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Optica Publishing Group
  • Journal of Display Technology
  • Vol. 7,
  • Issue 9,
  • pp. 467-472
  • (2011)

A Field Emission Light Source Using a Reticulated Vitreous Carbon (RVC) Cathode and Cathodoluminescent Phosphors

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Abstract

A field emission light source using cathodoluminescent (CL) phosphors and a reticulated vitreous carbon (RVC) cathode is presented. The flat-format design requires no microfabrication technology and can be easily configured for light emission at different wavelengths, ranging from UV to visible, to infrared. The operation of a visible-spectrum light source was demonstrated by testing both unpackaged devices in a vacuum environment and proof-of-concept packaged lamps. The results exhibited excellent field emission properties with a minimum extraction field of 1.7 V/μm and good uniformity. Luminance characteristics were also excellent, with a white CL phosphor being excited up to approximately 12 000 Cd/m<sup>2</sup>. Lower levels of luminance are applicable to display backlights.

© 2011 IEEE

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