[labnetwork] Thoughts about sunlight entering cleanroom

[Matthias Pleil]

You can apply yellow film to the windows to filter the outside light.  Having windows does a lot for your folks.


Kind Regards,

Matthias Pleil, Ph.D.
Director Manufacturing Engineering Program
UNM MTTC Cleanroom Manager
Research Professor & Senior Lecturer III of Mech. Eng - UNM
PI - Support Center for Microsystems Education
Find great curriculum at: www.scme-support.org<http://www.scme-support.org/>
(505)272-7157

Join the MNTeSIG Team at www.mntesig.net<http://www.mntesig.net/>
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From: labnetwork <labnetwork-bounces at mtl.mit.edu> on behalf of Joseph Losby <joseph.losby at ucalgary.ca>
Sent: Wednesday, February 22, 2023 11:04 AM
To: labnetwork at mtl.mit.edu <labnetwork at mtl.mit.edu>
Subject: [labnetwork] Thoughts about sunlight entering cleanroom

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  [EXTERNAL]

Hello, in the planning of our new facility the architects have placed windows along a side of the cleanroom (which is fine).  Outside of the windows is a hallway which is lined with large windows to the outside.  This would allow for sunlight to pass through two sets of windows and into the cleanroom.  Although standard windows are adequate for filtering a majority of shorter wavelength UV, some of the longer wavelength UV (UV-A, ~300-400 nm) will still transmit.  It is of my belief that it's standard practice not to have sunlight entering the cleanroom (especially a litho area).

Are any of your cleanrooms exposed to sunlight (I haven't seen any) and, if so, what type of window filtering do you use?

Cheers,

Joseph Losby, PhD.
Operations Manager, qLab
Quantum City, University of Calgary
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