Carbon nanotubes with nitrogen content
US6664728B2 · kind B2 · utility
7Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Oct 14, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/939
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Field emission characteristics of carbon films are improved by changing the conditions of the growth of the films, by adding nitrogen, or substitutes to the nitrogen for hydrogen, in the carbon film growth process. Resulting field emission cathodes exhibit better field emission characteristics because of the increased concentration of nitrogen within the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.