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首页> 外文期刊>Ultramicroscopy >Achieving uniform field emission from carbon nanotube composite cold cathode with different carbon nanotube contents: Effects of conductance and plasma treatment
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Achieving uniform field emission from carbon nanotube composite cold cathode with different carbon nanotube contents: Effects of conductance and plasma treatment

机译：从碳纳米管含量不同的碳纳米管复合冷阴极获得均匀的场发射：电导和等离子体处理的影响

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摘要

A carbon nanotube (CNT) composite cold cathode was studied for field emission display application. The CNT composite cold cathode was composed of CNTs and silicon dioxide binder. Field emission from CNT composite cold cathode with different CNT contents was studied. It was found that with increase in CNT contents, the threshold field decreased. The conductance of the composite cathode was measured and with increasing CNT content, there was a critical CNT content where the conductance increased several orders of magnitude. Plasma etching using SF_6 as the etchant was adopted to treat the cathode. Improvement in emission uniformity was achieved. It was also found that after post-treatment the threshold field of the cathode decreased. The morphology of the etched cathode was analyzed and the improvement of uniformity and lowering of the threshold field was attributed to the exposure of CNTs after etching.
机译：研究了碳纳米管（CNT）复合冷阴极在场发射显示器中的应用。碳纳米管复合冷阴极由碳纳米管和二氧化硅粘合剂组成。研究了不同CNT含量的CNT复合冷阴极的场发射。发现随着CNT含量的增加，阈值场减小。测量了复合阴极的电导率，并随着CNT含量的增加，出现了临界CNT含量，其中电导率增加了几个数量级。采用以SF_6作为蚀刻剂的等离子体蚀刻来处理阴极。发射均匀性得到改善。还发现，在后处理之后，阴极的阈值场减小。分析了蚀刻的阴极的形态，并且均匀性的提高和阈值场的降低归因于蚀刻后CNT的暴露。

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