Field Emission from Bamboo-Like Multiwalled Carbon Nanotube Arrays Enhanced by Mild Oxidation
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概要
- 論文の詳細を見る
Multiwalled carbon nanotube (MWNT) arrays prepared by pyrolysis of Ni-phthalocyanine are heated at mild temperatures (100–300°C) in air. The arrays oxidized at 150°C exhibit the most excellent field emission characteristics, such as a turn-on voltage of 180 V and a current density of 10 mA$\cdot$cm-2 at 300 V. It is clarified by high-resolution electron microscopy of the MWNT that the MWNT tip is sharpened by selective oxidation at 150°C without affecting the graphytic cell structure. The lowest turn-on voltage is still higher than the voltage evaluated in a single metallic emitter with an identical radius. The reason for this discrepancy is discussed.
- Japan Society of Applied Physicsの論文
- 2003-08-15
著者
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Araki Hisashi
Department Of Electronic Engineering Faculty Of Engineering Osaka University
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Yoshino Katsumi
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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Sakata Takao
Research Center For Ultra-high Voltage Electron Microscopy Osaka University
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Kamide Koichi
Department Of Electronic Engineering Graduate School Of Engineering Osaka University
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Mori Hirotaroh
Research Center For Ultra-high Voltage Electron Microscopy Osaka University
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Matsushima Masaki
Department Of Earth And Planetary Science Tokyo Institute Of Technology
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Matsushima Masaki
Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, Japan
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Kamide Koichi
Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, Japan
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Mori Hirotaroh
Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 2-1 Yamada-oka, Suita, Osaka, Japan
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Yoshino Katsumi
Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, Japan
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