Making Microchips at Home - Cooking with Jeri Part 2

I show how to etch active areas, spin coat silicate dopants, diffuse source/drain, and test homemade nmos transistors and diodes.

Category:

Education

Tags:

• Home chip lab
• mos
• nmos
• pmos
• transistors
• diffusion
• electronics
• jeri ellsworth
• dopant
• boron
• phosphorous
• wells
• active
• drive-in
• furnace
• semiconductor
• pn junction
• diode

[AntiProtonBoy]

Will you make a ring oscillator? :D

[JeriEllsworthJabber]

@AntiProtonBoy I plan on it, but I have to make devices with better threshold or bias each trasistor separately.

[dmlandrum]

Clearly, your next build is going to have to be a cleanroom. :)

[JeriEllsworthJabber]

@dmlandrum Sadly it would be a dirtyroom shortly after I moved in.

[jacgoudsmit]

Would the curve on the tracer stabilize faster if you would make your transistors smaller?

[JeriEllsworthJabber]

@jacgoudsmit Yes.

[JeriEllsworthJabber]

@kapaka12 Damn! I forgot to say "Don't warn me about chemicals" like in the first video.

[perlpower]

Do you think you could build an amplifier circuit with your homemade transistors? It would be interesting to hear the sound characteristics of them.

[fingerboy18]

Ohmic :)

[GGTrashes]

Bad pun time!

O! That's some DOPE stuff!

I guess you cleaned the drain, with drain cleaner!

YEEEEAAH!

[markd514]

I wan to see your electronics lab

[dtiydr]

Really great work!

[Otharis]

I wonder why your transistor is leaky / needs a negative gate voltage, is it because your wafer is contaminated with a thin layer of n-type silicon (due to an imperfect oxide layer when you started doping) or might it be the result of a photoelectric effect (your junction is of course rather large). Did you also test it in the dark?

[lennyhome]

Make tunnel diodes.

[jeriellsworth]

@fettfettmerafett Not very small without a resist process.

[fettfettmerafett]

How small do you think you could make them?

[chrismon1001]

Your the only reason that I still watch youtube.