I want to design electrode shadow masks for photodetectors .The shadow mask can be made from uncontaminated materials.
We do not have lithography fabrication at my university, so i want to design a shadow mask as a template to fabricate an electrode for a photodetector.
The design is shown in the picture below .
Salah Abdo I've done something similar before. How small are your desired features?
I designed a shadow mask for the front contacts of a solar cell, you can check the design process on the following paper. Several companies can fabricate the mask depending on the needs and usually require a CAD file with the design. Fotofab does photolitography masks, Gatewaylaser does laser machinery and for complex designs such as mine that require electro-formed nickel you can contact Thin Metal Parts. This companies are all from the US.
Conference Paper Optimization of n-type silicon solar cell front side contacts
A few years ago we purchased stainless-steel shadow masks from this company:
https://us.beta-layout.com/3d-print/
They require a CAD file containing the geometric features of the mask.
We currently use the masks for sputtering deposition.
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