spec mat request: SCT Pt in Wbmetal

Mary Tang mtang at stanford.edu
Mon Nov 9 12:43:39 PST 2009

Hi Rostam --

I realized that the wiki did not have the description of Semi-Clean B 
materials and so just posted it:

Sorry about that.   According to this, your process is perfectly 
acceptable, provided your cleans are done in dedicated labware at 
wbgeneral or wbgaas.

What does everyone think about the proposal to clean these at wbmetal?


Rostam Dinyari wrote:
> Hi,
> I wanted to double check if I can do the following process. If some parts of it are not allowed or I can do them with some alteration please let me know.
> - diff clean wafers
> - lithography
> - deposit Ti/Pt in SCT
> - do a clean (ie semi-clean) lift off using clean beakers, etc
> - wbmetal prx127 (If I should, I'll change the chemicals with fresh ones after using it)
> - wbmetal prs1000 (If I should, I'll change the chemicals with fresh ones after using it)
> - deposit 50nm LTO in tylanbpsg
> - etch the oxide in AMTetcher and stop on Pt (If stopping on Pt is not OK, how about if I don't etch all the way to the Pt)
> I know this is a short notice. I'd really appreciate it if you could let me know your decision in ~ 2 days.
> Thanks,
> Rostam

Mary X. Tang, Ph.D.
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
mtang at stanford.edu

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