Patent ID: 10388512

Abstract:
A method of manufacturing a semiconductor device includes forming a film on a substrate by performing a cycle a predetermined number of times. The cycle includes non-simultaneously performing (a) forming a first layer by supplying a precursor to the substrate from a first nozzle and (b) forming a second layer by supplying a reactant to the substrate from a second nozzle different from the first nozzle to thereby modify the first layer. The act (a) includes sequentially performing (a-1) supplying an inert gas from the second nozzle at a first flow rate smaller than a flow rate of the precursor in a state in which the precursor is supplied from the first nozzle and (a-2) supplying an inert gas from the second nozzle at a second flow rate larger than the flow rate of the precursor in a state in which the precursor is supplied from the first nozzle.