Stability of Field Emitter Arrays to Oxygen Exposures

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.

Grantor dc:publisher

University of North Texas

Year dc:date

2002

Author dc:creator

• Godbole, Soumitra Kumar

Contributors dc:contributor

• Gnade, Bruce
• Wallace, Robert M.
• Bouanani, Mohamed El
• Fanelli, Michael

• Field emission.
• Oxygen.
• Field emitter arrays
• oxygen degradation
• gold coated
• life estimation
• emission current recovery
• stability

Statement dc:rights

• Public
• Copyright
• Godbole, Soumitra Kumar
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 52110410
https://digital.library.unt.edu/ark:/67531/metadc3346/
ark: ark:/67531/metadc3346

OAI identifier oai:identifier

info:ark/67531/metadc3346