Exciton effects for high purity nanostructured hexagonal boron nitride

2011 Fiscal Year Final Research Report

• Project/Area Number: 22651056
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Microdevices/Nanodevices
• Research Institution: National Institute for Materials Science
• Principal Investigator: WATANABE Kenji 独立行政法人物質・材料研究機構, 光・電子材料ユニット, 主幹研究員 (20343840)
• Co-Investigator(Renkei-kenkyūsha): TANIGUCHI Takashi 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, グループリーダー (80354413)
• Project Period (FY): 2010 – 2011
• Keywords: 六方晶窒化ホウ素 / グラフェン / hBNナノシート / 構造評価 / ラマン散乱分光法 / エキシトン発光

Research Abstract

Excitonic luminescence of hexagonal boron nitride(hBN) single-crystal was studied, and found that the origin of the 220 nm band is different from that of the 215 nm self-trapped and the 227 nm bound exciton luminous bands BN mono-and bilayers can be prepared and identified on top of an oxidized Si wafer using a mechanical exfoliation technique and the use of thinner SiO_2 and/or narrow optical filters makes it possible to see even BN monolayers.
By using hBN for the substrate of graphene, the electrical conduction properties of the graphene improved significantly, and its mobility reached almost one-order higher than that of the conventional SiO_2 substrate device.

Research Products

• [Journal Article] Hexagonal Boron Nitride as a New Ultraviolet Luminescent Material and Its Application (2011)
  • Author(s): Kenji Watanabe, and Takashi Taniguchi
  • Journal Title: International Journal of Applied Ceramic Technology Volume: 8 Pages: 977-989
  • Peer Reviewed
• [Journal Article] Hexagonal boron nitride as a new ultraviolet luminescent material and its application-Fluorescence properties of hBN single-crystal powder (2011)
  • Author(s): K. Watanabe, T. Taniguchi, K. Miya, Y. Sato, K. Nakamura, T. Niiyama, and M. Taniguchi
  • Journal Title: Diamond and Related Materials Volume: 20 Pages: 849-852
  • Peer Reviewed
• [Journal Article] 機械的はく離法で作成した六方晶系窒化ホウ素(hBN)薄膜の評価 (2011)
  • Author(s): 日浦英文,谷口尚,渡邊賢司,塚越一仁
  • Journal Title: New DIAMOND Volume: 27 Pages: 42-45
  • Peer Reviewed
• [Journal Article] Exciton optical transitions in a hexagonal boron nitride single crystal, physica status solidi(RRL) (2011)
  • Author(s): L. Museur, G. Brasse, A. Pierret, S. Maine, B. Attal-Tretout, F. Ducastelle, A. Loiseau, J. Barjon, K. Watanabe, T. Taniguchi, and A. Kanaev
  • Journal Title: Rapid Research Letters Volume: 5 Pages: 214-216
  • Peer Reviewed
• [Journal Article] Luminescence Characteristics and Annealing Effect of Tb-Doped AlBNO Films for Inorganic Electroluminescence Devices (2011)
  • Author(s): K. Masumoto, A. Semba, C. Kimura, T. Taniguchi, K. Watanabe, T. Sakata, and H. Aoki
  • Journal Title: Japanese Journal of Applied Physics Volume: 50 Pages: 1-4
  • Peer Reviewed
• [Journal Article] Anisotropic excitonic effects in the energy loss function of hexagonal boron nitride (2011)
  • Author(s): S. Galambosi, L. Wirtz, J. A. Soininen, J. Serrano, A. Marini, K. Watanabe, T. Taniguchi, S. Huotari, A. Rubio, and K. Hamalainen
  • Journal Title: Physical Review B Volume: 83
  • Peer Reviewed
• [Journal Article] Scanning tunnelling microscopy and spectroscopy of ultra-flat graphene on hexagonal boron nitride (2011)
  • Author(s): J. Xue, J. Sanchez-Yamagishi, D. Bulmash, P. Jacquod, A. Deshpande, K. Watanabe, T. Taniguchi, P. Jarillo-Herrero, and B. J. Leroy
  • Journal Title: Nature Materials Volume: 10 Pages: 282-285
  • Peer Reviewed
• [Journal Article] Hunting for Monolayer Boron Nitride : Optical and Raman Signatures (2011)
  • Author(s): R. V. Gorbachev, I. Riaz, R. R. Nair, R. Jalil, L. Britnell, B. D. Belle, E. W. Hill, K. S. Novoselov, K. Watanabe, T. Taniguchi, A. K. Geim, and P. Blake
  • Journal Title: SMALL Volume: 7 Pages: 465-468
  • Peer Reviewed
• [Journal Article] Giant Nonlocality Near the Dirac Point in Graphene (2011)
  • Author(s): D. A. Abanin, S. V. Morozov, L. A. Ponomarenko, R. V. Gorbachev, A. S. Mayorov, M. I. Katsnelson, K. Watanabe, T. Taniguchi, K. S. Novoselov, L. S. Levitov, and A. K. Geim
  • Journal Title: Science Volume: 332 Pages: 328-330
  • Peer Reviewed
• [Journal Article] Multicomponent fractional quantum Hall effect in graphene (2011)
  • Author(s): C. R. Dean, A. F. Young, P. Cadden-Zimansky, L. Wang, H. Ren, K. Watanabe, T. Taniguchi, P. Kim, J. Hone, and K. L. Shepard
  • Journal Title: Nature Physics Volume: 7 Pages: 693-696
  • Peer Reviewed
• [Presentation] Fluorescence properties of hexagonal boron nitride single-crystal powder (2011)
  • Author(s): 渡邊賢司
  • Organizer: 第31回電子材料シンポジウム
  • Place of Presentation: ラフォーレ琵琶湖(守山市)
  • Year and Date: 2011-07-01
• [Presentation] 六方晶窒化ホウ素単結晶の光学特性とその応用 (2011)
  • Author(s): 渡邊賢司
  • Organizer: 日本学術振興会ワイドギャップ半導体光・電子デバイス第162委員会
  • Place of Presentation: キャンパスイノベーションセンター(東京都)
  • Year and Date: 2011-04-22
• [Presentation] Hexagonal boron nitride as a new ultraviolet luminescent material and its application (2010)
  • Author(s): K. Watanabe
  • Organizer: 2010 MRS Fall Meeting
  • Place of Presentation: Hynes Convention Center Boston,(米国)
  • Year and Date: 2010-11-30
• [Presentation] Hexagonal boron nitride as a new ultraviolet luminescent material and its application (2010)
  • Author(s): K. Watanabe
  • Organizer: Diamond 2010
  • Place of Presentation: Budapest,(ハンガリー)
  • Year and Date: 2010-09-08
• [Presentation] 六方晶窒化ホウ素のバンド端光学特性 (2010)
  • Author(s): 渡邊賢司
  • Organizer: 第29回電子材料シンポジウム
  • Place of Presentation: ラフォーレ修善寺(伊豆市)
  • Year and Date: 2010-07-15
• [Presentation] Far UV emitter based on hexagonal boron nitride (2010)
  • Author(s): K. Watanabe
  • Organizer: The international Conference on Nanophotonics 2010
  • Place of Presentation: エポカルつくば(つくば市)
  • Year and Date: 2010-05-31
• [Presentation] 新遠紫外発光材料六方晶窒化ホウ素のデバイス応用 (2010)
  • Author(s): 渡邊賢司
  • Organizer: 日本学術振興会真空ナノエレクトロニクス第158委員会第82研究会
  • Place of Presentation: 筑波大学東京キャンパス(東京都)
  • Year and Date: 2010-04-19
• [Remarks]
  • URL: http://www.nims.go.jp/personal/BN_research/