Patent ID: 9536734
Date: 2017-01-03
CPC Classifications: C23C,H01L

Claim:
1. A method of manufacturing a semiconductor device, comprising: forming a film on a substrate by performing a cycle a plurality of times, the cycle including non-simultaneously performing: (a) supplying a precursor gas containing a first element to the substrate in a process chamber to form a first layer containing the first element; (b) exhausting the precursor gas in the process chamber through an exhaust system; (c) confining a reaction gas containing a second element in the process chamber by supplying the reaction gas to the substrate in the process chamber while the exhaust system is closed to form a second layer containing the first element and the second element by modifying the first, layer; and (d) exhausting the reaction gas in the process chamber through the exhaust system while the exhaust system is opened, wherein the act of (a) includes setting an internal pressure of the process chamber at the end of the act of (a) to a first pressure, and the act of (c) includes setting the internal pressure of the process chamber at the end of the act of (c) to a second pressure higher than the first pressure, wherein the reaction gas does not comprise silicon, and an opening degree of an exhaust flow path of the exhaust system in the act of (c) is set to be smaller than an opening degree of the exhaust flow path in the act of (a).