Diamond coated Si and Mo field emitters: diamond thickness effect
Diamond coated Si and Mo field emitters: diamond thickness effect
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DOI：
10.1016/0169-4332(95)00520-x
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发表时间：
1996-03
影响因子：
6.7
通讯作者：
V. Zhirnov;W. Choi;J. Cuomo;J. Hren
中科院分区：
文献类型：
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作者：
V. Zhirnov;W. Choi;J. Cuomo;J. Hren
采用电介质电泳法对单个硅和钼场致发射体涂覆人工合成高压金刚石颗粒。对涂层前后的场发射特性进行了比较，结果表明涂层厚度的不同会导致I-V曲线的显著变化。提出了一个通过金刚石层发射的模型，该模型主要依赖于穿过肖特基势垒进入金刚石，同时假设从金刚石表面发射到真空的势垒可以忽略不计。该模型得出的“有效”功函数值与实验测量值一致。
Individual silicon and molybdenum field emitters were coated with synthetic high-pressure diamond particles by dielectrophoresis. A comparison of the field emission characteristics before and after coating showed significant shifts of the I-V curves depending on the thickness of the coatings. A model of emission through the diamond layer is proposed that depends primarily upon tunneling through the Schottky barrier into diamond, while assuming a negligible barrier to emission from the diamond surface into vacuum. This model yields a value of the “effective” work function in agreement with experimental measurements.