Followup to ZnSe request

Alissa M. Fitzgerald amf at
Tue Oct 24 17:53:53 PDT 2006

Hi SpecMat,

Please let us know how soon you might have an answer for us on this inquiry.
I don't mean to be a pest, as I know you don't meet every week, but it would
be very helpful to know how soon we might have a verdict, or if you are
going to need further input from us to reach a verdict.  

We're doing a significant amount of planning for this project and some
critical decisions are hinging on your final verdict.

Please let us know if you have any questions.

Best regards,

650 592 6100

> -----Original Message-----
> From: Ben Chui [mailto:bwchui at] 
> Sent: Tuesday, October 17, 2006 10:41 AM
> To: specmat at
> Cc: Alissa M. Fitzgerald
> Subject: Followup to ZnSe request
> Hi all,
> On behalf of A.M.Fitzgerald and Associates, I'd like to 
> follow up on our ZnSe request as follows, with a modified process:
> All ZnSe islands (deposited through a shadow mask at external 
> vendors) will be fully encapsulated with LTO and/or sputtered 
> silicon (both deposited at external vendors as well) before 
> the wafers are brought back into the fab.  From this point 
> onwards, the ZnSe will NOT be exposed to the outside world at 
> all during any subsequent litho and etching steps.  Etching 
> of other regions of the wafer will be restricted to the MRC 
> and/or drytek4, and wbgeneral (using our own glassware).
> We'll be glad to do a TXRF analysis of a ZnSe sample if necessary.
> Please let us know if this is acceptable.
> Thanks,
> Ben Chui
> A.M.Fitzgerald and Associates

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