Patent ID: 10490400

Abstract:
There is provided a technique that includes forming a nitride film on a pattern including a concave portion formed in a surface of a substrate by repeating a cycle. The cycle includes non-simultaneously performing: (a) forming a first layer by supplying a precursor gas to the substrate; (b) forming an NH-terminated second layer by supplying a hydrogen nitride-based gas to the substrate to nitride the first layer; and (c) modifying a part of the NH termination to an N termination, and maintaining another part of the NH termination as it is without modifying the another part to the N termination by plasma-exciting and supplying a nitrogen gas to the substrate, wherein in (c), an N termination ratio in an upper portion of the concave portion of the pattern is made higher than an N termination ratio in a lower portion of the concave portion of the pattern.