Semiconductor Fabrication Basics - DIY Homemade NMOS FET/MOSFET/Transistor Step by Step

[@hosseinsanaye]

This video is ground breaking in the field of semiconductor fabrication to me. I've never thought of it as a possible DIY process. And surely the great explanation and deep understanding of what is the aim of every single step, makes it much more interesting to watch. Great Job Sam

[@vaio232]

diy process's are underestimated, one day bill gates did the same diy thing

[@atari7001]

If you thought that was cool, watch this guy make some very well crafted homebrew retro-tech (vacuum tubes): kzbin.info/www/bejne/e6vciYB7pdZnp9k

[@axeman2638]

@@vaio232 Gates stole his code.

[@albrix5]

@@axeman2638 he didn't steal anything. Xerox PARC was open for everyone to see, and he gave Kildall an opportunity to get with IBM with his CP/M, it wasn't until Kildall missed it that he adapted it into DOS.

[@axeman2638]

@@albrix5 ok fanboy.

[@hungryazhn]

Do you realize that 99% of electrical engineering students graduate with a degree and never see this?

[@stefanvandijk7114]

Unfortunately yes. Even people with a Master degree in Media technologie doesn't know on micro level how a transistor works. I think thats fundamental to know everything of technologie today.

[@almuhanadahmedsaidalhashmi4696]

Thanks god I'm in the 1% of them🤗

[@aimless3827]

Sad story. i watched this and learned to make one for fun but never have a chance to get in an electric engineer programs.

[@ahand4824]

I'm not an electrical engineering student, but I like electronics

[@PauloConstantino167]

That's because this is not part of electrical engineering. This type of thing is part of process engineering, chemistry, and material science. Of course this guy has hacked a transistor together in a cool way, but the actual science of this is beyond EE.

[@kevin.malone]

I had a channel where I did tech projects, and I remember thinking I might try to make a transistor from scratch, but quickly found it would not be possible with my resources. It's insane the level of specialization and generations of scientific knowledge that this small little piece of equipment rests upon. If society ever collapses, I wonder that it may be impossible to ever uncover this knowledge again without multiple centuries of consistent research.

[@Niohimself]

I'm a nanotechnology student. One day I wish to make some DIY transistors at home and your video is a great inspiration :)

[@SciHeartJourney]

Send me a message! I'd like to try myself. I started my own company. I don't think I can post company info here though.

[@lazyh-online4839]

@@SciHeartJourney I'm working on designing some processes involved in cheaper mass fabrication of semiconductors and solid state ionics (ion batteries for example) in a more efficient and compact form factor than conventional methods. If you might be interested in some collaboration work let me know.

[@fss1704]

@@lazyh-online4839 You might just want to throw your ion battery projects away, sincerely, if i were to push for some ion battery i'd use hot plasma in a termoentropic motor, can you imagine the energy levels you can get from that... if you're dispersing heat anyway that's the best source.

[@fss1704]

@@lazyh-online4839 I'm patenting the greatest power source humanity has ever seen, it uses global warming as a power source (no TEC or stirling shit) and it's made with 100% recyclable materials, damn i'm considering buying ethereum miners running on this system on a remote location just to multiply my money so that i can have money to buy more land.

[@fss1704]

@@lazyh-online4839 btw my system has nothing to do with my plasma suggestion above, my system covers static power storage and generation, but if i would want a car battery in the size of a smartphone with a high amount of power the "easiest" way would be to use a plasma because the plasma amount of power can break almost any chemical bond, if any day humanity can control amounts of power with that high level of density we will certainly need to countain plasma.

[@kateiry4719]

This dude: Homemade *Your home is so cool*

[@whatamievendoing]

Certainly the coolest home I've ever seen

[@bellini98-1]

So nice! This year I'm having a basic "electronic components fundamentals" course at college kept by a professor that used to do semiconductor research in the 80', it's so fascinating to see all the amazing processes he describes with nostalgia remade (with many simplification because it's not a university lab but who cares) by a new passionate person investing his energy in such an amazing field

[@alexkart9239]

I think, you should make more videos about DIY semiconductors. Many people want to see the stuff like this.

[@gregorbasse]

Only thing left to do is scale it down to 5 nm. Great work, glad YT recommended your videos recently.

[@DawnOfTheComputer]

This is seriously impressive work! I love seeing people push "home made" to the extreme. Especially when they're making my favorite type of active device. Whats the process like for making a GaN FET?

[@KripKilla-tw9lf]

So this man can make a computer from raw materials!

[@RAl2O3]

A n-type monocrystalline die is not exactly a "raw" material. This guy has really good skills anyway.

[@Funnyfish458]

If it was from raw materials he would synthesize his own hf and make sand into the silicon wafers

[@seifeslimene]

@@Funnyfish458 then I should search for "DIY How to turn sand into silicon wafer" and "DIY How to synthesize HF"

[@averagejoebitcoin]

The HF isn’t that hard. Turning sand into a silicon wafer….lol

[@TheHouseBlog]

Get the word out about this channel, there should be many more views. These are some great home brew semiconductor videos, thank you for sharing your efforts!

[@SamZeloof]

thanks!

[@edinfific2576]

2 and a half years later, and this video has only 36k views!? Sad!

[@blackred5155]

Now 107k views

[@Steve-uu7yx]

I've always wondered if it would be possible for one person to make semiconductors! I love how you just have a box in your fridge labeled "POISON"

[@whatevernamegoeshere3644]

13:12 I would seriously advice against since the fumes are crazy toxic. Also you absolutely need to mention that it cannot be stored or handled in glass because it will not only ruin your glass but it will also contaminate your process.

[@spartaleonidas540]

Where the f did he get HF

[@karanpsar9176]

Dude! Beautiful work! Get a patreon account, this deserves more attention!

[@SHRIRANGJOSHI_]

I added a like immediately after he gave the warning(1:00). From the warnings, I knew this person really knows what he does.

[@MrJakobLaich]

big thanks for this video, I'm researching MOSFET production processes for my game that I'm developing and this is a GREAT source! :D

[@vaio232]

I was looking for more info on this topic, the only other was this lab girl who did the same, but didn't explain as well as you did. thanks for the informative video.

[@KripKilla-tw9lf]

Sam: I’m going to make a mosfet Atmospheric oxygen: I’m about to ruin this mans whole career.

[@dimmiheev2542]

Очень познавательно. Я не ожидал что дома можно собрать транзистор.

[@gristlevonraben]

This is awesome. All that work. It's incredible. Thank you for showing this. It makes me wonder, man, if a person could create strips of adhesive materials and just build one with layers, like lego blocks.

[@axeman2638]

the problem is making it small.

[@gearinguplimited2324]

Incredible stuff - how many of us use devices and have no clue what goes into creating them. Let's have some more stuff Sam

[@faikharimi6224]

Very Nice way to Build...many thanks to you and your efforts , times you have spent for us...we are watching you from Iraq-Kurdistan

[@chlordk]

I went here to learn how to make a transistor with my kids. We have made resistors, coils and capacitors but this looks a little more complicated and dangerous to me. Wow.

[@Broken_Yugo]

Point contact diodes (i.e. crystal radio detectors) are pretty safe and easy though, can even look at doing a silicon carbide LED.

[@UFO_researcher]

Good job, you are very skilled, those wafers are incredibly fragile. It is interesting how such a complex device only costs about $1.

[@arnolz93]

Jesus fck, this is the best video I've seen. As an electronics engineering student I'm amused!

[@overbuiltautomotive1299]

Jesus is great i say look into it what one learns via truth may be even a bit quantum sciences is crazy n lovenley great all is a trip this life

[@evilseedsgrownaturally1588]

overbuilt automotive ... get help, my friend.

[@larrybud]

Amazing video. 8:40, there has to be a better way to break these?

[@zinckensteel]

It certainly looks like you've achieved gain, so it ought to work as an oscillator if you'd like to try. Congrats!

[@PauloConstantino167]

no shit sherlock.

[@FixDaily]

Great video sir. Question: How have you soldered the wires? Conductive ink?

[@Green_Globe_z]

Yes, a conductive silver paste I think. We use in our lab for making contacts. There are other ways, such as Ga-In eutectic or indium wire contact.

[@a3103-j7g]

I was under the impression that a mosfet had a source collector and a gate. now from your explanation I learn it actually has a source collector and a gay.

[@pfrillele]

Absoullute cool,did not thought this could be done at home.Thank you very much.

[@edgeeffect]

It doesn't look like we'll see your transistors on Digikey anytime soon ;) But man, you made transistors at home!!!!! It was only a couple of years ago that I thought "when I was a kid, I had instructions on how to make a diode substitute... I wonder if you could make a transistor", going to various electronics forums and heard loads of people ranting "Don't be such an IDIOT! It's completely IMPOSSIBLE!" Well, I think you and Miss Ellsworth have got a thing or two to say about that "impossible". Watching this back to back with Ron Soyland making homemade vacuum tubes is cool... I'm beginning to think my soldering factory-made components to circuit boards is, y'know, a bit prosaic. ;) It's cool that you're doing this and it's fantastic that you bring us around your lab to watch. Keep up The Great Work.

[@ddlc7022]

How is your process not affected by dust ? The ICs are done in a very clean environment

[@edaylward5948]

Sam, If I send you some superparamagnetic graphene, can you make me a working transistor?

[@MouldySoul]

I bet the postman loves you

[@balrampillai5314]

Hi! What an amazing project! - just sheer determination.... By the way at 12:33, you mentioned that water doesnt wet the wafer post the HF dip. Thats actually because the HF leaves a layer of H atoms on the surface, and that'll go away shortly after the dip. (This was way back in 2017, you probably know that! And HF is HF, so be careful!)

[@electronicmfr]

Do you know why a MOSFET with separate body & source (4 terminal) is not available in the market?

[@DAVIDGREGORYKERR]

Jeri Ellsworth did this sort of think.

[@lazyh-online4839]

@ACAB\\ Mela BAKAta what religion are you talking about?

[@GRBtutorials]

@@lazyh-online4839 It's a joke

[@lazyh-online4839]

@@GRBtutorials yeah, I obviously failed at understanding that, still don't quite get it sorry.

[@thelonewolf1757]

Can we do that without a lab? Instead of a furnace can we use canthal heater?

[@gvl610]

This man is a real genius!

[@iwanvanrienen6466]

Very impressive and inspiring Sam! Do you have any plans or ideas to make a metal layer on top of it to connect the individual mosfets?

[@SamZeloof]

Thanks, and yes I'm working on it :) Been sidetracked lately with other projects though.

[@Starter61]

I love your ZX81 avatar !

[@jimmybuck1993]

*he starts giving me safety info slowly skips past it.* My Gf: this is why you keep getting hurt.

[@kevin.malone]

Almost every technology we use has a simplified version which you can diy fairly easily. Cameras, microphones, electric motors. But when you think about a DIY computer, and simplifying down to just one transistor. It's not simple. It's actually close to impossible for the vast majority of enthusiasts. And the level of precision required for the silicon wafer he purchased isn't even taken into account. That alone is a feat of engineering.

[@tekvax01]

We had a thin and thick film clean room lab at our school. we did the etching, but the insurance companies wouldn't allow us to dope the silicon. we had the ovens and everything needed, but they still wouldn't let us dope the Si.....

[@ozkang654]

İ am an EE student i already have an idea on my mind how its made but still best video i have ever seen

[@edmondcasenas2565]

Your video tutorial making IC chips is very helpful...

[@stephensu4371]

hello, i’m wonder where did you get materials

[@dattashantarammahale9659]

no doubt to handle hazardous material their is standardise protocol of handballing & processing, nice work inspiring to upcoming talent & present professionals also thanks for such work cont., our good wishes always with you GD TC

[@thatoneguy99100]

What temperature did you grow your field oxide at? 2.5 hours seems awfully long for 5000A of wet oxide...

[@mrsc1914]

Really nice presentation. Your pace is excellent... With your equipment and knowledge, I am curious why/what your looking for ? or just having fun ... If I had all that stuff I would be wondering what oxides do what in what combinations to which base metals / ad nauseum ... First one which comes to mind is titanium .. its oxides have very 'energetic' properties

[@stalex91]

Any demo about difference between dry and wet oxide on the gate?

[@b3dubbs72]

could you sand blast with a fine grit to etch rather than using HF?

[@shanewhite352]

are the Intel processor in our computer uses the same mosfet but in nano scale? or entirely the chemicals are different?

[@asifalikhan8677]

Is there any sami automatic waysor machines for making these Mosfets?

[@weirdsciencetv4999]

Are there any processes that use a less dangerous acid than HF? Even if the results are slightly less optimal?

[@Adrien_160]

Sadly HF is the only acid that can dissolve silicon

[@weirdsciencetv4999]

@@Adrien_160 i have seen patents for non-HF but i’m looking for something a DIY has done

[@panteltje]

I am glad I can just buy the IRLZ34N for a few dollars... But very informative video. Seems fun.

[@jvon3885]

That's the point. What if you find yourself in a position where you can't get access to aliexpress or bangood anymore? Or what happens if they have a shortage of components? But the number one reason is to be able to do it yourself.

[@МаксимФ-й7н]

Sorry, would be cool if you could explain the topic of IGBT

[@gristlevonraben]

do they make transistors with both a negative and positive gate, one on top and one on bottom?

[@pfrillele]

From where did you get the wafer?Thanks.

[@fahrettinatik1412]

Super mega, giga, tera good way to do mosfet, ı liked it. It is pure science 🎉

[@BensWorkshop]

Quite interesting. I wonder how many MOSFETs you could make on a wafer on that size now, having seen how much more sophisticated your processes have become.

[@malcolmholmes115]

So I need to order an HEV suit before working on it?

[@momi5656]

plz how can i dope silicon whith aluminium for p_type and antimony for n_type ?? bcs i dont have phosphor and boron ... i have just Al & Sb and thank you :-)

[@daveb5041]

*Sometimes when I run out of mosfets to make my blinking LED circuits I will make my own in the kitchen. Amazing. Thought emporium isn't sht compared to this level of DIY*

[@mee_is_sus]

2017: Making transistors from scratch 2024: Making computer processors from scratch

[@petercheung63]

I am super interest, is there any private course? I can fly to USA to learn, thanks

[@ardecki7961]

That was amazing. What are limits of home laboratory in your opinion? Could you for example create some VERY simple processor in a couple of years?

[@SamZeloof]

+Marek Ardecki yes, that is possible. Main limits are air particulate contamination.

[@xxEndermelonxx]

Awesome vid! Where could one find the photoresist to do this?

[@synth1002]

Is there any alternative for HF?

[@user-ue8vp6fy8y]

Thabk you for this i want to make the initial resources too. I want to mine the metal and melts it down.

[@gene7511]

Heya, have you tried making an LED using this/a similar procedure?

[@lazyh-online4839]

I've seen people make organic light emitting diodes before, using a somewhat similar proceeds.

[@marksmod]

why not use a cylindrical piece of metal heated to 115 `C as a base plate during the spin coating process?

[@TheRailroad99]

Thanks to you and the YT algorithm. Another great video! You earned a sub!

[@marcsmithsonian9773]

I want to builid audio amplifier with this device, can you make 4 pieces of N channel with similar characteristics?

[@AlyFyrdaush]

what are the specifications and how to change it what to do?

[@davidedgar7338]

maybe one of those bottle warmers for reheating baby bottles of milk would do for the acid solution. i think they warm to about 40 celcius.

[@aaronregan5061]

Wow this is great keep up the good work. Every thing is dangerous, u only live once!!

[@khoanguyen5805]

Thank you for sharing your knowleadge !!

[@charleslambert3368]

Furiously taking notes in case industrial society collapses or i get isekai'd to 1930s bell labs or something

[@anmolarora8201]

what is name of mask that you have used in this process?

[@change_your_oil_regularly4287]

Can/have you made jfets?

[@the_eminent_Joshua_E_Hrouda]

Is a BJT easier to make??

[@annaoaulinovna]

Use patterned source drain area drawing make long effective field. Use photomasks photoresists and optical lenses.

[@drb0mb]

seeing that childlike handwriting POISON on the package reminds me of drawing on the lids of my moms leftovers when i was a little weenie

[@NAANsoft]

Excellent! Demonstrating high-tech understanding of chemistry and quantum theory. And in a "kitchen" lab :-)

[@sniperdaoud]

very good video. but you have to put the camera in the other side, because I can't show any thing

[@ExplosiveAnyThing]

That was excellent but I think you should measure the body diode....

[@romemaster]

This is what I want when searching for “building a computer”

[@keantoken6433]

Now explain the weird curve traces! Seems to me this MOSFET is very very slow, no surprise with how large it is I guess. What is the gate capacitance? BTW, if threshold voltage is too high due to a too thin gate layer, that means you must operate closer to the destruction voltage of the oxide layer, so perhaps this large slow MOSFET wants to be run at much higher current and then you would get less loopy curves? But then perhaps the drain and source resistance are high due to the silver epoxy leadouts. This would explain why the MOSFET is already so heavily saturated - increase test voltage? If so then these leadouts are more suited to a high voltage low current device, whereas you put them on more of a low voltage high current device. First and second DIY curve traces show a MOSFET not driven into Rds limit by the test. But the gate voltage steps are crowded together. Could it be the DS leakage is high so the gated current is only a fraction of the output current? Or perhaps that was intentional? Last MOSFET shows something that looks similar to quasi-saturation in BJTs, where you have a collector resistance which rises to a final value as voltage increases. Maybe this is no surprise as a MOSFET could be a BJT if you removed the oxide layer.

[@VeLawrence]

Hey man you do a more than great job, you definitely have outsanding capacities, Thanks for sharing all this great stuff with us! Btw one question where do you find the silicon wafers? Do you think those available on ebay/Amazon can serve to start doing this? Thanks in advance!

[@stefanbanev]

What about vacuum MOSFET? Just a few nanometers gap between two needles tips, you even do not need vacuum for such small gap since at such distances the molecules of air would have a little effect. With distance ~1nm the voltage can be a fraction of volt to ensure electron emission, the gap size can be easily adjustable to play and to tune the devise. I guess that the gap size is effected by the temperature, it perhaps explains why such technologically simple device did not get into technological realm...

[@jlev505]

That’s really cool you know how to do that. For me I’d rather spend a dollar or 2 and buy a mosfet. I guess when society collapses you will have working electronics and can charge hundreds for a mosfet. It will be a very sought after skill, as long as all the components are available.

[@renatox5288]

Some people are fans of michael jackson, beyonce, justin bieber. But I'm your fan man

[@renatox5288]

and I'm just a civil engineer

[@skittermckitter05]

Everyones obsessed with the tiniest mosfets possible but is anyone making the biggest?

[@omsingharjit]

Plz also make Lead telluride based N and P type Simi conductor for making Diy Thermoelectric , lead telluride because it is available in lead acid battery s . !!!!

[@BieAnimation]

Great job and awesome video!! Thanks for share knowledge

[@mokhtarzerdali]

Why some critical steps are hide from the video like drive in poly -Si process, and metal coating

[@elchippe]

Is a simple planar process with an oxide gate and he is doing the connections with silver epoxy.

[@1kreature]

Awesome videos and awesome skills. But... You should get smaller sized gloves. Makes it much easier to work when they fit.

[@mahamadousacko823]

Pour fabriquer plus petit transistor avec 2 Lithium et 1 Bore (Li2B).

[@omsingharjit]

What mean of crystal orientation 100 how to do this , why it needs to do ?

[@TheRainHarvester]

Did you do this at a university before? Great info!

[@zurichsee706]

he learnt by himself

[@tootaashraf1]

@@zurichsee706 then why does he go to university