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Carbon nanotube (CNT) is a type of ideal cathode materials for field emission (FE) devices. Its outstanding field emission properties can be attributed to high field enhancement on the tip due to its large aspect ratio. Early works reported that the field enhancement of CNTs in an array is strongly suppressed due to the screening effect. Further study confirmed that to avoid the screening effect,...
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...
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