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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Dear Aamer,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Our open access e-beam evaporator is regularly used to evaporate gold on perovskite materials. We haven’t experienced any issue with this.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Only point of attention, pumping time may go bit longer to reach the required vacuum. Some users reduce the system base pressure when they use it for evaporating gold on perovskite.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Fouad<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">*************************************<o:p></o:p></p>
<p class="MsoNormal">Manager ANFF ACT Node<o:p></o:p></p>
<p class="MsoNormal">Australian National Fabrication Facility<o:p></o:p></p>
<p class="MsoNormal">Research School of Physics<o:p></o:p></p>
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<p class="MsoNormal">Australian National University<o:p></o:p></p>
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<p class="MsoNormal">Tel: + 61 2 6125 7174<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">Email: <a href="mailto:fouad.karouta@anu.edu.au">
<span style="color:blue">fouad.karouta@anu.edu.au</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> labnetwork-bounces@mtl.mit.edu <labnetwork-bounces@mtl.mit.edu>
<b>On Behalf Of </b>Dr. Aamer Mahmood<br>
<b>Sent:</b> Sunday, 10 November 2019 9:54 PM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] Cross contamination due to evaporation on lead containing perovskite material<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hello all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have been asked by a colleague to evaporate gold on some organic photovoltaic cells. The cells contain lead containing perovskite material.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The evaporator used traditionally for perovskite based research is currently down and to save time the use of another evaporator used for evaporation of metals and reactively deposited metal oxides is being explored.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am concerned about contamination of the chamber – especially by lead.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I would appreciate relevant experiences and opinions.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-Aamer Mahmood<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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