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In this paper, we report on the evaluation of the emission uniformity in the emission area of the cathodes by using a Faraday-cup with a probe hole of 20 mum in diameter. In the experiments, the cathodes were operated in pulse mode with the frequency of 100 Hz with pulse width of 250 mus in a vacuum of 10"8 Pa.
Carbon nanotubes (CNTs) have several features such as high aspect ratio, chemical stability, and mechanical strength. Because of these features, CNTs are expected to be a material for emitters of field emission displays (FEDs) or other field emission products. In this study, relationships between the field emission characteristics of printed CNT cathodes and the diameters of CNTs were investigated.
In this paper, in order to improve the emission efficiency and understand the emission mechanism MOS cathodes are fabricated based on nanocrystalline Si (nc-Si) prepared by a pulsed laser ablation (PLA) technique and investigated their emission properties. The cathode is composed of nc-Si covered with a thin oxide film sandwiched between an n-type silicon substrate as an electron source and a thin...
In this study, the relationship between FE characteristics and defects measured by RAMAN scattering in the MWNT cathodes treated by plasma and laser was investigated. The laser power used in RAMAN scattering was about 0.1 mW with a spot area of 8.8 mum2, corresponding to a power density of 1 kW/cm2, which did not induce any damage on the MWNT film. This result indicates that the defects such as dangling...
Carbon nanotube (CNT) cathodes were irradiated by KrF excimer laser. The electron emission properties of the CNT cathode with or without reactive ion etching is examined
In this study, laser irradiation in addition to plasma treatment is introduced for the purpose of increase of field emission (FE) characteristics, emission uniformity and emission site density (ESD) of multi-walled carbon nanotube cathode
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