Patent ID: 7396719

Claim:
A method of forming an HfON film using atomic layer deposition, the method comprising performing a plurality of cycles one after another, each cycle comprising, in order: (a) supplying an Hf precursor selected from the group consisting of Hf[N(CH 3 ) 2 ] and Hf[N(C 2 H 5 )CH 3 ] 4 to a semiconductor substrate disposed in a reactor, and then purging the reactor; (b) subsequent to step (a), supplying an oxidizer to the semiconductor substrate, and then purging the reactor; and (c) subsequent to step (b), supplying a reaction source selected from the group consisting of NH 3 gas, N 2 O gas, NO gas, and NH 3 plasma to the semiconductor substrate, and then purging the reactor; and (d) subsequent to step (c), supplying an oxidizer and purging the reactor.