Carbon film for field emission devices

Details Carbon film for field emission devices Carbon film for field emission devices

1997-08-13

1999-02-09

Patel, Vip

Electric lamp and discharge devices

Discharge devices having a thermionic or emissive cathode

H01J 105

Patent

active

058699228

ABSTRACT:
A carbon film used for a field emission cathode comprises a layer of thin carbon film on a substrate. With 244 nm and 2-7 mW excitation, and within the wave number from 1100 to 1850 cm.sup.-1, the carbon film has a distinct UV Raman band in the range from 1578 cm.sup.-1 to 1620 cm.sup.-1 with a full width at half maximum from 25 to 165 cm.sup.-1. The carbon film can be deposited by chemical vapor deposition, physical vapor deposition, electrolysis, printing or painting, and can be continuous or noncontinuous.

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