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US 6,388,366 B1Granted
Carbon nitride cold cathode
AssigneeWayne State University
InventorRoger W. Pryor
Life of this patent
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Abstract
A cold cathode is formed of carbon nitride. The cathode may include layers of boron nitride and diamond underlying the carbon nitride. The cathodes are made by reactive laser ablation or by sputtering. Electronic devices utilizing the carbon nitride cathodes are also described.
Claims17
An electronic device, comprising:
- a body defining a vacuum space;
- a cathode formed of carbon nitride, said carbon nitride being doped n-type and
- an electrode associated with said carbon nitride cathode;
- wherein a surface of said carbon nitride cathode contacts said vacuum such that electrons are emitted from said cathode into said vacuum space.
1 more element
An electronic device, comprising:
- a body defining a vacuum space;
- a cathode;
- an anode;
- an electrode associated with said cathode;
- wherein said cathode extends into said vacuum space and is formed of n-type carbon nitride.
2 more elements
Dependencies are inferred from the claim text.