EP 1228521 A1 20020807 - METHOD FOR PRODUCING AN EMITTING CATHODE USING SOL-GEL TECHNIQUE AND RESULTING CATHODE
Title (en)
METHOD FOR PRODUCING AN EMITTING CATHODE USING SOL-GEL TECHNIQUE AND RESULTING CATHODE
Title (de)
SOL-GEL-VERFAHREN ZUR HERSTELLUNG EINER EMISSIONSKATHODE UND GEMÄSS DEM VERFAHREN HERGESTELLTE KATHODE
Title (fr)
PROCEDE DE REALISATION D'UNE CATHODE D'EMISSION A L'AIDE DE LA TECHNIQUE SOL-GEL ET CATHODE OBTENUE PAR UN TEL PROCEDE
Publication
Application
Priority
- FR 0003138 W 20001110
- FR 9914474 A 19991112
Abstract (en)
[origin: WO0135434A1] The invention concerns a cathode emitting electrons comprising a substrate (1) produced in the form of a metal filament having a diameter ranging between 50 and 400 mu m and, preferably, of the order of 100 mu m, or a planar metal chip whereof the emitting surface ranges between 0.01 mm<2> and 100 mm<2>, the metal substrate (1) being coated with a metal oxide layer (4) obtained from a sol containing a metal alkoxide (M - (OR)n wherein M represents a metal and R an alkyl group), the metal oxide layer (4) defining with the metal substrate (1), an electronic junction having a potential barrier height of a few tenths of electrons volts and having a thickness ranging between 1 and 10 nm and, preferably, of the order of 5 nm.
IPC 1-7
IPC 8 full level
H01J 1/144 (2006.01); H01J 1/30 (2006.01); H01J 1/304 (2006.01); H01J 9/02 (2006.01); H01J 9/04 (2006.01); H01J 19/24 (2006.01)
CPC (source: EP)
H01J 1/144 (2013.01); H01J 1/30 (2013.01); H01J 9/022 (2013.01); H01J 9/04 (2013.01)
Citation (search report)
See references of WO 0135434A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL
DOCDB simple family (publication)
WO 0135434 A1 20010517; AU 1710501 A 20010606; EP 1228521 A1 20020807; FR 2801135 A1 20010518; FR 2801135 B1 20020208; JP 2003514346 A 20030415
DOCDB simple family (application)
FR 0003138 W 20001110; AU 1710501 A 20001110; EP 00979705 A 20001110; FR 9914474 A 19991112; JP 2001537082 A 20001110