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Hi Esta,</div>
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I¡¯m not sure what chemistry you use on the Fiji200. Typically, a thermal HfO©ü process with TDMAH and H©üO requires temperatures above 100¡ÆC. I¡¯m guessing you¡¯re running PEALD at 80¡ÆC instead.</div>
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In our experience, we haven¡¯t encountered this issue in either our thermal or PEALD chambers. Problems usually arise when the tool becomes heavily coated, and the coatings begin to peel off. In such cases, a thorough tool cleaning generally resolves the issue.</div>
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Best,</div>
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Bangzhi Liu</div>
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Associate Research Professor</div>
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Penn State</div>
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