[labnetwork] CdTe Safety

[Kathy Anderson]

Hello Lab Network,

Will you share with us at the University of Utah your experience analyzing the occupational hazard of processing CdTe in your research lab?

We acknowledge the sublimation energy for CdTe is low, and the Cd escapes more readily leaving a Te rich surface.  At the same time, quantifying the health and operation risks associated with e-beam and sputter processing is proving a challenge as we communicate with our community of researchers what is and is not allowed in our toolset and why.


  *   Are you depositing films onto CdTe substrates using e-beam evaporation?  If not, why?
  *   Are you depositing films onto CdTe substrates using sputter?  If not, why?
  *   What is your lab's procedure for maintaining a safe breathing space during e-beam and sputter chamber maintenance?
  *   How do you dispose of CdTe contaminated solids waste?
  *   How do you dispose of deposition equipment pumps that may be contaminated with CdTe as they fail?
  *   What is your lab's CdTe substrate surface preparation process before e-beam or sputter?
  *   Do you have equipment dedicated to CdTe processing as well as separate equipment where CdTe substrates are prohibited?  If your deposition equipment is not separated between CdTe vs non CdTe, what limitations do you set on those processes to ensure cross-contamination of Cadmium or CdTe is negligible from run to run?


Regards,

Kathy Anderson
Cleanroom Process Engineer and Safety Officer
801-213-6555
801-440-1465

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