Post-cleaning chamber seasoning method
View Patent ↗A method for seasoning a process chamber is disclosed. The seasoning method includes providing a seasoning film on the interior surfaces of a process chamber, typically after cleaning of the chamber.
1. A method of seasoning a process chamber having interior surfaces to reduce the formation of silicon residues on said interior surfaces in a subsequent silicon plasma deposition process, comprising the steps of:
cleaning said process chamber according to a cleaning process comprising a chlorine containing etchant to remove silicon residues from said chamber; and
providing a seasoning film comprises silicon carbide on said interior surfaces of said process chamber by introducing precursor gases comprising trimethylsilane and carbon dioxide into said process chamber at a pressure of from about 10 Torr to about 760 Torr.
2. The method of claim 1 , further comprising the step of depositing a silicon layer on a substrate within said chamber according to a plasma deposition process.
3. The method of claim 2 , wherein said silicon comprises amorphous silicon.
4. A method of seasoning a chemical vapor deposition chamber having interior surfaces and a gas distribution plate to reduce the formation of silicon residues on said interior surfaces and said gas distribution plate in a subsequent silicon plasma deposition process, comprising the steps of:
cleaning said chamber according to a cleaning process comprising a chlorine containing etchant gas to remove silicon residues from said chamber; and
providing a seasoning film comprising silicon carbide having a thickness of from about 2 μm to about 10 μm on said interior surfaces and said gas distribution plate of said chamber by introducing precursor gases comprising trimethylsilane and carbon dioxide into said process chamber at a chamber pressure of from about 10 Torr to about 760 Torr at a temperature from about 500 degrees C. to about 700 degrees C.
5. The method of claim 4 , further comprising the step of depositing a silicon layer on a substrate within said chamber according to a plasma deposition process.
6. A method of seasoning a chemical vapor deposition chamber having interior surfaces and a gas distribution plate to reduce the formation of silicon residues on said interior surfaces and said gas distribution plate in a subsequent silicon plasma deposition process, comprising the steps of:
cleaning said chamber according to a cleaning process comprising a chlorine containing etchant gas to remove silicon residues from said chamber; and
providing a seasoning film comprising silicon carbide having a thickness of from about 2 μm to about 10 μm on said interior surfaces and said gas distribution plate of said chamber comprising introducing precursor gases comprising trimethylsilane and carbon dioxide into said process chamber at a chamber pressure of from about 10 Torr to about 760 Torr at a temperature from about 500 degrees C. to about 700 degrees C. and a process time of from about 0.5 minutes to about 10 minutes.
7. The method of claim 6 , further comprising the step of depositing a silicon layer on a substrate within said chamber according to a plasma deposition process.