Silicon Carbide: A Power Electronics Revolution

So the famous Cree white LEDs are SiC based?

“I love rocks”… me watching your videos

one more great video.

Amazing! I was wondering as you talked if these Soviet inventions contributed to the (relative) success of the Venera probes. Nice that you mentioned later that they did indeed.

Could you do a video on Atomera’s tech called MST???

awesome presentation sir

Your videos are very thorough and well made

You should do a similar video for GaN

Wonderful channel
I'm new to it with my research of physics in plasma and hi voltage.
Keep up the good work of furthering understand of that world in science
Thank you very much

2nM silicon architecture is the limit of current Lithography methodology. Sandwiched Silicon/Carbon Combed Matrix or SSCCM will allow 1nM-.025nM Natural Growth Circuitry (NGC) of which will make Lithographic Semiconductor production look like hand-built radio tubes. Moreover, Pico Volt Node Hopping (PVNH) will allow a near flawless ability to create circuits that act as Quantum Tunnels for up to 400+Giga flops of bandwidth under 100 Megahertz! Just think of a snowflake with the processing power of 50,000 modern 5Ghz cores.

Good to know you can be funny too. And even if a joke is not funny it's still cute and comfortable. I thought you were some kind of robot or borderline Asperger's!!

SiC = carborundum; grinding stones.

First time I heard of SiC, outside of shop class, was when Cree started, and their first products where SiC, high temperature transistors. The original (dim) blue LEDs came out later. I bought a few in 1989. Next time I wanted to buy more, the distributor informed me, that they no longer stocked them. They had been replaced by these new LEDs, made of GaN. The LEDs we know now.

Wolfspeed, formerly Cree. Good to know.

Thank you and I'm sorry if you thought i was being a smartass. 😁 Maybe a little

I work in the semiconductor industry and we are currently experimenting with improved SiC chemical mechanical polishing methods :)

“I love rocks”…subscribed!

Awesome! I wonder if this'll help lead to a doped graphene semiconductor?

is there a silicon carbide mosfet or transistor for Audio amplifier project?...it seems there is only N-channel siC i have not seen a P-channel siC...

You liked Loki? Why?

Long live soviet science.

Maybe note that Microcemi has been snagged by Microchip.

"it's minerals, not rocks"

Do you think we will see this tech come to CPUs?

Wow... impressive, but this is all to tell me... if they are this sophisticated in the world of metallurgy and chemistry they could easily build a modular factory constructed LFTR i.e. Liquif Fluoride Thorium Reactor tomorrow if they wanted... Someone who is sucking up hundreds of BILLIONS of government funds building and selling super dangerous, expensive, majorly polluting with its massive radiation waste by product... all minuses , and regardless we have the technology to manage this... 1) It' still cost more by many factors, 2) More danger equals more risk... is just to say the probability of a major accident (like the kind that cost BILLIONS and poison and kill people and the environment is MORE likely to hapen, it's more a function of time... And yet here we are... the same powers that refuss to build cheaper, safer, more efficient, safer because they are NON pressurized, cheaper because they can be built NON pressurized, Thorium is 200-400 times more available than fissible uranium, the waste is about 95% less, because it burns 100 times more efficiently, and it CAN'T EVER melt down, because of the mechanical physics of how it operates... Yeah these parasites want to use uranium, shunt thorium and got everyone spending BILLIONS on wind and solar.... what does that tell you? Because this video just proved to me... there is no way they CAN'T NOT build a LFTR... for Christ's sake they had an up and running unit in the mid 60s in Oak Ridge National Laboratory, worked PERFECTLY, BETTER than expected... It was shut down and the documentation was ALMOST 'disappeared'... but for one man an engineer... Captain Kirk... '; p

Thank you for giving me an introduction in this technology as I work for Inverters in the automotive industry. This really was a useful introduction to something everybody speaks of, but nobody dares to really explain

Request to create an article on "electronic packaging"

What is a SiC motor? (For EVs)

As a college undergrad in 1991 I worked in a university (University of Florida) research lab doing preparation and characterization of Silicon Carbide deposited layers onto various materials. Our method was chemical vapor deposition whereby a graphite holder inside of a quartz tube surround by outside copper coils with cooling water running through them would be subjected to an A/C current. As the magnetic fields changed polarity many times per second the graphite crystal layers would react to the changing magnetic fields and thereby induce heating through the friction associated with the graphite layers "rubbing" against each other. It was so long ago now I don't remember the exact temperature but I do remember the graphite would begin to glow after a short while. The substrate (Alumina if I recall) we planned to deposit the SiC on was placed on the graphite holder during assembly and consequently would also get heated to exceedingly high temps. Once the entire assembly was up to temp I would inject into the reactor a steady flow of Hydrogen (H2) gas bubbled through a silicon tetrachloride solution. The SiCl4 would diffuse into the hydrogen and be transported into the reaction chamber and them a constant stream of methane (CH4) gas was used as the source for carbon in the experiment. The high heat energies would rip apart the molecules and you would then have a gaseous phase of carbon, silicon, chlorine and other elements above the substrate. Some fraction of these materials would react to form Silicon-Carbide (SiC) that gets deposited onto the substrate. The whole purpose of the experiments were to characterize the regime under which you maximized SiC production and minimized other undesired reactions. For that we would have to take the samples to the materials science department on campus where we could use their SEM to check the deposited layers for purity. All of this work went on for years and formed the basis of a PhD thesis for a graduate student I was working with. It was also funded by DARPA principally as a means to identify coatings that could be used in tank engine components to protect them from wear and corrosion. Never did I imagine there would be a use for this material as a semiconductor. Although I have to say it makes sense because the professor who was the PI for all these research projects was a specialist in semiconductor materials.

I would approach making pure SiC crystals by placing a liquid cooled rod in a chamber containing a SiC "melt" in gaseous form.

history

Thanks. great vid.

Great video! I want to see more SiC stories

SiC mosfets are unique in that they can function at high temperatures, high voltages, and in high gamma radiation fields. ❤

Isn‘t synthetic diamond the hardest synthetic material?

You forgot one big thing. Heat radiates with the 4th power, so a chip that can get twice as hot, can radiate 16× the power.
150V vs 900V is a 6× increase. Which means a 1300× fold increase in heat dissipation, but power rises with the square, for a net of H_dis = V²

❤❤

You had me right up to the horribly misshapen hand draw sine wave. A few minutes with Excel can give you a beautiful sine wave. What you made is just nasty. Outta here…

I am waiting till they add quartz. They can name them IGBTQ+

i really like rock

Hey Asianometry, just wanted to give a quick thank you for your videos. As a new salesperson to the semiconductor industry, these videos are extremely helpful on providing info about the semiconductor industry as a whole, as well as explaining the different technologies/processes involved. Thanks again and keep it up!

what was the video where john shows off his 65w charger? i thought it was this video

"...and let it burrrrrn." lol

Do GaN

Amazing video, it was better to support the references

You should have talked about Fermi Level created by N & P impurity.

I did Beta testing for first GaN motorola & SiC Infinieon Diode.
The very first time I reported the failure because of very high Reverse dV/dt.
Infinieon fix it with introducing little Wells.

The major Advantage of SiC is, Qrr, Body Diode Reverse Recovery charge.
This parameter is major inefficiency problen & EMI & Peak power dissipation .

Using these guys in RF power amplifiers. The available frequency bandwidths are a bit lower than GaN amplifiers at the moment, but have incredible linear and saturation power ratings.