Field Emission Properties of Single-Walled Carbon Nanotubes with a Variety of Emitter Morphologies

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概要

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• Field emission properties of single-walled carbon nanotubes (SWCNTs), which were prepared through alcohol catalytic chemical vapor deposition for 10–60 s, were characterized in a diode configuration. Protrusive bundles at the top surface of samples act selectively as emission sites. The number of emission sites was controlled by emitter morphologies combined with texturing of Si substrates. SWCNTs grown on a textured Si substrate exhibited a turn-on field as low as 2.4 V/μm at a field emission current density of 1 μA/cm2. Uniform spatial luminescence (0.5 cm2) from the rear surface of the anode was revealed for SWCNTs prepared on the textured Si substrate. Deterioration of field emission properties through repetitive measurements was reduced for the textured samples in comparison with vertically aligned SWCNTs and a random network of SWCNTs prepared on flat Si substrates. Emitter morphology resulting in improved field emission properties is a crucial factor for the fabrication of SWCNT-electron sources. Morphologically controlled SWCNTs with promising emitter performance are expected to be practical electron sources.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-06-25

著者

• Noda Suguru

  Department Of Chemical System Engineering School Of Engineering The University Of Tokyo

• Maruyama Shigeo

  Department Of Internal Medicine Gotsu General Hospital

• Shiratori Yosuke

  Department Of Chemistry Faculty Of Science And Engineering Ritsumeikan University

• Sugime Hisashi

  Department Of Chemical System Engineering School Of Engineering The University Of Tokyo

• Yamaguchi Yukio

  Department Of Chemical System Engineering Graduate School Of Engineering The University Of Tokyo

• Tsuji Yoshiko

  Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Zhang Zhengyi

  Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Maruyama Shigeo

  Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Furuichi Koji

  Dainippon Screen MFG Co., Ltd., 1-1 Tenjinkita, Teranouchi-agaru 4, Horikawa-dori, Kamigyo-ku, Kyoto 602-8585, Japan

• Yamaguchi Yukio

  Department of Chemical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Shiratori Yosuke

  Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

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