Patent ID: 7550090

Claim:
A method of cleaning a process chamber, comprising: providing a process chamber having carbon deposits on inner surfaces of a dielectric dome; introducing a first gas comprising one or more oxidizing gases into the process chamber at a flow rate of between about 0.32 sccm/cm 2 and about 1.9 sccm/cm 2 while maintaining a first pressure in the process chamber of between about 2 mTorr and about 25 mTorr; providing a first RF power at a frequency of between about 5 MHz and about 20 MHz to a substrate support member disposed in the process chamber and providing a second RF power at a frequency of between about 400 KHz and about 10 MHz to inductive coils surrounding the dielectric dome while maintaining a plasma of the first gas to react the one or more oxidizing gases with the carbon deposits to produce volatile compounds comprising carbon; terminating the first RF power, second RF power, and the first gas; introducing a second gas comprising one or more reducing gases to the process chamber at a flow rate of between about 0.16 sccm/cm 2 and about 1.3 sccm/cm 2 , while maintaining a second pressure in the process chamber of between about 5 mTorr and about 60 mTorr; providing the first RF power at a frequency of between about 5 MHz and about 20 MHz to the substrate support member and providing the second RF power at a frequency of between about 400 KHz and about 10 MHz to the inductive coils while maintaining a plasma of the second gas to react the one or more reducing gases with the one or more oxidizing gases not evacuated from the process chamber; evacuating the chamber; and terminating the first RF power, the second RF power, and the second gas.