Patent ID: 9691618
Date: 2017-06-27
CPC Classifications: H01J,H01L

Claim:
1. A method of fabricating a semiconductor device, comprising: loading a wafer onto an electrostatic chuck in a chamber; performing a first periodical process in which a first gas is supplied to an inside of the chamber, a first portion of the first gas is adsorbed onto the wafer, a second portion of the first gas is exhausted to an outside of the chamber while the first gas is being supplied, and a third portion of the first gas is not adsorbed onto the wafer and remains in the chamber; performing a second periodical process in which a second gas is supplied to the inside of the chamber and the third portion of the first gas not adsorbed onto the wafer and remaining in the chamber is exhausted to an outside of the chamber; performing a third periodical process in which a third gas is supplied to the inside of the chamber, plasma including the third gas is generated, and a sputtering process is carried out in the third periodical process to collide the plasma with the wafer and to remove the first gas adsorbed onto the wafer; and unloading the wafer to the outside of the chamber, wherein the third periodical process further includes: