2010 Fiscal Year Final Research Report
Electron field emission in air from 5H-BN micro-cone films prepared by plasma-assisted laser CVD
| Project/Area Number |
19360022
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
KOMATSU Shojiro National Institute for Materials Science, 半導体材料センター, グループリーダー (60183810)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 電子放出 / レーザ / プラズマ / BN / 薄膜 |
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| Research Abstract |
The characteristics of electron field emission in sp^<3->bonded 5H-BN films prepared by laser-assisted plasma CVD wer studied. Their merits originated from mainly three factors. The first is the surface effect due to the electric dipole moment formed by the chemisorbed hydrogena and nitrogen atoms, which favors the electron field emission. The second is the effective work function inherent in the new crystal structure of the sp^<3->bonded BN polytypic forms. The third is the surface morphology made of micro-cones that favored the emission due to the geometrical enhancement of the local electric field. The combinatorial effect of these factors enabled the electron field emission evem in the air. The new structures of sp^<3->bonded BN were successfully prepared by this method and the new analytic method using a diagram for understanding the strcutural stability of polytypes was established and utilized for the fabrication of these BN films.
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Research Products
(35 results)
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[Journal Article] Photoinduced Phase Transformations in Boron Nitride : New Polytypic Forms of sp3-Bonded (6H- and 30H-) BN2010
Author(s)
Shojiro Komatsu, Kazuaki Kobayashi, Yuhei Sato, Daisuke Hirano, Takuya Nakamura, Takahiro Nagata, Toyohiro Chikyo, Takayuki Watanabe, Takeo Takizawa, Katsumitsu Nakamura, Takuya Hashimoto
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Journal Title
J.Phys.Chem.C 114
Pages: 13176,13186
Peer Reviewed
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