Discharge electrode implemented by a wide bandgap...

Details Discharge electrode implemented by a wide bandgap... Discharge electrode implemented by a wide bandgap...

2008-03-25

2008-03-25

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Discharge devices having a thermionic or emissive cathode

C313S311000, C313S337000, C313S34600R

Reexamination Certificate

active

07348718

ABSTRACT:
A discharge electrode emitting electrons into a discharge gas, encompasses an emitter and current supply terminals configured to supply electric current to the emitter. The emitter embraces a wide bandgap semiconductor having at 300 K a bandgap of 2.2 eV or wider. Acceptor impurity atoms and donor impurity atoms being doped in the wide bandgap semiconductor, the activation energy of the donor impurity atoms being larger than the activation energy of the acceptor impurity atoms.

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patent: 10-069868 (1998-03-01), None
patent: 2000-106130 (2000-04-01), None

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