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I think abusing a write-off electron microscope to side step the need for masks is also an interesting idea, however, I believe acquiring wafers of sufficient q
by volemo 6mo ago
I think abusing a write-off electron microscope to side step the need for masks is also an interesting idea, however, I believe acquiring wafers of sufficient quality and depositing layers to be etched could be the bigger challenge here.
- jacquesm 6mo agoAnd the clean environment as a whole. That's a massive investment and there are a million ways to mess that up.
- bigbadfeline 6mo ago> however, I believe acquiring wafers of sufficient quality and depositing layers to be etched could be the bigger challenge here Definitely hard for a home fab but how about a community fab? Not necessarily a geographic community.
- gaze 6mo agofor making research grade devices you barely need a cleanroom
- Klaster_1 6mo agoThere's this guy doing clean room in a shed on YouTube: https://www.youtube.com/@Dr.Semiconductor https://www.youtube.com/@Dr.Semiconductor
- butvacuum 6mo agowafers are the easy bit.
- numpad0 6mo agoHold on, if I had an electron microscope, can I just put in a decapped cheap large format photodiode under it, jack the beam current way up, and start etching trenches on it?
- volemo 6mo agoI don't think so: it's a microscope, not a synchrotron. :D I meant "drawing" on a photoresist layer with a SEM and then wet-etching it. Also all silicon in a photodiode is doped, so the etched parts would be of little use, I believe.