Hybrid composite including carbon nanotube and carbide-derived carbon, electron emitter including the hybrid composite, method of preparing the electron emitter, and electron emission device including the electron emitter
US7871545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2008 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | May 9, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/27
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Hybrid composites including carbon nanotubes and a carbide-derived carbon material, electron emitters including the hybrid composites, methods of preparing the electron emitters, and electron emission devices including the electron emitters are provided. Specifically, a hybrid composite includes at least one carbon nanotube and a carbide-derived carbon material. The carbide-derived carbon material is prepared by thermochemically reacting a carbide compound with a halogen-containing gas to extract substantially all of the elements except for the carbon in the carbide compound. Since the carbon nanotubes and the carbide-derived carbon material are hybridized and composited, a screen effect that may occur when large amounts of carbon nanotubes are used can be prevented, and an electron emitter including the hybrid composite has excellent electron emission capabilities, excellent uniformity, and a long lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.