We reported the field emission behavior of pure carbon films deposited by low-energy electron irradiation in electron cyclotron resonance plasma. First, the field emission behaviors of amorphous, graphene sheets embedded and graphite-like structures were investigated, and the graphene sheets embedded carbon film exhibited an enhanced performance. Then by controlling the electron irradiation energies and densities, the effects of the graphene sheets on the field emission properties were examined. The best electron emission property (turn-on field of 8.4 V/mu m and maximum current density of 2.10 mA/cm(2) at electric field of 16 V/mu m) was obtained with the carbon film under the electron irradiation energy of 50 eV and density of 65 mA/cm(2). The mechanism of enhanced field emission was attributed to the nanosized graphene sheets which acted as electron emitters and transport channels. The method of controlling nanosized graphene sheets is important for developing the nanostructured carbon coatings in field emission applications.
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机译:我们报告了低能电子辐照在电子回旋共振等离子体中沉积的纯碳膜的场发射行为。首先,研究了非晶态,石墨烯片嵌入和石墨状结构的场发射行为,并且石墨烯片嵌入碳膜表现出增强的性能。然后,通过控制电子辐照能量和密度,研究了石墨烯片对场发射性能的影响。碳膜在电子辐照能为0的条件下获得了最佳的电子发射性能(在8.4 V /μm的电场下的开启场和在16 V /μm的电场下的最大电流密度为2.10 mA / cm(2))。 50 eV和65 mA / cm(2)的密度。增强场发射的机理归因于充当电子发射体和传输通道的纳米级石墨烯片。控制纳米尺寸石墨烯片的方法对于开发场发射应用中的纳米结构碳涂层很重要。
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