HgCdTe or mercury cadmium telluride

Ed Myers edmyers at stanford.edu
Wed Feb 4 13:47:14 PST 2009


We also have had verey negative experiences with ZnSe.  On the other 
hand there was some successful work on MgF2


At 01:26 PM 2/4/2009, John Shott wrote:
>Dmitry et al:
>I think that we need to know a heck of a lot more about what you 
>propose to do with this stuff.  I've never worked with HgCdTe 
>directly but had some professional contact in my dim, dark past with 
>people that were using HgCdTe for IR detectors.  My recollection 
>(which, admittedly, may be bad ....) was that a photoresist bake at 
>90 deg C had to be taken into consideration because of the potential 
>volatility of Hg.  I seem to recall that they also relied on ultra 
>low temperature .... that is, nearly room temperature, 
>photo-activated deposition processes because 300 degree PECVD was too hot.
>So we need to know specifically what you think you need to do 
>because we simply don't have the resources (personnel or equipment) 
>to generate a subset of tools that are potentially mercury contaminated.
>Jim McVittie is out this week but, as I recall, in his dim, dark 
>past he used to work with a number of exotic II-VI materials and may 
>be able to shed more light on this matter.  I don't expect that he 
>will be in, however, until the first of next week.

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