Abstract

The properties of field electron emitters made of iridium and rhenium, whose surface is coated with carbon by decomposition of benzene molecules on the surface, are studied. The stability of the emission characteristics and the stability of the obtained emitters to the adsorption of residual gas molecules and ion bombardment are shown. The coating is obtained either in the form of a monoatomic graphene film on the flat faces of the emitter, or in the form of graphite growths. The field electron emission is localized on the edges and corners of the faceted graphite outgrowth. After adsorption of alkaline and alkaline earth metals onto the carbon coating, an abnormally large increase in emissions from flat faces and localization of emissions on graphene-coated faces occurs. The emission amplification occurs in the presence of alkali metal atoms, both on the surface and only under the graphene film.

中文翻译：

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碳涂层电子场发射器

摘要

研究了由铱和铼制成的场电子发射器的性能，该发射器表面通过苯分子的分解而被覆碳。显示了发射特性的稳定性以及所获得的发射器对残留气体分子的吸附和离子轰击的稳定性。该涂层要么以发射器平面上的单原子石墨烯薄膜的形式获得，要么以石墨生长的形式获得。场电子发射局限于多面石墨生长物的边缘和角落。碱金属和碱土金属吸附到碳涂层上后，平面的排放量异常大幅增加，并且石墨烯涂层面上的排放量局部化。发射放大发生在碱金属原子存在的情况下，无论是在石墨烯薄膜的表面还是仅在石墨烯薄膜的下方。