淡江大學機構典藏:Item 987654321/100152
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    题名: Enhancement of the Stability of Electron Field Emission Behavior and the Related Microplasma Devices of Carbon Nanotubes by Coating Diamond Films
    作者: Chang, Ting-Hsun;Srinivasu Kunuku;Hong, Ying-Jhan;Leou, Keh-Chyang;Yew, Tri-Rung;Tai, Nyan-Hwa;Lin, I-Nan
    贡献者: 淡江大學物理學系
    关键词: carbon nanotubes;electron field emission properties;hybrid structured diamond films;plasma illumination behavior
    日期: 2014-07-01
    上传时间: 2015-02-03 16:32:45 (UTC+8)
    出版者: Washington, DC: American Chemical Society
    摘要: The enhanced lifetime stability for the carbon nanotubes (CNTs) by coating hybrid granular structured diamond (HiD) films on Au-decorated CNTs/Si using a two-step microwave plasma enhanced chemical vapor deposition process was reported. Electron field emission (EFE) properties of HiD/Au/CNTs emitters show a low turn-on field (E0) of 3.50 V/μm and a high emission current density (Je) of 0.64 mA/cm2 at an applied field of 5.0 V/μm. There is no notable current degradation or fluctuation over a period of τHiD/Au/CNTs = 360 min for HiD/CNTs EFE emitters tested under a constant current of 4.5 μA. The robustness of the HiD/CNTs EFE emitter is overwhelmingly superior to that of bare CNTs EFE emitters (τCNTs = 30 min), even though the HiD/Au/CNTs do not show the same good EFE properties as CNTs, which are E0 = 0.73 V/μm and Je = 1.10 mA/cm2 at 1.05 V/μm. Furthermore, the plasma illumination (PI) property of a parallel-plate microplasma device fabricated using the HiD/Au/CNTs as a cathode shows a high Ar plasma current density of 1.76 mA/cm2 at an applied field of 5600 V/cm with a lifetime of plasma stability of about 209 min, which is markedly better than the devices utilizing bare CNTs as a cathode. The CNT emitters coated with diamond films possessing marvelous EFE and PI properties with improved lifetime stability have great potential for the applications as cathodes in flat-panel displays and microplasma display devices.
    關聯: ACS Applied Materials & Interfaces 6(14), pp.11589−11597
    DOI: 10.1021/am502330v
    显示于类别:[物理學系暨研究所] 期刊論文

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