Patent ID: 8389408

Claim:
A method of forming a semiconductor device comprising: providing a first precursor and a substitute gas into a reaction chamber having a substrate therein, the first precursor having first substituents; and providing a second precursor into the reaction chamber, wherein either of the first precursor or the second precursor comprises a metal element and the other includes a silicon element, at least one of the first substituents of the first precursor are substituted with the substitute gas at a region spaced apart from the substrate, the first precursor substituted with the substitute gas is adsorbed onto the substrate, and the second precursor is reacted with the adsorbed first precursor, wherein the first substituent is NRR', wherein each of R and R′ is one selected from the group consisting of C n H 2n+1 , wherein n is an integral number in the range from 0 to 10, C n H 2n−1 , wherein n is an integral number in the range from 1 to 12, and —CH═C═CH 2 .