Patent ID: 6797645
Filing Date: 2004-09-28
Classification: H01L

Abstract:
A method of fabricating a gate dielectric for use in a semiconductor device comprising the steps of:(a) forming a metal oxide or a metal silicate on a silicon substrate, (b) after forming said metal oxide or said metal silicate introducing nitrogen in said metal oxide or said metal silicate by ion implantation to form a nitrided metal oxide or metal silicate, and (c) after forming said nitrided metal oxide or metal silicate reoxidizing said nitrided metal oxide or metal silicate to form an amorphous nitrided metal oxide or metal silicate, wherein said reoxidizing step is performed at a temperature ranging from 300Â° C. to 1000Â° C. for a time in the range of from 10 seconds to 1 hr, said amorphous material being resistant to crystallization by subsequent heat-treatment.