Patent ID: 9556516
Date: 2017-01-31
CPC Classifications: C23C

Claim:
1. A method for forming a TiN film on a substrate by plasma-enhanced atomic layer deposition (PEALD) using tetrakis(dimethylamino)titanium (TDMAT) or tetrakis(diethylamino)titanium (TDEAT), said PEALD comprising multiple deposition cycles, each deposition cycle comprising: (i) introducing TDMAT and/or TDEAT in a pulse to a reaction space where a substrate is placed; (ii) continuously introducing a NH (iii) applying RF power in a pulse to the reaction space wherein the pulse of TDMAT and/or TDEAT and the pulse of RF power do not overlap; and wherein (iv) steps (i) to (iii) are repeated to deposit a TiN film on the substrate, and said method further comprising: setting a target film stress for the TiN film, which is greater than a film stress of a reference TiN crystalline film being deposited by steps (i) to (iv) under deposition conditions including a reference flow rate of H setting a flow rate of H