Patent ID: 7651729

Claim:
A method of fabricating a metal silicate layer on a substrate using an atomic layer deposition technique, said method comprising the sequential steps of: (a) loading a substrate into a reactor; (b) supplying a metal source gas containing a desired metal into the reactor having the substrate under reaction conditions to form a first chemical adsorption layer including the desired metal on the substrate; (c) after completion of step (b), supplying a first oxide gas into the reactor under reaction conditions to react with the first chemical adsorption layer including the desired metal to form a metal oxide layer including the desired metal on the substrate; (d) repeatedly performing steps (b) and (c) sequentially K times; (e) after completion of steps (b), (c) and (d), supplying a silicon source gas into the reactor under reaction conditions to form a second chemical adsorption layer including silicon on the metal oxide layer on the substrate; (f) after completion of step (e), supplying a second oxide gas into the reactor under reaction conditions to react with the metal oxide layer and the second chemical adsorption layer including the silicon to form a metal silicate layer; (g) repeatedly performing steps (e) and (f) sequentially Q times; and (h) performing the operations of steps (b), (c), (d), (e), (f) and (g) sequentially at least one time, thereby forming a metal silicate layer with a desired thickness, wherein the value of K or of Q ranges from 1 to 10, and also wherein one of the values K and Q is at least 2.