T. Ajioka et al., A METHOD OF ELIMINATING B-MODE DIELECTRIC-BREAKDOWN FAILURE IN GATE OXIDES UTILIZING A CHARGING PHENOMENON, I.E.E.E. transactions on electron devices, 40(12), 1993, pp. 2282-2286
The dielectric breakdown characteristics of charged samples were inves
tigated. B-mode dielectric breakdown failure was eliminated by scrubbi
ng gate oxide films using a brush. Various scrubbing experiments revea
led that this occurred due to charging to a voltage close to the intri
nsic breakdown voltage of the gate oxide film. Other characteristics s
uch as C-V curves and time dependent dielectric breakdown characterist
ics were not degraded by the charging. The method can be of value in t
he manufacture of reliable oxide films in ULSI