<div dir="ltr"><div><div><div><div><div><div><div><div>Rick,<br></div>We separate our evaporators into high, medium, and low volatility metals.<br></div>Zn is about the highest volatility metal we allow. (~0.1torr at ~400 C).<br></div>This translates into the possibility of Zn "boiling off" shields and other surfaces <br>if you use the evaporator for a medium or low volatility metal in the future.<br></div><br></div>Bottom Line - dedicated chamber for high volatility materials recommended.<br></div>Chamber clean and shield change recommended after Zn processing if you plan<br></div>to return tool to medium and low volatility materials in the future.<br><br></div>Lesker has a useful evap / sputter materials deposition chart:<br><a href="https://www.lesker.com/newweb/deposition_materials/materialdepositionchart.cfm?pgid=0">https://www.lesker.com/newweb/deposition_materials/materialdepositionchart.cfm?pgid=0</a><br><div><div><div><div><div><div><br></div><div>Bill Flounders<br></div><div>UC Berkeley<br></div></div></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Aug 14, 2017 at 8:16 AM, Morrison, Richard H., Jr <span dir="ltr"><<a href="mailto:rmorrison@draper.com" target="_blank">rmorrison@draper.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">HI Everyone,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Does anybody have any experience with evaporation or sputter of Zinc? Any concerns out there?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks<u></u><u></u></p>
<p class="MsoNormal">Rick<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Richard H. Morrison<u></u><u></u></p>
<p class="MsoNormal">Principal Member of the Technical Staff<u></u><u></u></p>
<p class="MsoNormal">Draper<u></u><u></u></p>
<p class="MsoNormal">555 Technology Square<u></u><u></u></p>
<p class="MsoNormal">Cambridge, MA<u></u><u></u></p>
<p class="MsoNormal">02139-3573<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Work <a href="tel:(617)%20258-3420" value="+16172583420" target="_blank">617-258-3420</a><u></u><u></u></p>
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<p class="MsoNormal"><a href="http://www.draper.com" target="_blank">www.draper.com</a><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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