As a material scientist, you did a great job at explaining perovskites structure

Like every week, it's my highlight to watch Dave's well researched 'lectures'. Amazing work like always. Thanks Dave for sharing this with us!

@eddiehourani7160

3 жыл бұрын

Stefan Radtke indeed

@JustHaveaThink

3 жыл бұрын

Hi Stefan. Thanks for your feedback. Glad you like them! :-)

@gameresearch9535

3 жыл бұрын

Here is some more information on Advanced Solar Panels technology. Go to my channel, right click on it and then open it in a new tab. Find the steps on the home page of my channel, use those steps, step 1 and 2. Once you find my other channel using the steps, find a playlist called "Advanced Solar Panels technology". Watch all videos from top to bottom in that order, and then "after" that, check out all the articles, info and links in the playlist description. Checkout the Graphene Flagship roadmap in the playlist description. This shows early 2020s "Advanced Photovoltaics", "Flexible Perovskite solar cells". Later 2020s shows "Perovskite Multijunction Photovoltaics". All with Graphene. Keep in mind that there is corruption here when they mix materials like that, I feel that Graphene should be used, not the other materials. Graphene Spintronics and Graphene Twistronics is amazing. Also we could have some technologies much sooner, the companies tell you when to have them, with their 5 - 10 year plan per emerging technology, Quantum Technology. The companies do have the labs working for them, how do you think they make their products. Look at where one form of the corruption is at, and who controls when we get to see such amazing new emerging technologies. I would give links, but my comment was hidden, so I'm showing you how to find the info without links. Please be respectful and follow the steps given in the info from my channel's home page and under the "About" tab on my channel, use a Desktop PC and you will see why.

@DylanBegazo

3 жыл бұрын

Just Have a Think It seems having multiple absorbers with different band gaps like a triple junction perovskite cell with silicone and some other material to absorb the remaining unabsorbed wavelengths is the best most ideal way to go. Thank you for inspiring me. I want to run for Republican US President in 2028. You’ve inspired me that we can become a green environmentally friendly carbon negative nation. That is my passion. Stay safe. I’ll need your help as an advisor when I’m in office.

@vivekdantkale

3 жыл бұрын

Dear Sir, 2 months back I read an article on 6-layer solar cells, with an efficiency as high as 47% . I was so happy that, from India I wrote a mail to the co-innovator to produce it in India. I think it was done at some gov lab in US.

Thanks for producing these videos. I particularly like the calm no-nonsense delivery you use, which helps me concentrate on the subject matter! Cheers from Australia. 😎

Great video - this is a topic that needs more exposure. I do want to comment on a few things, though. Firstly, you have a couple of mistakes in your explanation: 4:12 - the band gap is the energy an electron needs to become free. The video says that it's related to the layer thickness, which is incorrect. An exact explanation would need band theory that is outside the scope of this comment but, effectively, it's the (minimum) energy an electrons needs to be knocked free by a photon. Silicon's bandgap of 1.12eV means a photon has to be at least almost-red infrared to knock an electron free 4:26 - adding boron makes the silicon *more* conductive. Holes - those 'effective positive charges' - act like, well, free positive charges. The boron basically sucks electrons away from the silicon, leaving excess holes and making the layer more conductive Secondly, some technical comments: - I'm still sceptical about degradation of perovskites. I've been hearing 'no, really, our material is totally stable guys' at conferences for years, and I'll believe it when I see it (on the shelves, in mass-production) 7:48 - Like you say, the lead content probably isn't an issue. Another solar cell technology, cadmium telluride, has cadmium in it (cadmium is a sister element to mercury and is very toxic) but it doesn't matter because it's bound up in the solid crystal structure. Lead-containing perovskites are presumably similar and, like you say, tin might be a viable substitute 9:13 - be sceptical about reports of efficiency/performance from the laboratory. Researchers only need to get one, or a small number of specimens working to publish their findings, whereas industrial production needs thousands or millions of units to achieve that performance 9:49 - Tandem solar cells are hard to make and expensive (existing triple-junction cells are only really used on satellites, where cost is much less important than power). For one, your materials need to have the same atomic spacing (lattice constant), otherwise nasty defects will form at the interface. Then, you need to be able to engineer a tunnel junction between the cells, pushing free electrons from one material into holes in the other, without changing their energy level. It's harder than it sounds, and needs excellent control of the doping. Perovskites can vary the atoms in their crystal structure, allowing you to tune in on the lattice constant and bandgap you want, but the mix you want isn't always stable and easy to work with I would love for perovskite solar cells to be successful. All-perovskite cells would be cheaper than silicon and tandem cells could achieve some impressive efficiencies. But I'm worried people might be being overly optimistic, particularly about stability and degradation, and I'll only really believe perovskites are going to break out once they've actually achieved substantial adoption. Disclaimer: I am a postdoctoral researcher at the University of Warwick, working on silicon carbide materials for power transistors

@mskiptr

3 жыл бұрын

Finally! I was looking specifically for your second point, but the rest is also extremely interesting. Let's take this comment to the very top.

@oldoneeye7516

3 жыл бұрын

Thank you for you insight

@JustHaveaThink

3 жыл бұрын

Hi there. Thanks for sharing this extra technical clarification. Much appreciated. My only point would be that I think I said the thickness was a function of the need to allow more space for phonon interaction with silicon atoms in the middle layer, not anything to do with bandgap width (which I had to represent visually in a scientifically incorrect way just to get the idea across to the viewer)

@c-djinni

3 жыл бұрын

​@@JustHaveaThink In my honest opinion, I think the confusion stems mainly from label at 4:14

@Draxynnic

3 жыл бұрын

I was wondering about the stability myself. I recall talking to someone in the field a couple of years ago (I've worked on perovskites myself, but I was working on a multiferroic perovskite rather than a photoelectric perovskite), and they were commenting on how teams working on photoelectric perovskites liked to boast about their efficiencies while downplaying that they were only maintaining those efficiencies for a matter of seconds. One can hope that there's been improvement, but commercial use of photoelectic perovskites might end up picking up similar memes to fusion power (namely, the "It's X years away, and it will ALWAYS be X years away" meme).

For my study chemical engineering, I needed to do a part on the perovskite solar cells and it makes me very happy that it was so incredibly similar to the content of this video! :)

No ads + great content = instant subscribe.

A week ago in Wroclaw (Poland) opened first in the world factory of perovskite solar panels. Olga Malinkiewicz, company's CTO been working on Inkjet printed technology for last few years, and opened the Saule company in 2014. Now they are going full in by comercializing the tech big time.

@HABLA_GUIRRRI

2 жыл бұрын

v interesting ..

WOW! I'm quite excited to discover your channel. Specifically, the perovskite solar-cell discussion was most interesting. I'm honored to be your newest subscriber.

I did a presentation in 2010 on how multi junction solar cells using multiple semi-conductors (like perovskite) could be used to achieve something like 50% efficiency and get that up to 70% if it were combined with a heat and power system giving us a pretty much everlasting maximum on the efficiency of solar power at about 70%. This was a semester long research project where I did a review of the entire field which at the time was pretty complicated and I wrote a meta-analysis on the annotated research. I got the cockeye from my professor like I was wrong and not one but multiple students interrupted my presentation to say solar couldn't possibility ever go past 32%. It's kinda funny how a student who applies to the scientific method can make accurate conclusions a decade ahead of time. It's a reassuring thought. On the other hand all of that was diminished by the "but actually!" peanut gallery.

@raghunandan5125

3 жыл бұрын

Oh, I would love to read your paper... could you be so kind as to provide a link? thanks in advance

@635574

3 жыл бұрын

So the problem is people dont do the meta analysis and put everything together, I mean why else isnt elon pushing perovskite cells to production? Nobody can scale tech faster.

@robertvesetas8751

3 жыл бұрын

I understand that multi layer multi band gap cells can achieve high efficiency but at much higher cost. However that they have benefit when used in a solar concentrator as fewer cells are used.

@suokkos

3 жыл бұрын

@@robertvesetas8751 , Satellites would have huge cost savings if you can reduce weight with higher efficiency panels. That makes me think there should be market for high efficiency panels even if in a low quantity demand. This could lead improvements which can lead to cost effective mass production for the new technology.

@Vulcano7965

3 жыл бұрын

@@suokkos satellites need specialized solar panels tho. Those are usually GaAs based and need to withstand higher than usual radioation damage to last years or decades.

I love this kind of thing especially when narrated so well. I'd love to get a whole CD and play it at bedtime so I can get some quality sleep.

This channel is by far my favourite on youtube. Provides a great, clear intro to all the hottest technology-related topics in energy.

Have been following developments in perovskite solar loosely but this really helped me understand a bit of the scientific rationale as well as it’s implications so thank you for illuminating this exciting advancement

The unassuming (dry) humour is why a love this channel.

"Which is of course...not correct." Love it!!

3 жыл бұрын

If it's not throwing random u's in words, it's throwing in random i's. Oh, Britain. You scoundrels, you.

@IIISWILIII

3 жыл бұрын

As a Yank, I felt personally attacked! XD

@38josue91

3 жыл бұрын

I guess "cat-ion" is correct then...

@martinnolan4800

3 жыл бұрын

@@IIISWILIII Don’t be too upset. Most English people “speak American” nowadays.

@phil20_20

3 жыл бұрын

There's no "I" in Team America!

I appreciated your description as always.

Biden administration announced yesterday a big investment in perovskite. Your vid helps me to understand what might be achieved by perovskite. Now I have yet another technology to support and wish for. So thanks for a great vid: 1) enough technical chops to actually explain 2) as concise as possible for a complex subject 3) explaining what might be accomplished with perovskite 4) who is doing what to make thus so. Making a great vid takes time, effort, and commitment. Thanks for doing!

As always, way informative.

Perovskite solar cells having less of an environmental footprint is fantastic ! Using less material & increasing efficientcy, very excited to hear more about them

@matthewronald3734

3 жыл бұрын

I don't want to ruin the perovskite Party but that solar website claim failed to mention the extreme toxicity to the environment these PV cells pose. It is based on the very chemistry these cells are made of , As they don't just contain metallic Pb but a very poisonous Lead salt, Ionic compounds are by nature are very soluble in water whereas elemental Lead leaching takes a much longer time.

Perovskite! Exciting news! Thanks for sharing in your pleasant, informative style!

As a retired engineer, I always enjoy watching your channel for the latest updates on green energy options. Thanks!

great content. as always. very well done indeed ...

@JustHaveaThink

3 жыл бұрын

Much appreciated!

@AlexandruJalea

3 жыл бұрын

@MrAxlin 3rd that... Is that a thing?

@elrondeldelbar9422

3 жыл бұрын

@@JustHaveaThink thanks for the great content and amazing videos

@electrified3407

2 жыл бұрын

@@AlexandruJalea No, but "me 3" is. (as in "me too")😊

"... which of course is not correct." I'm an American, laughing out loud at that one. Well played!

@midnight8341

3 жыл бұрын

That always reminds me about The Good Place, with the all-knowing judge Gen, ruling over right and wrong the universe. "I could just listen to her all day... Say 'aluminum'!" ... "Aluminium...?" "See?? Love the accent..."

@ronaldgarrison8478

3 жыл бұрын

Element names almost all are too long. Give me something with one syllable. Maybe Chinese is the solution.

@pkuras

3 жыл бұрын

Aluminum.

@lawrence-dol

3 жыл бұрын

@Thomas Chrombly : al-lu-min-i-um. Phonetically, al-oo-min-ee-um. Americans do like to drop that extra "i". ;-)

@RexAlfieLee

3 жыл бұрын

About time someone else said it. I've been correcting Americans for years but they of course tell me I'm wrong until I show them on the elemental chart. But they don't like it. It's I reckon a bit like "hoovering" your carpets, more BS replacing of course vacuuming.

A fabulous episode of Just Have a Think Perovskite and other innovations in energy are really moving fast at an exponential pace. Thank you for the mention of our podcast Inside Ideas. Learned a lot and hope we can do it again next year.

@JustHaveaThink

3 жыл бұрын

Sounds good :-)

Great video as always, like the T-shirt, perovskite really should be the game changer, only ten years on development and it is getting quite close, very hopeful with this material.

one error: "the gap between the layers is called the band gap, and... ' nope. The band gap is not a thickness or a physical gap - it's an energy 'gap' - the amount of energy required to promote an electron from the valence band to the conduction band where it can

@richardwendling4030

3 жыл бұрын

I love you!

@dickhamilton3517

3 жыл бұрын

@@richardwendling4030 and I didn't get to finish that because the tablet's battery gave out. I thought it was lost. So I suppose I love you too for showing me it was still there :-)

@Bhatakti_Hawas

3 жыл бұрын

He knows... He just simplified it

@dickhamilton3517

3 жыл бұрын

@@Bhatakti_Hawas no. I wrote what he said. And he could have said the right description in as few words.

@dickhamilton3517

3 жыл бұрын

@@13thbiosphere it's not measured in microns, it's measured in eV, electron-volts, and he tells you that, correctly, later on in the video

Oil companies around the world are losing their grip on controlling the energy system. In the past few months, 5 major investing firms have pulled out of the Alberta tar sands, billions of $ are being redirected into the alternatives. Fracking in the USA is taking a beating, Saudi is scampering for sales. Alot of offshore oil rigs are sitting idle, Hibernia has shut down for a minimum of 18 months.

@SlabtheKiller89

3 жыл бұрын

And Shell reported 18 billions (euros or dollars, don't remember) of loss

@bknesheim

3 жыл бұрын

@@SlabtheKiller89 and non off it is because of solar in any form.

@bknesheim

3 жыл бұрын

It is not the oil companies that is the main limiter for implementing solar/wind/hydro/other electric genetators as the main energy source. The main problem is that the infrastructure to transport the electricity is not there and when you add in the cost off updating and expanding the distribution network the total cost increase a lot.

@dickhamilton3517

3 жыл бұрын

@@bknesheim home rooftop solar with feed-in uses the infrastructure that's already there (except you need bidirectional metering). The drawback is that the panels are rarely pointed in the optimal direction.

@MarcoNierop

3 жыл бұрын

@@dickhamilton3517 New to be built houses in The Netherlands, and I believe also in the UK and Germany, are now required to have solar installed, new houses' roofs are all pointed in the right direction.

Dave, I loved this episode of Just Have a Think Perovskite looks very promising. I really appreciate the mention of our podcast Inside Ideas. I really enjoyed our discussion.

@JustHaveaThink

3 жыл бұрын

Thanks Marc. I appreciate your feedback. Hopefully speak soon. All the best.

Thank you for explaining all this so well -- I think many people, including, are benefitting.

Looking forward to these panels 😄

@mainerockflour3462

3 жыл бұрын

Don't hold your breath

@AnIceCrasher

3 жыл бұрын

Maybe in 5-10 years 😅

I've been hearing about how perovskites would revolutionize solar panels for a decade now. I'm waiting with bated breath!

This is awesome news. Great job explaining how the efficiency gains are achieved. Very exciting times to be working in the solar industry. 💚✌️

Loving your channel. Fascinating subject matter and so well presented. Keep it going!

@JustHaveaThink

3 жыл бұрын

Thank you! Will do!

Your aluminum comment was hilarious! And yes, I live in America.

Living off grid 19 years still waiting on that darn better battery! Any videos on next generation off grid batteries ready for prime time would be great. Thanks for another informative video, however please clarify on band gap. Way I interpreted you explanation it sounded like a physical gap, which I’m pretty sure it is not.

@VFatalis

3 жыл бұрын

Didn't you realize at this point that the so called "new battery technologies" announced to be breakthrough and just around the corner are just scientists advertisers looking for tycoons to invest in their groundbreaking new shiny stuff ? Pretty much everything you read about it is still in experimental phase...

@dnboro

3 жыл бұрын

redflow.com/applications/residential/ Big, heavy, maybe a little expensive, but might be what you need. Handles full discharge over and over. Generally used by Telco's for backup or off grid cell towers etc because they perform so well.

Now this sounds like a sustainable step forward! Thank you!

Wow a pleasantly surprising update on the readiness of perovskites over cells. Had no idea they were as competitive as they apparently appear in your video.

Just had to throw that dig in about how we pronounce "aluminium" didn't you. Great video as always. Keep it up.

@tjejojyj

3 жыл бұрын

He says “wrong” but where did it come from? From a Brit name Humphrey Davy who knew a thing or two!!Aluminum was second and aluminium was third. aluminum (n.) 1812, coined by English chemist Sir Humphry Davy, from alumina, alumine, name given by French chemists late 18c. to aluminum oxide, from Latin alumen "alum" (see alum). Davy originally called it alumium (1808), then amended this to aluminum, which remains the U.S. word, but British editors in 1812 further amended it to aluminium, the modern preferred British form, to better harmonize with other metallic element names (sodium, potassium, etc.).

@JustHaveaThink

3 жыл бұрын

Just a bit of fun to break up a dry video :-) Hope you don't mind old bean :-)

@simk42

3 жыл бұрын

​@@JustHaveaThink I laughed out loud at that! Thank you! The light-hearted jests are great, keep them coming please! :)

@carsonc1272

3 жыл бұрын

@@tjejojyj Good to know, I've always wondered what the origins of this difference was. Thanks

@KingdomOfDimensions

3 жыл бұрын

@@tjejojyj As a further note, the latin -um suffix does have some precedent in archaic names for some elements e.g. aurum, ferrum, stannum, etc. Also, while the -ium suffix is far more common, -um is still found in molybdenum, tantalum, platinum, and lanthanum.

Every house that is in the sun needs solar panels on it! With about 5kw of solar and 25kwh battery, with ability to send excess power to the grid, keeping the grid, with solar farms where possible, like over highways, and buildings in city's, with homes having enough battery to power the home around 75% through the night, the grid can supply the rest, using hydroelectric generation plants, and for no sun, keep a few natrual gas plants, to catch the slack! Just talking about it , it's the perfect solution! I'm off grid, so you guys do what you want! I'll keep making my own power, I do need about 4 kw more panels, and 20kwh battery, and a week or two without sun will be no problem! With a few other power producing options, like wind turbines, and a micro hydro generator. I should only require 10 kwh more storage, and I'll be set for about 20 days of rain! There isn't just one big solution, it's a lot of tiny solutions! Like at the home and town level, not the city, county or state, we all need to take the energy production into our own hands, I bet things would advance and improve greatly, if things got the boost from everyone wanting the most effiecent panels and batteries, ppl would want just a few panels, MN ot the whole house covered! Or taking their yard. To make power, when 70-80% effiecent panels would take 1/4 the roof, and power the home while charging batteries! Ha-ha just think how it would be if everyone produced atkeastv1/2 if their energy needs, including their transportation !!!

@grekiki

3 жыл бұрын

There likely isn't a solution that will be optimal for all countries at once. At high latitudes(canada?) solar may not be a cheapest option, so nuclear energy should be a cheaper solution, with less enviromental effects.

Very good video, with no nonsence, and no music. And you have good sound also. Keep on 👍 The best from Sweden

Very well explained, and easy to understand. WELL done.

Degradation? This is the problem to be overcome.

@user-oj4xh8cg2l

3 жыл бұрын

yes, pervoskite stability has been an issue for years and years (I worked on piezoelectric properties of some materials about 30 years ago, it was already a well know problem that had been looking for a solution for quite a while)

@robertsousasantos6766

3 жыл бұрын

We are working hard to address this, at the lab I work we are investigating how passivation and surface engineering can slow degradation without decrease the efficiency

@vincentrobinette1507

3 жыл бұрын

At 5 solar hours per day average, 10,000 hours will only last ~5.47 years. OK for an RV, but not practical for a whole house photovoltaic system. Just the labor cost of such frequent replacements, will cost more than the difference in cost of the panels. Right now, I still recommend mono or polycrystalline panels, because you can leave them up for at least a couple of decades or more, before replacement is necessary......For now!

@the_sideshifter

3 жыл бұрын

@@vincentrobinette1507 the 10 000 hours is a very VERY best case scenario, most of those cells go up to 1000 hours, which means just several months. Perovskite is just a hype and all those videos are advertisements designed to get you excited and make you invest your money.

@vincentrobinette1507

3 жыл бұрын

@@the_sideshifter I agree. The only panels I can recommend right now, are monocrystalline or polycrystalline silicon. Such panels will usually keep 80~90% of their rated output after a couple of decades. Yes, they will be more expensive than Perovskite, but, you will get much more energy per dollar invested in the long run. I don't much feel like getting on my roof every 5 years to change out panels, nor, can I afford to hire it done. While the Perovskite cells are fascinating technology, it's got a long way to go, before it's anything more than "hype".

". . . the American's call it Aluminum. Which is wrong." xD That bloody killed me! I'm glad that I'm not the only one.

@robertkirchner7981

3 жыл бұрын

Fortunately for us North Americans, Aluminum conducts just as well as Aluminium.

@ramblerandy2397

3 жыл бұрын

@@robertkirchner7981 There's an interesting history attached to why the USA calls the alloy aluminum, rather than aluminium. Both spellings and pronunciations were in use upto 1925, and then they officially adopted aluminum. But for a fair few years, aluminium was the preferred word.

@richardgould-blueraven

3 жыл бұрын

Too bad we have you out numbered😏

@richardwendling4030

3 жыл бұрын

I am a Yankee Myself, but BBC via PBS had me saying aluminium. Which I was marked wrong in class and proved the correctness of the English version as an option. My teacher loved that!

@JamesSims

3 жыл бұрын

As an American, I will readily admit that we are wrong in our pronunciation - and a lot of other stuff as well. On behalf of my American brothers and sisters, I offer my sincere apologies. I also want to say that “Aluminium” sounds much cooler. I love your presentations. In a cacophonous world of bovine excrement, your voice represents the epitome of rational and informed thinking that is as refreshing as it is vital. Thank you!

The description of how a silicone cell works is very easy to understand when described the way you did. Thanks

@JustHaveaThink

3 жыл бұрын

Thanks you. I did make an error about boron doping though - it actually makes silicon more conductive, not less conductive.

Awesome! Thanks for making a video on this

So, "aluminum" is incorrect? As a native born and lifelong American I must strenuously ... agree. In that vein can you also stick with 100% metric in your narration? Just because successive UK governments have botched conversion to create the current metric muddle is no reason not to stick with the undeniably correct system of measurement without debasing your information with defunct Imperial units. I hasten to add that I am a HUGE fan of your channel and greatly appreciate the yoeman service you perform in educating the public. Truly, Her Royal Majesty should induct you into the OBE! 😇

@gedofgont1006

3 жыл бұрын

I'm English and I quite like the American pronunciation. 'Al-u-min-i-um' is way too many syllables! 🤝

@punditgi

3 жыл бұрын

@@gedofgont1006 Tomato, tomahto, potato, potahto, let's call the whole thing off. Reminds me of that musical song. Live and let live, I guess. 😀

@gedofgont1006

3 жыл бұрын

@@punditgi 🤝

i feel like i could use a positive charge, think i'll try this "doping"

Concise, informative, articulate. Subbed.

Attitude of Gratitude for all you share.

7:29 just a pet peeve - "return on investment" or ROI does not mean when you start to make a profit. It is an expression of how much you are earning as a percentage of your initial investment over a given time, e.g. a 10% ROI annually.

@snapicvs

3 жыл бұрын

You speak the truth! Good point made.

Interesting development. Printable solar panels might open up some DIY applications, and I'm wondering if there is a way to make a "solar collecting" paint; even if it was only a few % points of efficiency, you could easily put it all kinds of places and turn nearly everything into a solar energy collection surface with little effort. Unless we can come up with things like that, I don't think we'll be able to easily turn the corner of solar energy collection at scale.

@marcowen1506

3 жыл бұрын

This has been something that scientist have looked at. I am very skeptical: you need a lot of very precise electrical structure to extract the electricity that your paint is making which means you can't paint your white picket fence and use it to power your microwave. A solar paint would require you to paint it on a pre-manfuctured mesh of some kind in order to collect the current and send it into wires, thus defeating the DIY objective. Solar paints that make hydrogen, now that is a different story...

@EvelynNdenial

3 жыл бұрын

he said the cells could be made flexible, so maybe not paint but solar wallpaper perhaps?

@JustHaveaThink

3 жыл бұрын

Not sure about paint, but there is a parallel development going in with transparent PV cells that are able to just absorb the infrared part of the spectrum. Those panels, while not brilliantly efficient for obvious reasons, could be applied as a film on the outside of every pane of glass in the world. Now that would be something!

Thank you for providing a clear explanation of this topic.

I learn much from your excellent presentations. Thank you.

Sounded so much like Professor Snape! 😆🤦‍♀️😎🧙🏼

100 square miles is an easy comprehensible and enticing number. Increasing efficiency is bonus at this point. The most important problem to solve is storage as you already know too well.

@mrkokolore6187

3 жыл бұрын

Since energy consumption will definitely go up in the future increasing efficiency is a necessity to prevent that 100 square miles from increasing heavily even then this will probably still be the case.

@demultiplexdfunc177

3 жыл бұрын

Mr Kokolore, yes. Jevon’s Paradox states that the more efficient we make use of something the more we use it. It is a never ending battle. Hell, if everyone can live Bill Gates’ lifestyle, I suspect 95% of us will do so, thus energy consumption will always go up. 20, 50, 100 years from society will use more energy than today even if we increase our efficiency by 100% or more. Human wants and aspirations is the the driving force - always have and always will be.

@TheMrCougarful

3 жыл бұрын

The 100 sq miles meme is bogus, if one imagines that being in one place. That is tightly centralized, and exactly the wrong approach. Micro-grids ( and small battery banks) placed all over the place where there is load -- especially places like parking lot charging stations, and residential and retail rooftops -- solve all sorts of problems. Add to that remote management, and you have nearly invisible highly distributed power with no distribution costs. I have a 780 Ah LiFePo battery bank for my off-grid home, and 30 x 330W panels, and this system is virtually maintenance-free and functionally bullet-proof. I manage it from a web site. Every modern home can have that same setup, and suddenly your "grid" infrastructure vanishes.

@jeffcowdrey1578

3 жыл бұрын

IT's not 100 square miles. It's 100 miles squared, which is 10,000 square miles. I was ready to forgive the aluminum slap, too.

@jeffcowdrey1578

3 жыл бұрын

@@demultiplexdfunc177 The redeeming quality of PV is as it becomes cheaper and more efficient, energy production becomes more and more the property of those who are now merely energy consumers. Even now, I can use less than $1000 PV panels, compact enough to carry on a small trailer, to power my electric bicycle plus touring accessories, giving me unlimited freedom of movement. Imagine that.

Brilliant work. Thanks for sharing this.

Thanks again David for yet another great video....!

"Caffeine Improves the Performance and Thermal Stability of Perovskite Solar Cells" Isn't caffeine just the best ❤

@julmaass

3 жыл бұрын

sometimes it's ok to spill you coffee in the cleanroom. you might discover something new!

These sound great so, where are they? We have to start somewhere! 10 years and not a one on market?

@tylerdurden3722

3 жыл бұрын

That's because they don't even come close to lasting 10 years due to degradation.😅

Thank you for this information. I am so glad your videos were pushed to me. I learned something new today about solar power. I can’t wait to share this with my nephew on Thursday. Take care

@JustHaveaThink

3 жыл бұрын

Glad it was helpful!

that podcast sounds super interesting, thanks for pointing us in that direction

There are three names for Aluminum that came from its discoverer, Aluminium, Aluminum, and Alumium. The third one never cought on, but the other two where both used. Also, they are called dialects, so both are valid.

@DANTHETUBEMAN

3 жыл бұрын

He is busy eating a tomaughto

@liamhackett513

3 жыл бұрын

Only pure bastards say alloomiNUM.

Why don't people leverage the effectiveness of solar panels by using them to shade buildings and parking lots in the Sun Belt?

@plo8monster113

3 жыл бұрын

That's a racecar of an idea works frontwards and backwards

@DavidMDensford

3 жыл бұрын

Solar-powered sustainable 55+ communities. Energy-efficient new construction oriented with south-facing roofs, generating 2x or 3x more power than the retired couple inside can use. Put enough homes together and have a microgrid making extra money for the retirees who purchased the shade.

@DavidMDensford

3 жыл бұрын

@LICKHER&STICKHERINTHEPINK &OTHERPLACES But are they printed and glued to a standing seam metal roof with the heat of the sun beating down on them?

@pedro97w

3 жыл бұрын

@LICKHER&STICKHERINTHEPINK &OTHERPLACES Google Earth DFW airport and look at how many square miles of warehouse roofs there are. How much does it cost to air-condition those places?

@RandomGuy-nm6bm

3 жыл бұрын

@LICKHER&STICKHERINTHEPINK &OTHERPLACES oh snap

Excellent video as usual. Sets the standard!

Brilliant presemtation. Thank you for the new data. 😁

One thing that doesn't make sense to me: if a Perovskite cell still requires a conventional silicon layer (eg it's not one technology or the other, it's both), then how does this solve the supply chain limitation? Also presumably using two different materials together could only ever increase embodied GHG footprint (because its adding more highly processed materials to raise the efficiency a modest amount, from say 24% to 28%)?

@joshjones6072

3 жыл бұрын

It's necessary to apples to apples compare the green house footprint of any electricity production system. Hydroelectric dams take a colossal amount of material and energy to make; trucks, concrete, steel. Same for nuclear plants. But I agree that another layer of silicon somewhat defeats the purpose of a sprayable easier to manufacture solar cell. That's how it's manufactured; sprayed onto an electrode surface. In any case, there are so many kinds of this human made mineral, and putting these Porovskite modules all over roofs means there's very little new infrastructure needed to make these distributed power plants. No new concrete buildings or new steel beams. Truck miles might be the same regarding shipping materials and installation, similar to the building of a coal plant in that regard. But the fuel is sunlight which has it's own delivery system.

Interesting.

Nice report. Thanks

Great informative video, fantastic work!

Does anyone get the feeling we should have been talking about things like this a decade or more ago? That everything that could help is going to arrive too late?

@VFatalis

3 жыл бұрын

Yes. You're right, it's too little and way too late. The crash of our industrial civilization can't be avoided.

@Simple_Slmon

3 жыл бұрын

It most certainly is, nearly all the indicters are pointing to something catastrophic. The IPCC report, the most conservative report, says 4 degrees if there is no carbon capture (which there isnt) and many other scientific reports are pointing to over 4 degs, which will probably bring the current civilisation to an end (obviously not the end of humans) and if that doesnt then the soil degradation means there is approximately only 60ish harvests left with sea level rise then that would end civilisation and if that doesnt then plummeting insect populations will probably bring the collapse of the entire ecosystem. And remember 4 degrees by 2100 means locked in 8 degrees rise by 2200, this would be the end of all humans and probably all large mammals.

@Simple_Slmon

3 жыл бұрын

Hi @IamtheFleecer There is no blind panic you made that up. The models are not questionable (you made that up also), even the early models have been fairly accurate but under played the warming as they were missing the feedback loops and have been updated and have shown to be very accurate following the warming curve closely. No one thinks it is the end of the world (you made that up) so stop making up stuff it makes you look ignorant.

@Simple_Slmon

3 жыл бұрын

@IamtheFleecer where have you got "there will be catastrophic climate change within 10 years" from? anyway isnt panic just a statement, all theories are questionable that is part of science (again you are making stuff up)

@Simple_Slmon

3 жыл бұрын

@IamtheFleecer I said they are accurate I never said they are not questionable (another blatant made up thing from you) you can question it, provide some proof, data etc and there you go.

Slight correction. The speaker talked about Elon Musk's 100 sq miles of solar panels. In fact he says 100 miles square, or 10,000 square miles. Still a reasonable amount of land.

@waynet8953

3 жыл бұрын

A big difference.

Great video as usual! Thanks.

Great video. Very eye-opening to the surprising lack of challenges from industry, just the social challenges of implementing such a change. People seem to have either forgotten or given up 😑

In the UK we have more wind & waves 24-7 than we do Solar. The way to solve it is to have government subsidize for small scale solar and wind, and create community hubs of 10-50houses all linked together. You wouldnt have to transport the power then. Also tides and wave power.

@grindupBaker

3 жыл бұрын

"community hubs of 10-50houses". Intermittency is a bitch then. Need storage for 96 hours if there's any possibility of no/minimal wind for 96 hours (or whatever it is). Huge storage. North American east grid is from the Arctic Ocean to the Gulf of Mexico. North American west grid is the same size. When did you last hear of calm days & big cloud cover all the way from Arctic Ocean to the Gulf of Mexico ? Not too often. Intermittency needs either a geographically-large grid with its loss of 5.5% / 1,000 km or lots of expensive energy storage.

@DiyEcoProjects

3 жыл бұрын

@@grindupBaker hi there. hmm... im considering your post. Im not saying dont have solar, but its a fact that the UK has more wind. Id build a system around a 7 day window. Each household would have its own storage as part of the installation. What im advocating for here is that these homes are linked together. If you ran out (if that was to happen through too much use) then there may be a possibility to draw from others on the local grid. The localized grid could be as expansive as it needs to be.

@DiyEcoProjects

3 жыл бұрын

@@grindupBaker my favourate are the "eco wave" kzread.info/dash/bejne/lWpnldl-kbHJYZs.html

@kaitlyn__L

3 жыл бұрын

@@DiyEcoProjects what you've described is essentially what often gets called a smart micro grid, in case that helps at all. where houses can pull from their neighbours when their own storage runs low, before having to reach out to the wider grid as a last resort. additionally, each cluster of homes can present itself as if it were a single power station to the wider grid, for instance accessing the next community cluster over the hill, or the next. as far as your end of the system is concerned it just put the power request out to the wider grid but the idea of the smart mesh micro grid is that transmission distance is minimised whenever possible, albeit still capable of going across the entire country when required. to keep transmission losses as low as possible, and to allow better grid storage integration for micro hydro, home solar, etc. a lot of these ideas involve using an electric car as the main home battery whilst having a smaller backup battery in the garage. when your car gets home it can therefore charge from the car across the street, or use everybody's solar panels, or reach out to a grid scale storage or the next town over. most of your house's own usage would be buffered through the battery to allow desynchronization of supply and demand, allowing more flexible generation, waiting an hour until rates get cheaper or the sun is due to come out, and so forth. of course this is all meant to be automated so the end user doesn't have to do anything, and it would seem almost like nothing at all had changed to most people. such systems are also proposed to increase reliability rather than reduce it, as various sections of the grid would be able to safely be disconnected in the event of a power dip or other such issues. since they're designed to manage their own power most of the time anyway, they could handle being disconnected for a few minutes up to an hour or two with no visible effects. suggestions also include thermostats that talk to the smart meter to know when power is cheap, just as the car charger and so on would do, and therefore potentially get information about availability issues - in fact nest thermostats can already do this with some power providers, to turn off or slow down the A/C for a bonus on their bill, to much better manage load balancing on the local grid. there's all sorts of suggestions for water heaters and laundry machines to operate in a similar way. most people would happily wait an extra hour to run the drier if it's meant to be especially windy and the power will be free. i think such systems have potential, especially with the HVDC interconnects and supergrid concepts too. given that the low level distribution of power can be abstracted into a single power node on wider grids, such a system could drastically reduce renewable curtailment over a wide geographic area, whilst also encouraging adoption of micro generation and power harvesting equipment, while enabling the grid to tie it all together much more easily and ensure grid storage is used to its full potential.

Makes me wish I were a rich man who could spend billions in fields such as this..... man.. What 50 billion could find out....🤔

@TauCu

2 жыл бұрын

even 1 bln lol

Thank you for a clear presentation on this exciting potential development.

Thank you for another great video!

Strange that aluminum is spelled aluminum in the USA and apparently spelled different in the UK.

@vincentrobinette1507

3 жыл бұрын

It actually is. it IS spelled alumin(I)um in europe. We don't spell aluminum with the "I" before the "um". The reason is, when the element was first discovered, there were several papers written, with the earliest ones spelling it IUM, the other, aluminUM. That said, Canada and US adopted the latter, the United Kingdom adopted the former. Bottom line, we're BOTH right! If you type either spelling, your word spell checker will not attempt to correct either spelling.

@thewolfdoctor761

3 жыл бұрын

Yes, when it is spelled wrong, it is pronounced wrong.

Prof Snape? I always knew solar tech is part of the Dark Arts. 😀

@rugbyguy59

3 жыл бұрын

10 points to Slytherin. That’s all I kept hearing too.

@shaneg9081

3 жыл бұрын

Well it IS absorbing and transforming light.

You succeed in provoking thought through a scientific approach in your lectures, thank you for your work.

Great video as always. Thank you.

Just one square mile of battery? Now then the question is "how thick?"

@steeevo0136

3 жыл бұрын

Elon has certainly proven himself to be quite thick, but not as thick as his investors. How's that long promised electric truck going Elon ? Still in "development" ?

@axiomatik4312

3 жыл бұрын

Your battery needs to supply 456Gw for 20hours. That's 9.12Twh per day. Divide by best lithium battery 250wh/kg, you'll need 36 million metric tonnes of batteries about 10m high (30feet)., for one day of storage!, If u want one more day of backup double it and you'll also need extra solar panels to charge those and once topped up the electricity will have no where else to go.

@joshjones6072

3 жыл бұрын

Good point. I think ^ it was resolved at 10m high, which is a lot of batteries. Why not just make a tremendous amount of tall water towers, pump the water up during the day, turn a turbine at night. Sure, there are losses, but batteries have losses too. And batteries don't last as long as water towers.

@matthorrocks6517

3 жыл бұрын

@@joshjones6072 why not just shoot a lazer at a mirror on the moon and then have it bounce down off the arctic then to a satalite that shoots it around the suns orbit cuz i assume sun can bend lzrs back to earth into elon musks solar powered ear buds playing nirvana.

@matthorrocks6517

3 жыл бұрын

@@joshjones6072 shit i forgot what we were talking about mid post of my comment now i sound like an idiot.

I can't wait till I only need to mount 4 panels on my client's roof and it'll be enough to go off-grid

@enterprisestobart

3 жыл бұрын

Although it would be better to mount 6 panels and get the goverment to pay you money to produce electricity.

@xyzsame4081

3 жыл бұрын

@@enterprisestobart The German government already limits the installations. Only subsidies for SMALL installations on homes and making people pay TWICE (taxes) on the solar energy they harvest 1) when they harvest it (all, even when they use it themselves) and 2) when they sell to the grid. Only older installations and very small (= non threatening for the established players) are excempt from the double tax That also hits medium sized commercial users ! (who do not get any subsidies, there are scenarios where they would be profitable if they do not need a lot af electricity during night). Meanwhile they are actively kept form installing more solar power even if they mostly would use it themselves. Neighbours organizing in a co-op or NGO, a landlord selling to tenants, a company using their own roofs for a BIG installation ? Nope ! there are prohibitive regulations and costs. One would be classified as energy provider and those are normally large businesses and a lot of hassle and costs comes with it. To be fair I do not know if it is illegal to be off the grid and in that case one _might_ escape being fleeced in order to protect the big providers from competition. Maybe neighbours could gift extra current to their neighbours (or they just install a line if they are good in DIY).

Great cast, thank you

Amazing videos. Keep up the good work!

4:46 'Unless you live in America, which of course is not correct". Lol that gave me a good laugh

@bigwheelsturning

3 жыл бұрын

Potato, Patato

The nine thumbs down during the time of my comment are from big oil

@JustHaveaThink

3 жыл бұрын

Haha. Bless 'em :-)

@peteroneill2991

3 жыл бұрын

Koch brothers hold my beer and another 15 trolls enter the scene.

@VFatalis

3 жыл бұрын

Actually, they come from people who are *not* deluding themselvses with hopium...

@peteroneill2991

3 жыл бұрын

NO 16

Well done Dave!

Excellent informative explanation... thanks very much!

"Old and failing grid"? I work for an electric utility... we spend tens of millions of dollars every year updating the grid to make sure that it ISN'T old and failing... Generally speaking, we replace things after 40 years. That's well before they can start to fail.

@mainerockflour3462

3 жыл бұрын

Central Maine Power has recently beefed up their high-tension lines in the much anticipated EMP event.

@gearandalthefirst7027

3 жыл бұрын

Must be nice living somewhere that isn't at the mercy of PG&E's bullshit. Or inTexas...

@Xero1of1

3 жыл бұрын

@@gearandalthefirst7027 Utilities are monopolies and therefore subject to the rules of the government... so if you're unhappy with the state of your power and gas provider, look to the government.

I would like to start a go fund me on a gym that puts energy into the grid .

Thank you for a most informative video, superbly presented.

Great explanation!! Thank you!

It’s funny to see, that the interviewer doesn’t fathom what Elon Musk are saying, he just try to look like he understands....😆😂🤣

@julesgardet659

3 жыл бұрын

Dinosaur mentality...

@MrApplehair

3 жыл бұрын

as if Elon Mustard is saying something smart

Prediction: it will be a graphene perovskite of some kind that finally breaks 50% efficiency.

@KAIZORIANEMPIRE

3 жыл бұрын

Efficiency here isn't the issue. It's stability. These cells literally react when light shines in them lol so it's not going to become comertial anytime soon they're sensitive to water or even humidy as well

@vincentrobinette1507

3 жыл бұрын

@@KAIZORIANEMPIRE You can protect the cells from those environmental conditions pretty easily. The REAL enemy is ultraviolet radiation. That's the part of the spectrum that causes the photochemical reaction you describe.

@KAIZORIANEMPIRE

3 жыл бұрын

@@vincentrobinette1507 no you can't. I work on these materials. The problem is they're highly reactive and unstable. The lead leaches out. The main issue with these cells is their stability. There are no cases of more than a year yet and functional efficiency. In space it may be better but so far this is the biggest draw back for them

@vincentrobinette1507

3 жыл бұрын

@@KAIZORIANEMPIRE One thing I didn't think of, is oxidation. I wonder if corrosion is another factor. Just like painting a car, it protects the metal from oxidation, for a while. It eventually creeps in over time, otherwise, cars wouldn't rust. I don't know how corrosion resistant these cells are, and it also depends on the chemistry. Lead will indeed, oxidize. containing the lead can't be too much more difficult, than containing the lead in a AGM battery. (which also have a very limited service life)

@KAIZORIANEMPIRE

3 жыл бұрын

@@vincentrobinette1507 yes corrosion is one big problem. The lead corrodes into the material and yeah oxygen is a big problem and even light. Light activates some molecules and make them corrode . Again they're great for efficiency but stability is good yet. The most stable ones have carbon nanotubes and they try to put layers of molecules that are more inert to protect them. Of we make them stable we literally have a great answer to power

Thank you very very much. So informative.

Excellent explanations. Awesome.thanks.

"which is of course.... not correct" Well.... 'aluminum' was the original term. Y'all renamed it 'aluminium'.

@JustHaveaThink

3 жыл бұрын

:-) which is why that pronunciation is now correct ;-) LOL (BTW, it was a joke)

@lawrence-dol

3 жыл бұрын

Or did Americans rename aluminium to aluminum?

The Aluminium comment, HAHAHAHAHAHAHAHAHAHA

Totally informative! Thanks 🙏

Thank you for this video