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首页> 外文期刊>Physica, B. Condensed Matter >Field emission from awl-shaped diamond-like carbon by using filtered cathodic arc plasma technique on anodic aluminum oxide template
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Field emission from awl-shaped diamond-like carbon by using filtered cathodic arc plasma technique on anodic aluminum oxide template

机译：在阳极氧化铝模板上采用滤波阴极电弧等离子体技术从锥状类金刚石碳中发射场

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摘要

Awl-shaped diamond-like carbon (DLC) was directly grown on anodic aluminum oxide (AAO) template by using filtered cathodic arc plasma (FCAP) technique at room temperature. The awls of DLC were about 250 nm in the height and the diameters of the awls were similar to 100 nm at the top. The awl density was estimated to be similar to 10(8)cm(-2). A broad asymmetric band ranging from I 100 to 1800 cm(-1) was detected by Raman spectrum. This asymmetric band was characteristic band of DLC. The sp(3)/(sp(3) + sp(2)) ratio of C-C bond of the awl-shaped DLC was measured by X-ray photoelectron spectrum, and it was about 68.3%. Field-emission properties of the awl-shaped DLC were investigated. A low turn-on field of 2.6V/mu m at 10 mu A/cm(2) with an emission area of 3.14 mm(2) was achieved, and the emission current stability was very good. The results indicated that the electrons were emitted under both the effect of enhanced field because of the geometry and the work function of the DLC sample. Based on Fowler-Nordheim plot, the values of work function for the awl-shaped DLC were estimated in ranges of 0.23-1.08 from a linearity plot. (C) 2007 Elsevier B.V. All rights reserved.
机译：通过在室温下使用过滤阴极电弧等离子体（FCAP）技术，将锥状类金刚石碳（DLC）直接生长在阳极氧化铝（AAO）模板上。 DLC的锥子的高度约为250 nm，锥子的直径与顶部的直径近似为100 nm。估计锥子密度类似于10（8）cm（-2）。拉曼光谱检测到范围从100到1800 cm（-1）的宽不对称带。该不对称带是DLC的特征带。通过X射线光电子能谱测量锥状DLC的C-C键的sp（3）/（sp（3）+ sp（2））比，约为68.3％。研究了锥状DLC的场发射特性。在10μA/ cm（2）时具有2.6V /μm的低导通场，发射面积为3.14 mm（2），并且发射电流稳定性非常好。结果表明，由于DLC样品的几何形状和功函，电子在增强场的作用下均被发射。根据Fowler-Nordheim图，锥度DLC的功函数值从线性图估计在0.23-1.08的范围内。 （C）2007 Elsevier B.V.保留所有权利。

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