Hafnium carbide films and film-coated field emission cathodes

Mackie, W.A.; Xie, Tianbao; Blackwood, Jeff; Williams, Samuel C.; Davis, P.R.

doi:10.1109/ivmc.1996.601816

Cited by 1 publication

(1 citation statement)

References 4 publications

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“…MacIde et al 6,Schwoebel et al7, and Rkhshandehroo and Pang8 have reported experiments of this kind. In essentially every case, thin overcoatings have resulted in improved performance in situ but exposure to the atmosphere has caused the emitter performance to revert to essentially the original values.…”

Section: Emitter Materialsmentioning

confidence: 92%

Field-emitter array development for field-emission displays

2000

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In this paper we report recent results from an ongoing program designed to develop a fundamental understanding of the effects of materials, vacuum deposition parameters, and post fabrication processing on the performance of field-emitter arrays for displays. Molybdenum and silicon have been the materials of choice for first generation displays, and have produced acceptable results for the first trials. However, investigations of other emitter materials such as diamond-like-carbon (DLC) and zirconium carbide (ZrC) have produced intriguing improvements in emission performance. In addition in situ processes such as coating of molybdenum and silicon emitters with alternate materials and aggressive emitter-surface cleaning processes such as hydrogen-plasma cleaning and emission-stimulated desorption by high-current pulses, have also been shown to be beneficial. It has also been shown that when usingthe Spindt emitter fabrication process the emitter cone can be tailored to a preferred shape by appropriate materials selection and manipulation of the emitter deposition parameters. Finally, it is shown that the details of the emitter tip shape can have an impact on the performance of the emitter due to the dynamics of temperature and field-induced surface diffusion during cathode operation. Emitter tips of the same material, operated in the same environment and at the same emission levels can behave very differently depending on the details of the emitter-tip geometry.

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Section: Emitter Materialsmentioning

confidence: 92%