Patent ID: 9721766
Date: 2017-08-01
CPC Classifications: H01J,H01L

Claim:
1. A method for processing a target object, comprising: a formation step of forming a silicon oxide film in a processing chamber of a plasma processing apparatus by repeatedly executing a sequence including a first step of supplying a first gas containing aminosilane-based gas into the processing chamber, a second step of purging a space in the processing chamber after the execution of the first step, a third step of generating a plasma of a second gas containing oxygen gas in the processing chamber after the execution of the second step, and a fourth step of purging the space in the processing chamber after the execution of the third step; a preparation step which is executed before the target object is accommodated in the processing chamber; and a processing step of performing an etching process on the target object accommodated in the processing chamber, wherein the preparation step is performed before the processing step, the formation step is performed in the preparation step and the processing step, and in the first step, a plasma of the first gas is not generated.