Pfeiffer Vacuum

Vacuum Solutions for Metrology

High output production in a very competitive market environment is the key challenge and requires highest product quality and yield management. Since feature sizes are shrinking to 65 nm and beyond, inspection tools to quickly find nano-scale killer defects on wafers had to be developed. Inspection typically applies to such items as reticles (masks), wafers, etc.

Most common technologies used for wafer inspection are scanning electron microscopes (SEM) and laser scanning microscopes (LSM). To get to the highest resolutions, vibration free ultra high vacuum in the range of 10-11 mbar to be applied for generating the E-beam in the SEM column. The wafer processing chamber needs high vacuum, where a vacuum in the range of 10-3 - 10-4 mbar is required for loading and unloading the wafers (L/L).

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Pfeiffer Vacuum GmbH
Berliner Strasse 43
35614 Asslar

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Pfeiffer Vacuum GmbH
Postfach 1280
35608 Asslar

T +49 6441 802-0
F +49 6441 802-1202

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