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首页> 外文期刊>Journal of Materials Science. Materials in Electronics >Carbon based electronic materials: applications in electron field emission
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Carbon based electronic materials: applications in electron field emission

机译：碳基电子材料：在电子场发射中的应用

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摘要

The influence of the different types of bonding present in a range of carbon based materials is discussed as a precursor to describing the field emission characteristics of carbon cold cathode materials. Some of the controlling factors which govern electron emission from carbon based cathodes are discussed. It is shown that from disordered carbon films the interplay between the clustered sp(2) phase and the insulating sp(3) matrix is important. The transition from a 'back contact' to 'front surface' controlled emission mechanism is described in terms of the sp(2) content and field penetration. A possible reason for high field enhancement factors found in disordered films also is provided. It is further shown that changes to the sp(2) phase by current stressing can improve the field emission characteristics. Emission from carbon nanotubes is also discussed and the prospects for new types of nanotube - polymer composite based cathodes are also considered.
机译：讨论了一系列碳基材料中存在的不同类型键合的影响，以此作为描述碳冷阴极材料场发射特性的先驱。讨论了控制从碳基阴极发射电子的一些控制因素。结果表明，从无序的碳膜中，成簇的sp（2）相和绝缘的sp（3）基质之间的相互作用很重要。从sp（2）含量和场穿透方面描述了从“背面接触”到“正面”受控发射机制的过渡。还提供了在无序薄膜中发现高场增强因子的可能原因。进一步表明，通过电流应力改变sp（2）相可以改善场发射特性。还讨论了碳纳米管的排放，并考虑了新型纳米管-基于聚合物复合材料的阴极的前景。

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