Hf in P5000 Ch.A

[Jim McVittie]

Hi Eric,

Hf is very similar to Zr. Some years back we did a detailed study of Zr 
etching is the P5000 where we focused on contamiation issues. We found Cl2 
is very effective in removing Zr. I beleve Hf has been etched by several 
students over the year in the P-5000. I can check on this last point when 
I get back.

	Jim  

On Mon, 21 May 2007, Eric Perozziello wrote:

> 
> ERICP
> 
> Hf deposited in SCT or Sematech
> 
> Vendor will either be SNF's SCT or Sematech's CMOS fab.
> (these films were previously introduced by Intel in ~2003).
> 
> Process flow is roughly:
> clean SiO2 or HfSixOy, followed by Hf, followed by Al
> (gate stack used by Sematech, and others)
> litho
> P5000 etch (Ch.A Metal chamber, Cl2/BCl3 chemistry)
> strip
> 
> (All materials will be in the form of thin film
> on Si wafer only. )
> 
> It would be best for us to know if we can put Hf
> in the P5000 ChA in a one week timeframe if possible.
> 
> Thanks,
> -Eric
> 
> 
> 

-- 
--------------------------------------------------------------
Jim McVittie, Ph.D.    			Senior Research Scientist 
Allen Center for Integrated Systems     Electrical Engineering
Stanford University             	jmcvittie at stanford.edu
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Stanford, CA 94305-4075			Tel: (650) 725-3640