Patent ID: 7341960

Claim:
A method for making a metal-oxide-semiconductor (MOS) device comprising; forming a titanium dioxide film on a semiconductor substrate; and subjecting the titanium dioxide film to a fluorine-containing ambient, and conducting passivation of grain boundary defects of the titanium dioxide film through reaction of fluorine and titanium dangling bonds in the titanium dioxide film; wherein formation of the titanium dioxide film is conducted through metal organic chemical vapor deposition (MOCVD) techniques using tetraisopropoxytitanium (Ti(i-OC 3 H 7 ) 4 ) and nitrous oxide (N 2 O) as the reactant; and wherein the passivation of the grain boundary defects of the titanium dioxide film is conducted through liquid phase deposition (LPD) techniques that involve formation of a silicon dioxide film on the titanium dioxide film using a mixture of a hydrofluorosilicic acid (H 2 SiF 6 ) solution saturated with silica gel and a boric acid solution.