11, '7thInternational Workshop on Nano-Scale Spectroscopy & Nanotechnology'
  • Place of Presentation: Zurich, Switzerland
  • Year and Date: 2012-07-03
• [Presentation] Development of nano-probe low-temperature cathodoluminescence system and its application to strained piezoelectric nano-rods (2012)
  • Author(s): 渡辺 健太郎
  • Organizer: 7th International Workshop on Nano-Scale Spectroscopy & Nanotechnology
  • Place of Presentation: ETH Zurich, Switzerland
• [Presentation] ナノプローブ・カソードルミネッセンス装置の開発と圧電性ナノ材料の応力印加その場評価への応用 (2012)
  • Author(s): 渡辺 健太郎
  • Organizer: 2012年秋季<第73回>応用物理学会
  • Place of Presentation: 愛媛大学・松山大学
• [Presentation] Local luminescence properties oftrigonally arrayed ZnO nanorods grown on ZnO substrates (2011)
  • Author(s): Kentaro Watanabe, Janos Volk, and Takashi Sekiguchi
  • Organizer: International NIMS-MFA-LIOS joint workshop on Metal Oxide / Polymer Nanocomposites and Applications
  • Place of Presentation: Budapest, Hungary
  • Year and Date: 2011-09-21
• [Presentation] ErドープしたSi過剰SiO2膜のカソードルミネッセンス評価 (2011)
  • Author(s): 渡辺健太郎,Sebastien Cueff, Benjamin Dierre, Christophe Labbe, Filippo Fabbri, Xavier Portier, Richard Rizk, 関口隆史
  • Organizer: 2011 年秋季<第72回>応用物理学会
  • Place of Presentation: 山形大学小石川キャンパス
  • Year and Date: 2011-08-31
• [Presentation] ErドープしたSi過剰SiO2膜のカソードルミネッセンス評価 (2011)
  • Author(s): 渡辺健太郎，Sébastien Cueff, Benjamin Dierre, Christophe Labbé, Filippo Fabbri, Xavier Portier, Richard Rizk, 関口隆史
  • Organizer: 201１年秋季<第72回>応用物理学会
  • Place of Presentation: 山形大学小石川キャンパス
• [Presentation] Local luminescence properties of trigonally arrayed ZnO nanorods grown on ZnO substrates (2011)
  • Author(s): Kentaro Watanabe, János Volk, and Takashi Sekiguchi
  • Organizer: International NIMS-MFA-LIOS joint workshop on Metal Oxide / Polymer Nanocomposites and Applications
  • Place of Presentation: ハンガリー科学アカデミー本部ビル
• [Remarks] 受賞[1] Kentaro Watanabe, Janos Volk, Robert Erderyi, and Takashi Sekiguchi,"Development of nano-probelow-temperature cathodoluminescence system and its application to strained piezoelectric nano-rods"Best Poster AwardPoster 11, '7thInternational Workshop