Stability of Field Emitter Arrays to Oxygen Exposures

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The purpose of these experiments was to determine the degradation mechanisms of molybdenum based field emitter arrays to oxygen exposures and to improve the overall reliability. In addition, we also evaluated the emission current stability of gold-coated field emitter arrays to oxygen exposures. oxygen at 1x10-6 torr was introduced into the chamber through a leak valve for different lengths of time and duty cycles. To ensure identical oxygen exposure and experimental measurement conditions, tips on half the area of the FEA were fully coated with gold and the other half were left uncoated. The emission current from the gold coated ... continued below

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Godbole, Soumitra Kumar December 2002.

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  • Godbole, Soumitra Kumar

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The purpose of these experiments was to determine the degradation mechanisms of molybdenum based field emitter arrays to oxygen exposures and to improve the overall reliability. In addition, we also evaluated the emission current stability of gold-coated field emitter arrays to oxygen exposures. oxygen at 1x10-6 torr was introduced into the chamber through a leak valve for different lengths of time and duty cycles.
To ensure identical oxygen exposure and experimental measurement conditions, tips on half the area of the FEA were fully coated with gold and the other half were left uncoated. The emission current from the gold coated half was found to degrade much less than that from the uncoated half, in the presence of oxygen. Also in the absence of oxygen, the emission current recovery for the gold-coated side was much quicker than that for the uncoated side.

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  • December 2002

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  • Sept. 26, 2007, 2:56 a.m.

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  • Dec. 11, 2008, 5:03 p.m.

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Godbole, Soumitra Kumar. Stability of Field Emitter Arrays to Oxygen Exposures, thesis, December 2002; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc3346/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .