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Combined Field and Thermionic Emission Process in ZnO Nanostructure Cold Emission Cathode

机译:ZnO纳米结构冷发射阴极中的场与热电子结合过程

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With recent research, the author intends to outline the framework of the field emission of ZnO nanostructures. However, many groups' reports ignored the thermionic emission process in the low electric field. A recently published field emission cathode parameter extraction method [X. He et al., J. Appl. Phys. 102, 056107(2007)] provided unambiguous and reliable cathode. The method utilized Richardson-Laue-Dushman law in low electric field and Fowler-Norheim equation in high electric field to solve a one-dimensional model including both thermionic and field emission. The model gave a much better agreement with the experimental data of ZnO cathode under the applied field and acquired a revised surface field enhancement factors and work function of ZnO cathode in the electron emission process.
机译:通过最近的研究,作者打算概述ZnO纳米结构的场发射框架。但是,许多小组的报告都忽略了低电场下的热电子发射过程。最近发表的场发射阴极参数提取方法[X. He等人,J.Appl.Chem。物理102,056107(2007)]提供了明确和可靠的阴极。该方法利用低电场下的Richardson-Laue-Dushman定律和高电场下的Fowler-Norheim方程来求解一维模型,该模型包括热电子发射和场发射。该模型与ZnO阴极在外加电场下的实验数据吻合得更好,并获得了修正的表面场增强因子和电子发射过程中ZnO阴极的功函数。

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