Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1975-09-24
1978-01-03
Ozaki, G.
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
148188, 148189, 357 39, H01L 2122
Patent
active
040664848
ABSTRACT:
Disclosed is a thyristor and a method for the manufacture thereof. An auxiliary dopant, such as gold, is diffused into the cathode emitter region and the area immediately therearound. The auxiliary dopant is selected from among those known to stimulate charge carrier recombination. Consequently charge carrier recombination in the vicinity of the cathode emitter is enhanced and rapid turnoff of the device is promoted. Both SCR and triac embodiments are disclosed.
REFERENCES:
patent: 3317359 (1967-05-01), Engbert
patent: 3440113 (1969-04-01), Wolley
patent: 3625781 (1971-12-01), Joshi et al.
patent: 3645808 (1972-02-01), Kamiyama et al.
General Electric Company
Mooney R. J.
Ozaki G.
Salai S. B.
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