Coating of Wide-Band-Gap Material on Whisker-Type Cold Emitter
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概要
- 論文の詳細を見る
To enhance field emission properties, magnesium oxide (MgO) thin films were coated on the top of aluminum-doped zinc oxide (ZnO:Al) whiskers. The crystalline form of MgO was used as a representative material showing a high secondary-electron-emission An electron emission experiment was performed for 1000 h using an emitter consisting of the aggregated MgO/ZnO:Al whiskers. Scanning electron microscopy was conducted to compare the emission site images obtained before and after 1000 h operation. Furthermore, in this paper, Fowler–Nordheim plots are presented to explain the changing phenomenon of the field enhancement factor and the effective work function of the emission site before and after operation. Finally, a model of the electron emission of a MgO/ZnO:Al whisker-type field emitter is proposed.
- 2008-06-25
著者
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西野 純一
Nagaoka University Of Technology
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西野 純一
長岡技科大
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Saitoh Hidetoshi
Department Of Bioresource Science Obihiro University Of Agriculture And Veterinary Medicine
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Ito Haruhiko
Department Of Chemistry Faculty Of Science The University Of Tokyo
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NISHINO Junichi
Department of Chemistry, Nagaoka University of Technology
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Ohshio Shigeo
Department Of Chemistry Nagaoka University Of Technology
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Nishino J
Department Of Chemistry Nagaoka University Of Technology
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Ohkawara Yoshiaki
Department Of Chemistry Nagaoka University Of Technology
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Ito Haruhiko
Department of Materials Science, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Ooki Satoshi
Department of Materials Science, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Nishino Junichi
Fukui National College of Technology, Geshi, Sabae, Fukui 916-8507, Japan
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Saitoh Hidetoshi
Department of Materials Science, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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