Nice sputtering system btw. It is great to see great guys like you passionate by the semiconductor field. You earned my fullest respect and thank you for your work and TH-cam videos.
The process is much more interesting than the testing. You need to make more videos. I have been following you for years and wish you had posted more as you built your lab instead of just some updates.
As i write a driver for a hp4284 LCR Meter this video comes in. Sam you are my hero! Sam you should do some GOI tests on your mos-cap. TDDB, HCI or VRAMP would be cool to see on your process.
People cut power cords to indicate that a machine is broken, so that others don't try and use it. I've seen researchers take coaxial cable out of a trash can and try to use it. Much better to cut of the end and save everybody the trouble. Cool video, by the way. And I love your lab!
Don't forget about the ~2 nm of native oxide on the wafer before the thermal oxide growth. So 17.5 nm seems about right!! That is pretty cool, congrats. If you need in the future, you can etch away the native oxide with HF (or BOE - buffered oxide etch) before your thermal oxide growth. But HF is quite dangerous and likely not worth trying to set up a wet chemical bench in your lab.
About the thickness of the SiO2: I would expect it to be difficult at such a small value to really measure this thickness accurately. Would the layer not just contain a large gradient in oxygen concentration due to the diffusion of oxygen into the silicon? Or, in other words, is it not just a gradual transition going from SiO2 at the surface, to SiO, to Pure Si in the bulk?
Good point, yes, there is probably a TEM cross section of this online. Really what I’m measuring here is the effective oxide thickness from an electrical point of view
I absolutely love your Videos. Keep up the *Awesome* work. Your channel inspired me to try to build my own Transistor. I am currently working on my Vacuum setup, can't get the pressure low enough for good quality coatings but with my new pump this problem will be history. Thank you so much for the great work you do here on your channel :)
[Chorus: Offset] Raindrop (drip), drop top (drop top) Smokin' on cookie in the hotbox (cookie) F**kin' on your b**ch she a thot, thot (thot) Cookin' up dope in the crockpot (pot)
I tried banging my oven for 5 minutes straight and it didn't turn on.... Maybe it needs more banging to pre heat. Ill be really hungry by the time this works...
I have a similar HP4145A and would be interested in performing some CV measurements as well, there are even other 410s on eBay. Could you shine a bit of light into how you connected the 4145 to the 410 and what custom function you used to plot it? Thanks!
This is alla absolutely incredible. I don't know how much you habe studied and thinkered with this stuff to have the skill and confidence of setting up such an amazing lab, but it sure must have been a lot of fun
One thing I could never really find, and would be interesting to see from you: given a fixed temperature, how the leakage current varies of a MOS (with Vgs=0) I've found some data under the title "sub threshold conductivity" but I was never sure if my calculations based on that were correct or no. The manufacturers give huge ranges of leakage current for MOSFETs, and I could not get more information about it.
@@namibjDerEchte it also depends on channel length and other things, many of which are susceptible to manufacturing variations. The exponential nature of the subthreshold current, this might explain the huge range the manufacturer gave you.
Power cords are cut so they don't tangle up in trash. This is mandatory in some european countrys when You are going to trash something. They leave (any) device side by trash, but the cord is cut.
i understand it's probably really dumb to ask, but why would capacitance even depend on the bias voltage at all? upd: ah, later you explained the inversion process
Hey Sam, really like your video. Sadly your links dont work for me. Do you think you could upload them again? This would be so nice!!! Thanks and keep up with the great work
It is too old for it to have any undepreciated value. Cutting the cord is a simple way of emphatically stating "Do not attempt to use this device". I have cut off cords as a way of indicating that I have checked out the device. I have declared it broken and not worth repairing. In a similar vane I have cut off the cords of unsafe power tools. All of this is done with the knowledge that anyone that is skilled enough to repair the device will not be inconvenienced by having to attach another cord.
@@hamjudo There's no telling when it was cut off. Also, even old specialty test equipment can be expensive. Third, they can probably claim the cost of replacing it or what they spent on it (capital investment).
Cut power cords? Just last week on a discarded piece of lab equipment, had the same thing. Older cords, plugs and equipment that can't pass the "tag testing" get chopped, I suspect. I want to find more equipment!! Help. I just acquired a stereo bench microscope. Whoopee!
They cut the power cords so ppl won't use dangerous/faulty electronics, sometimes it is the ppl who clear our labs, who are in a rush and don't know or care what they are cutting because they sell it bulk themselves. Where I live, the councils pay people to drive around and cut the cords on electronics that are being thrown out (the day before and the day of, it is scheduled) and then later they pay someone to come and pick it all up... They did it to an amp from the '70s I picked up (and others), just wanted the transformer/pots/knobs etc anyway but it made me sad - such a pointless waste!
People cut the power cord on old electronics to keep people who don't know better from just plugging it in. Doing so with out inspecting or replacing old components can often fry the whole system. So one failed capacitor that wasn't inspected could end up turning the whole thing into a paper weight.
Sorry to comment again… But I know a lot of folks cut power cords basically to let the buyer know that it’s not ready to go and that they can’t just plug it in. That keeps buyers away who would assume it works and plug it in… Even if the seller stated otherwise. It’s a good way to guarantee the person buying it knows it needs repair.
Thank you your video. I have some question, if you have some time help me plz:) First, I wanna use bottom contact then can i use dry etcher for bottom to etch SiO2? Then, i will make bottom contact with Al with sputter. And I learned that there is ideal threshold voltage in situation that Parameter(Body doping, oxide thickness, Gate metal) is fixed. I want to ask if you found ideally threshold voltage In this experiment or not? Thank you. For your help and good video. Have a nice weekend.
Great job. Now You shoud produce small IC to public. It is yet possible to built better processor than Intel & AMD. In 10 Years You shod try to win with them.
Often it's done to mark a piece of gear as 'Do not plug this in again. Danger.'. Makes you at least think about WHY they would have cut it off like that and stops people from just plugging it back in when there could be something wrong to the point of causing fire or danger.
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Nice sputtering system btw. It is great to see great guys like you passionate by the semiconductor field. You earned my fullest respect and thank you for your work and TH-cam videos.
Intel, tsmc and AMD need talented people just like you! Keep it up :)
He make her own "Intel" by itself
Intel et al would be a waste of his time. I'm sure knows this.
The process is much more interesting than the testing. You need to make more videos. I have been following you for years and wish you had posted more as you built your lab instead of just some updates.
Man, your work is really, really impressive! Please post more!!
As i write a driver for a hp4284 LCR Meter this video comes in. Sam you are my hero! Sam you should do some GOI tests on your mos-cap. TDDB, HCI or VRAMP would be cool to see on your process.
what a great home lab , very impressive
People cut power cords to indicate that a machine is broken, so that others don't try and use it. I've seen researchers take coaxial cable out of a trash can and try to use it. Much better to cut of the end and save everybody the trouble. Cool video, by the way. And I love your lab!
I confirm, before the era of the internet that was standard procedure in eastern Europe.
Congrats to your recent bay sale, this was really a head shaker. I hope that will help you to further finance your chippies.
Don't forget about the ~2 nm of native oxide on the wafer before the thermal oxide growth. So 17.5 nm seems about right!! That is pretty cool, congrats. If you need in the future, you can etch away the native oxide with HF (or BOE - buffered oxide etch) before your thermal oxide growth. But HF is quite dangerous and likely not worth trying to set up a wet chemical bench in your lab.
You're forgetting that it's probably necessary to make low-integration ICs.
You are better equipped than my whole country!
This channel gives me hope. Really incredible content!
About the thickness of the SiO2: I would expect it to be difficult at such a small value to really measure this thickness accurately. Would the layer not just contain a large gradient in oxygen concentration due to the diffusion of oxygen into the silicon? Or, in other words, is it not just a gradual transition going from SiO2 at the surface, to SiO, to Pure Si in the bulk?
Good point, yes, there is probably a TEM cross section of this online. Really what I’m measuring here is the effective oxide thickness from an electrical point of view
@@SamZeloof Thanks Sam. By the way, you managed to make yet another high-level video!
Why is your sputtering setup so damn sexy
I absolutely love your Videos. Keep up the *Awesome* work. Your channel inspired me to try to build my own Transistor. I am currently working on my Vacuum setup, can't get the pressure low enough for good quality coatings but with my new pump this problem will be history. Thank you so much for the great work you do here on your channel :)
Impressive and very COOL!
Niiiice, Sam posted.
shout out to my loyal fans
When you give money to great minds you will get Genius like him.
Still loving your channel keep doing what you are doing
This is some amazing stuff man, how long have you been doing this? Great work, keep it up!
Props to whoever donated the probe station. Nothing is better than science in the home.
I would love to have one of your chips. This is what art was meant to be.
It’s the video we’ve all been waiting for
[Chorus: Offset]
Raindrop (drip), drop top (drop top)
Smokin' on cookie in the hotbox (cookie)
F**kin' on your b**ch she a thot, thot (thot)
Cookin' up dope in the crockpot (pot)
I like the way you can get a 15nm +- 2.5nm oxide coating by 'banging it in the oven for 4 min 30 sec'.
I tried banging my oven for 5 minutes straight and it didn't turn on.... Maybe it needs more banging to pre heat.
Ill be really hungry by the time this works...
Definitely deserve a subscriber 👏🏻👏🏻
Awsome stuff.
At my work you must cut a powercord when equipement is faulty to prevent dangerous situations. But maybe he just neede a powercord.
I like this channel.
From indonesian 🇮🇩
I have a similar HP4145A and would be interested in performing some CV measurements as well, there are even other 410s on eBay. Could you shine a bit of light into how you connected the 4145 to the 410 and what custom function you used to plot it? Thanks!
Fantastic video! Thanks for the explanation(s).
Fixing that CV plotter would be an incredible video
This is alla absolutely incredible. I don't know how much you habe studied and thinkered with this stuff to have the skill and confidence of setting up such an amazing lab, but it sure must have been a lot of fun
Thanks for posting Sam.
One thing I could never really find, and would be interesting to see from you: given a fixed temperature, how the leakage current varies of a MOS (with Vgs=0) I've found some data under the title "sub threshold conductivity" but I was never sure if my calculations based on that were correct or no. The manufacturers give huge ranges of leakage current for MOSFETs, and I could not get more information about it.
It is a function of threshold voltage, and that one is hard to control better than +-5~10%.
@@namibjDerEchte it also depends on channel length and other things, many of which are susceptible to manufacturing variations. The exponential nature of the subthreshold current, this might explain the huge range the manufacturer gave you.
You are awesome. I really hope at least one of the bilionaires coming out of the new criptocurrencies funds you, no strings attached. You deserve it.
Amazing. Thank you!
Your lab is a dream!
congratulations man, good job.
i got pretty much helps. thank you!
Not sure if you just didn't show it but, you might be starving your oxide growth if you aren't forcing steam through your furnace at the same time.
You are a genius bro
Thank you. Subscribed
very cool sam
Excellent job as always. I am sure you know Plummer's book. Would you reccomend it? Do you haveanother good book to reccomend?
Power cords are cut so they don't tangle up in trash. This is mandatory in some european countrys when You are going to trash something. They leave (any) device side by trash, but the cord is cut.
i understand it's probably really dumb to ask, but why would capacitance even depend on the bias voltage at all?
upd: ah, later you explained the inversion process
Hey Sam, really like your video. Sadly your links dont work for me. Do you think you could upload them again? This would be so nice!!! Thanks and keep up with the great work
i want a lab like that its so nice
Hi, very nice. Unfortunately, the link in description does not work...
They cut the power cord so that they can write off the equipment value on taxes when disposing of it.
It is too old for it to have any undepreciated value.
Cutting the cord is a simple way of emphatically stating "Do not attempt to use this device".
I have cut off cords as a way of indicating that I have checked out the device. I have declared it broken and not worth repairing.
In a similar vane I have cut off the cords of unsafe power tools.
All of this is done with the knowledge that anyone that is skilled enough to repair the device will not be inconvenienced by having to attach another cord.
@@hamjudo There's no telling when it was cut off. Also, even old specialty test equipment can be expensive. Third, they can probably claim the cost of replacing it or what they spent on it (capital investment).
Do you think it'd be possible to create an in-house 8-inch fab? Would help so many ppl during these times...
Cut power cords? Just last week on a discarded piece of lab equipment, had the same thing.
Older cords, plugs and equipment that can't pass the "tag testing" get chopped, I suspect.
I want to find more equipment!! Help. I just acquired a stereo bench microscope. Whoopee!
They cut the power cords so ppl won't use dangerous/faulty electronics, sometimes it is the ppl who clear our labs, who are in a rush and don't know or care what they are cutting because they sell it bulk themselves.
Where I live, the councils pay people to drive around and cut the cords on electronics that are being thrown out (the day before and the day of, it is scheduled) and then later they pay someone to come and pick it all up... They did it to an amp from the '70s I picked up (and others), just wanted the transformer/pots/knobs etc anyway but it made me sad - such a pointless waste!
Can you make oscilloscope DIY with least error?
People cut the power cord on old electronics to keep people who don't know better from just plugging it in. Doing so with out inspecting or replacing old components can often fry the whole system. So one failed capacitor that wasn't inspected could end up turning the whole thing into a paper weight.
Do you think it would be practical to integrate a probe station in an existing wire bonding machine?
You need a HP 9000 150 touch screen computer.. Get your Gear all Linked up, and Logged all the data..
Sorry to comment again… But I know a lot of folks cut power cords basically to let the buyer know that it’s not ready to go and that they can’t just plug it in.
That keeps buyers away who would assume it works and plug it in… Even if the seller stated otherwise. It’s a good way to guarantee the person buying it knows it needs repair.
Was that like a quartz microbalance?
Do you have a company to do all this stuff? These equipment are quite expensive.
Can you show how to meassure IV graph using the same equipment please?
it would be the same idea with different settings on the semiconductor characterizer.
Thank you your video.
I have some question, if you have some time help me plz:)
First, I wanna use bottom contact then can i use dry etcher for bottom to etch SiO2? Then, i will make bottom contact with Al with sputter.
And I learned that there is ideal threshold voltage in situation that Parameter(Body doping, oxide thickness, Gate metal) is fixed. I want to ask if you found ideally threshold voltage In this experiment or not?
Thank you. For your help and good video. Have a nice weekend.
Hmmmm what if reactivate polish semiconductor fabric Unitra CEMI
can one use plasma cleaning to "wipe" a used silicon wafer to remove all built up layers?
Can you make an LED?
Do you own a company to produce these semiconductors?
Are you okay samey
kewl
Great job. Now You shoud produce small IC to public.
It is yet possible to built better processor than Intel & AMD. In 10 Years You shod try to win with them.
Pls make own chip pls
"Don't know why anyone would cut a power cord?" Two reasons; $0.01 or they need power to something else
BTW, have no idea why I'm subscribed to this channel, but bad ass
Often it's done to mark a piece of gear as 'Do not plug this in again. Danger.'.
Makes you at least think about WHY they would have cut it off like that and stops people from just plugging it back in when there could be something wrong to the point of causing fire or danger.
13:30 Your dopant concentration seems imperial :D