Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1420020 | Carbon | 2006 | 6 Pages |
Abstract
A novel synthesis of carbon nanotubes for field-emitter arrays with a uniform field emission current is reported. Microwave plasma chemical vapor deposition and a unique structure of a sandwich catalyst stack are used to grow vertically aligned carbon nanotubes with a high density, uniform length and diameter. After being etched in a H2/N2-microwave plasma, the overall field emission current density from the prepared emitter arrays is 1.2 A/cm2 at an electric field of 6.5 V/μm with stable and uniform emission characteristics. The threshold field is 3.2 V/cm, defined at an emission current density of 10−6 A/cm2.
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Physical Sciences and Engineering
Energy
Energy (General)
Authors
Zexiang Chen, Peter K. Bachmann, Daniel den Engelsen, Irmgard Koehler, Detlef U. Wiechert,