Electron Emission Characteristics of Wet Spun Carbon Nanotube Fibers (Postprint)
Abstract
Wet spun carbon nanotube fibers were characterized using both field emission and electron energy distribution measurements. Fowler-Nordheim analysis of the field emission results showed that the carbon fibers demonstrated a large effective emission area, 2 x 10(exp -12) m2, which resulted in a reduced brightness of 1.84 x 10(exp 10) A/m2/sr/V. By considering the emission and number of carbon nanotube emitters it can be shown that the brightness is consistent with previous reports for single nanotube emitters. Additionally, using the effective emission area determined from the Fowler-Nordheim analysis an emittance value around 0.70 m was found. These characteristics are useful metrics in determining the applicability of using wet spun carbon nanotube fibers for field emission devices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 27, 2019
- Accession Number
- AD1113708
Entities
People
- G. Gruen
- Jaeheung Park
- Jonathan Ludwick
- M. Cahay
- P. T. Murray
- Steven B. Fairchild
- T. C. Back
Organizations
- Air Force Research Laboratory