Solar 4.0: Ultra Efficient Solar Panel Breakthrough

Ғылым және технология

Perovskite solar cells are set to revolutionize how we generate energy from sunlight, but a recent breakthrough may increase their efficiency by 250% accelerating our route to clean energy by decades.
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0:00 Perovskite Solar Panel Efficiency Breakthrough
0:34 What are Perovskite Solar Cells?
3:41 Perovskite Solar Cell Breakthrough
8:39 Solar Power 4.0
#solar #perovskite #breakthrough
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Пікірлер: 997

  • @startingwithaletter
    @startingwithaletter Жыл бұрын

    I wish this video had 250% more information about the absolute efficiency of the cells.

  • @Aridzonan13

    @Aridzonan13

    Жыл бұрын

    I'd love to know if they've been tested in a Desert environment? Let's say 115F? I don't get excited about any new Solar Tech unless it's run flawlessly for 5 years in a serious Desert.. The major failure w/ HCPV (Hight Concentrated PV) was the cells could not handle the heat. This included cells w/ heat pipes (passive cooling), etc. The cells would deform and then separate. Some of the advanced HCPV cells were multi-junciton / full spectrum too.

  • @yousausage

    @yousausage

    Жыл бұрын

    Basically above 20% absolute efficiency is impossible for a solar cell.

  • @bellissimo4520

    @bellissimo4520

    Жыл бұрын

    @@yousausage Perovskite solar cells already are higher than that (about 24% current record). I honestly don't believe at all that this will now be increased by 250% or anything close to that, but why shouldn't further increases not be possible? Perovskite cells started out with about 3% (2009), and have made quite a lot of progress in the last 14 years.

  • @conorstewart2214

    @conorstewart2214

    Жыл бұрын

    @@yousausage except it isn’t. Why do you think it is?

  • @farleftsilencelikenazis1021

    @farleftsilencelikenazis1021

    Жыл бұрын

    it doesn't matter. The entire topic of solar and wind replacing what we use now is a pipe dream. "Net 0" is an insane ideological point based on a detraction from reality, science and even IF we needed to cut CO2 (we don't) what they want is flat out IMPOSSIBLE. To mine the materials needed to phase out and produce just ONE generation technology units (wind solar and a battery storage farms) we need (based on 2019 mining and discoveries- 400 years to mine nickel 9920 years for Lithium 1733 for Cobalt 3287 for Graphite (natural flake) Silicon 5,9 years Vanadium 7101 years For Rare Earth Metals Neodymium 40 years Germanium 29113 years Lanthanum 166,8 years Praseodymium 31,4 years Dysprosium 193,2 year Terbium 59,9 years. That's based on assuming we can produce at 2019 levels when we only have global reserves of 2,33% Lithium 3,48% cobalt 3,57% graphite 3,52% Vanadium Plus IF we discover more of this stuff, for every 1000 deposits discovered only 1 or 2 become mines. It currently takes 20 years from discovery to mining. For every 10 producing mines, 2 or 3 will loose money and shut down. These ideas a re great! Fossil fuel will have to be replaced at some point but your audience needs to be away these are pipe dreams. Our politicians are on another planet mentally driven by climate hysteria.

  • @altosack
    @altosack Жыл бұрын

    Please don’t use phrases like “an increase by a factor of 250%”. A factor is a simple multiple, such as 3.5. Every time someone uses a percentage greater than 100% as an increase, it’s always ambiguous what they mean (is 250% 2.5 or 3.5?), because too many that use it are innumerate and want to impress with big numbers.

  • @mpirokajosephmgcokoca2355

    @mpirokajosephmgcokoca2355

    Ай бұрын

    Was confused also 😔

  • @condruzmarius

    @condruzmarius

    27 күн бұрын

    250% means 1.5 increase

  • @altosack

    @altosack

    27 күн бұрын

    @@condruzmarius - A factor of 1.5 is a 50% increase; a 250% increase is a factor of 3.5. By example, if one normally eats 2000 cal/day, and increases it to 3000, that is a 50% increase and a factor of 1.5, which is the original (1.0) plus the factor of increase (0.5). If one were to increase it to 7000, that would be an increase of 5000 cal, or 250% of 2000, and a total factor of 3.5. The ambiguous part is one could say the increase (5000) is a factor of 2.5, which correlates to the percentage increase (250%). Usually, if we say “increased by a factor of …”, it’s the total divided by the original, not the increase divided by the original.

  • @jimmurphy5355
    @jimmurphy5355 Жыл бұрын

    So, 250% better. That’s great, unless the efficiency of their tested cell went from 1% to 2.5% Since they didn’t crow about the absolute efficiency, only the change, I’m going to assume their cell was pretty bad, and they didn’t want to mention how bad.

  • @andreycham4797

    @andreycham4797

    Жыл бұрын

    Ha ha ha they never tell you how good they really are but give us more money for continuing a research

  • @DavidD03820

    @DavidD03820

    Жыл бұрын

    Finally someone that actually listened and everyone glazed over! I never got the number of how many watts per square meter or anything this magic substance generates. Exactly what you said, 250% then what? what number is it better then, because 250% of 1 watt is 2.5w.. or 2500% of 0.1w is still 2.5w.

  • @mistermood4164

    @mistermood4164

    Жыл бұрын

    I believe the industry average is 17-19% efficiency

  • @DavidD03820

    @DavidD03820

    Жыл бұрын

    @@mistermood4164 industry average of solar cells are 17-19% efficiency, they never once talked about perovskite cells.

  • @DavidD03820

    @DavidD03820

    Жыл бұрын

    They talked about perovskite cells making 250% better then the last time. 250% better then WHAT? because 250% better of 0 is still 0. They never gave a number....

  • @michaelharrison1093
    @michaelharrison1093 Жыл бұрын

    It would be great to know what their base efficiency assumption was. I understand that some perovskite PV cells are only achieving around 8% efficiency so a 250% improvement on top of this will only bring perovskite cells in line with commercially available Si cells.

  • @mrspeigle1

    @mrspeigle1

    Жыл бұрын

    That's the thing, it dosent have to beat silicon cells in efficiency if it can beat them in price.

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    45-50% double junction

  • @XxXDOMINIONXxX

    @XxXDOMINIONXxX

    Жыл бұрын

    @@mrspeigle1 if you think these cells will be "magically cheaper" they won't be.

  • @powmod

    @powmod

    Жыл бұрын

    @@mrspeigle1 Pure perovskite cells are actually cheaper since they use an easier and less energy intensive building process (printing) and low cost materials (lead). But if you are printing multiple layers of different materials with silver between them, I don't think it will be cheaper.

  • @mrspeigle1

    @mrspeigle1

    Жыл бұрын

    @poWMod stuff for the bean counters to figure out, cheaper is the main promise of perovskyte Materials and manufacturing techniques might push it over the top but don't forget that silicon cells wich hit those efficiency numbers have thier own cost and complexity adds. Figuring out what it will be at scale is the question 🤔

  • @lucidmoses
    @lucidmoses Жыл бұрын

    I appreciate the honesty. I'm sure some youtube channels are already taking orders for this stuff.

  • @getinthespace7715
    @getinthespace7715 Жыл бұрын

    Great in depth explanations. I can tell this is going to be one of my favorite new channels.

  • @ahnilatedahnilated7703
    @ahnilatedahnilated7703 Жыл бұрын

    The degradation has been a major blocking point. If they can't solve this, then it doesn't matter how efficient they are or cheap.

  • @TTM1895

    @TTM1895

    Жыл бұрын

    Everything degrades over time. No exception. Considering what the materials are made from and how much heat is placed upon them on a daily basis, the degradation problem isn't going to be solved anytime soon.

  • @apollobukowski4275

    @apollobukowski4275

    Жыл бұрын

    You could say the same about roads

  • @xolomartinez6036

    @xolomartinez6036

    Жыл бұрын

    Self healing materials

  • @flamingo5900

    @flamingo5900

    Жыл бұрын

    Degradation of 20% over 25 years is not bad. If it could be avoided then great.

  • @heroclix0rz

    @heroclix0rz

    Жыл бұрын

    If the cost is low enough then it could be worth it. It's just that "cost" includes all the effort to replace degraded parts.

  • @jedics1
    @jedics1 Жыл бұрын

    As someone who gets 90% of their power from a small 2kw solar/9kw LFP system, much higher efficiency and lighter solar would allow me to go 100% throughout winter. It might also allow me to charge a small Ev so I don't have to burn stuff ever again... Seeing they have yet to solve Perovskite's durability its still 5 and probably 10 years away before I get to buy it though. Lets hope Ai starts doing some heavy lifting to move things along a bit faster.

  • @Sasoon2006

    @Sasoon2006

    Жыл бұрын

    Why don’t you add few more panels to get to 100%?

  • @nightmareinaction629

    @nightmareinaction629

    Жыл бұрын

    What solar panels are you using. You can already buy bi facial panels with cells of afficiency of 24%

  • @leonlowenstadter9223

    @leonlowenstadter9223

    Жыл бұрын

    If this is solved in 5 to 10 years, it would be a great success as the world turns towards renewable energies.

  • @yourlogicalnightmare1014

    @yourlogicalnightmare1014

    Жыл бұрын

    AI doesn't create knowledge. It only re-arranges and re-presents existing knowledge

  • @cdunne1620

    @cdunne1620

    Жыл бұрын

    @@yourlogicalnightmare1014 ..I would omit the word ‘just’ my friend. We know enough physics and science now to change the world so a bit of re-arranging would do just fine!

  • @ryuuguu01
    @ryuuguu01 Жыл бұрын

    I am glad you mentioned the lead in these. I almost never see it mentioned that not just is lead in them but it is in a water-soluble form.

  • @petertrypsteen

    @petertrypsteen

    Жыл бұрын

    There are also lead-free ones.

  • @ZACH12311

    @ZACH12311

    Жыл бұрын

    There is much more lead in the solder of standard silicon panels than in the perovskite absorber. Lead free solder exists of course but it’s not widely used in the industry. Cheers!

  • @srikengames

    @srikengames

    Жыл бұрын

    @@ZACH12311 almost all products nowadays are produced RoHS compliant. Which means no more then 0.1% of dangerous chemicals like lead.

  • @snappycattimesten
    @snappycattimesten Жыл бұрын

    Can someone smart tell me if this 250% efficiency increase will get solar panels to 50% total efficiency of light energy conversion? Thanks.

  • @Tempestan

    @Tempestan

    Жыл бұрын

    It would be around 63% efficiency. Basing this of 25% x 250% or .25 x 2.5= .625 round up to 63%. That would be the high side.

  • @Northern-Don

    @Northern-Don

    Жыл бұрын

    I love the way you’ve worded your question, I think the same ALL THE TIME - Thanks!

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    It would be about 55-63% efficiency- 2.5x better than current single or double layer perovskite tuned to the same light frequency

  • @JorgetePanete

    @JorgetePanete

    Жыл бұрын

    ​@@Tempestan it says +250%, not 250%

  • @pappaflammyboi5799

    @pappaflammyboi5799

    Жыл бұрын

    @@JorgetePanete Same thing.

  • @WouterZtube
    @WouterZtube Жыл бұрын

    What a fresh breath of air. Someone knowledgeable explaining something very complex in simple terms. Thank you

  • @thomash3537
    @thomash3537 Жыл бұрын

    I just had a look at this publication, it is about photo detectors. The responsivity increase observed there does not at all translate into solar cells or their power conversion efficiency (PCE) although they both use perovskites. State of the art single junction perovskit solar cells have around 25% PCE and operate close to the thermodynamic limit which is around 32% PCE. There will only be incremental improvements. Multi junction devices or maybe singlet fission can get you beyond the thermodynamic single junction limit, but not a reduced recombination rate as seen in the TRPL data in that study.

  • @bladez-if4vw
    @bladez-if4vw Жыл бұрын

    You started off on a daunting path, but you managed to recapture my sense of understanding.

  • @Andrew-rc3vh
    @Andrew-rc3vh Жыл бұрын

    It's good to hear from someone who knows their physics. Well done!

  • @germanjohn5626

    @germanjohn5626

    Жыл бұрын

    He doesn't, there is no solar cell on the market that is 100% efficient in that it converts all of the suns radiation hitting it into power.. Not even 50. His 250% efficiency is pseudo science and B.S. in order to bamboozle the community.

  • @neyhmor
    @neyhmor Жыл бұрын

    This "mirror " on the backside has been used in Si cells for decades now. It is called back scattering field (BSF). Although in Si the effect might be quite different (light reflecting + defect passivation) it also has increased the efficiency of Si cells a lot.

  • @harleyme3163

    @harleyme3163

    Жыл бұрын

    just looked it up... current available to buy panels now are around 20% effecient so theyre fulla shit

  • @Kevin_Street
    @Kevin_Street Жыл бұрын

    Thank you for this video! You explain a complicated subject really well.

  • @rayoflight62
    @rayoflight62 Жыл бұрын

    The layer subject to cracking in a perovskite cell is the thin deposit of Indium Tin Oxide, the same material which is electrically conductive and transparent and it is used in all smartphone displays to construct the capacitive matrix able to feel where the finger touches the screen. After awhile the ITO layer cracks and the perovskite cell be ame useless. Anyway, it is not only the ITO layer to be a problem. There are a dozen of concurrent problems which need to be solved before a perovskite solar cell can leave the experiment laboratory and enter the manufacturing facility. This is the meaning when you ear that a technology is "in its infancy". The silver layer below the recombination area is a genius idea. A mirror spatial disposition of charges discourages the recombination? Wow. Does it work below the Base-Emitter junction of a bipolar transistor? The best we can achieve today if an Hfe of 500; can we get to 5000 with a mirror below the junction? This is truly big, it's relevant to many applications, not only the solar cells. I'm a bit skeptical because I see a roadblock with the junction potential barrier; does it stay the same with the mirror installed? I'm sure the solid state physicists are all closed in their labs doing many measurements, and sooner or later a preprint will popup - with a confirmation, or with the proof of a σςαμ. Thank you Dr. Miles for the video. It a very interesting theory of the mirror, albeit i find hard to match the electric forces with the distance and the angles. Greetings, Anthony

  • @oldconspiracydude236

    @oldconspiracydude236

    Жыл бұрын

    solar cell that you replace every two years could still be cost effective

  • @diatonicdelirium1743

    @diatonicdelirium1743

    Жыл бұрын

    @@oldconspiracydude236 ... if sufficiently accessible and properly recyclable, otherwise it is a wasteful pain in the behind.

  • @CaptainRon1913

    @CaptainRon1913

    Жыл бұрын

    For a number of years now, work has been proceeding in order to bring perfection to the crudely conceived idea of a transmission that would not only supply inverse reactive current for use in unilateral phase detractors, but would also be capable of automatically synchronizing cardinal grammeters. Now basically the only new principle involved is that instead of power being generated by the relative motion of conductors and fluxes, it is produced by the modial interaction of magneto-reluctance and capacitive diractance. The original machine had a base plate of pre-famulated amulite surmounted by a malleable logarithmic casing in such a way that the two spurving bearings were in a direct line with the panametric fan. The latter consisted simply of six hydrocoptic marzlevanes, so fitted to the ambifacient lunar waneshaft that side fumbling was effectively prevented. The main winding was of the normal lotus-o-delta type placed in panendermic semi-boloid slots of the stator, every seventh conductor being connected by a non-reversible tremie pipe to the differential girdle spring on the “up” end of the grammeters. The turbo-encabulator has now reached a high level of development, and it’s being successfully used in the operation of novertrunnions. Moreover, whenever a forescent skor motion is required, it may also be employed in conjunction with a drawn reciprocation dingle arm, to reduce sinusoidal repleneration

  • @mnomadvfx

    @mnomadvfx

    Жыл бұрын

    I understood some of those words 😅 Seriously though I thought that they had gotten much further along with PRVSKT solar endurance than this over a year ago. Depressing 😞

  • @mnomadvfx

    @mnomadvfx

    Жыл бұрын

    @@oldconspiracydude236 If it is cheap enough yes, but the problem is that you would be hiring someone to go up and replace it every 2 years also unless you could access it from inside the house or from a tiered roof balcony.

  • @dugandav1
    @dugandav110 ай бұрын

    Great to hear about all these potential developments but at the end of the day, what the consumer/installer wants to see is a higher output for a smaller footprint that they can fit now!

  • @vermontsownboy6957
    @vermontsownboy6957 Жыл бұрын

    I'm happy to discover this channel! Great content easy to understand! Thank you!

  • @Kysen10
    @Kysen10 Жыл бұрын

    First time viewer and it's a relief that you know what you are talking about. Too many random tech tubers who just parrot other peoples work and add b-roll.

  • @107thFruit
    @107thFruit Жыл бұрын

    I know that perovskite cells can be roughly 1/2 the price of silicon cells, but with the adaptation of not using lead and adding the layer of silver I wonder how expensive they will end up being if this design is universally accepted after further lab testing.

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    No perovskites as a material are 1/10th that of convention Crystalline Silicon. However the casing for all.perovskite panels may be made simpler without a silicon substrate, so they could end up being 50% less expensive.... Possibly more due to the roll to roll capability of perovskite material application.

  • @nilsfrederking62

    @nilsfrederking62

    Жыл бұрын

    Depends on the thickness of the silver plating they indicate 60 nm and it is an alloy, so maximum silver content per square meter would be(less than) roughly 1 gram which is less than a Euro in material cost.

  • @_shadow_1

    @_shadow_1

    Жыл бұрын

    @@nilsfrederking62 We also have to take into account that the silver could be potentially recycled and recovered, thereby further deceasing the total amount of silver used.

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    Maybe dispersed metal atoms on multiple layers could allow for the silver effect. High temp metal could be used as its a substrate not impacting the perovskite layer, however the dispersed atom idea is a little bit complicated in terms or preventing atomic agglomeration for true dispersal

  • @13thbiosphere

    @13thbiosphere

    Жыл бұрын

    @@nilsfrederking62 if the entire Industry converts it it could be * million square metres.... So 1 ton

  • @romanregman1469
    @romanregman1469 Жыл бұрын

    Also: adding a simple mirror to the ground surface, angled to reflect onto the pv panel, it increases efficiency for very little cost. Or get the germanium ones, and add those mirrors, for even better efficiency, with minimal degradation from .... The Fkn Sun they're supposed to be pointed at!

  • @jeremystein4534
    @jeremystein4534 Жыл бұрын

    Excellent video, Dr Miles. Many thanks

  • @katana1960
    @katana1960 Жыл бұрын

    I heard about this years ago. It seems that we are always on the verge of a break through, but never seem to be able to buy them.

  • @MrArcheopteryx
    @MrArcheopteryx Жыл бұрын

    You made my day Doctor Miles! I am so looking forward to 250% higher efficiency in photovoltaics. Just imagine transparent, film-thick perovskite cells applied to buildings, houses, boats, etc. Now that would be a turning point in cheap renewable clean energy, ABUNDANT for everyone. Conversely, those who profit from a dependency on complex energy production and distribution, would probably oppose it, but that's just another day at the office in the life of progress. Beautiful graphical and verbal explanation. I subscribed. Eagerly looking for more from you. Cheers!

  • @marvinegreen
    @marvinegreen Жыл бұрын

    I vaguely remember a Japanese scientist came up with a 2 layer solar cell that captured more of the light spectrum. Maybe 3 or 5 years ago. Is this a development of that work?

  • @bariole

    @bariole

    Жыл бұрын

    I don't know anything about this particular scientist, but multijunction cells are being produced for at least 20 yars. Historically, they are very expensive.

  • @testboga5991
    @testboga5991 Жыл бұрын

    Honest tech commentary on YT. Awesome!

  • @brodyalden
    @brodyalden Жыл бұрын

    Thanks for covering this!

  • @davidwilson192
    @davidwilson192 Жыл бұрын

    It would be really nice if you linked to the actual scientific article in the video description

  • @Guardian_Arias
    @Guardian_Arias Жыл бұрын

    Neat, you already stated that using a conductive layer between the N and P Type layers increase the efficiency of fluorescents but i wonder how other diodes might be affected. For example traditional diodes, Organic Light Emitting Diodes and even the ubiquitous double diode glued to itself, aka the Transistor. I also wonder what other conductive materials could be used like the uber hyped graphene and maybe even superconductors in the next "20 years"

  • @martinklein9489

    @martinklein9489

    Жыл бұрын

    A metal layer between N and P kills the diode, I guess the silver goes below the NP sandwich, however they are arranged in perovskites. In OLEDs you don't want your pairs to be stable, you want them to recombine as efficiently as possible in the intrinsic layer. Almost all semiconductor devices already have some kind of metal layer attached as these are the way to contact and use the devices, so no surprises there. Metals in combination with graphene alters the band structure of the graphene. This is used to create a multitude of effects f.e. for sensor applications. Although we are usually not talking metal sheets but small islands or single atoms of metals here.

  • @moremartin320
    @moremartin320 Жыл бұрын

    Thanks for sharing and explaining! I learned a lot from your tutorial. I hope this technology will hit the marked soon.

  • @couchyrick6300
    @couchyrick63004 ай бұрын

    Thank you for making a video like this that wasn't clickbait or ai voiced

  • @ScienceDiscussed
    @ScienceDiscussed Жыл бұрын

    Nice video and a cool concept. I didn't read the paper but was there any suggestion that this could work for materials that don't involve silver. From my understanding access to silver is a serious roadblock for solarpanel manufacturing and removing sliver would save a lot of money.

  • @_shadow_1

    @_shadow_1

    Жыл бұрын

    Other metals could probably also be used in place of silver if reflectivity is the major property at play here. Aluminum has a very high reflectivity and electrical conductivity and it can have an oxide layer which can be adjusted in thickness to reflect certain wavelengths of light. A specifically tuned layer of aluminum + aluminum oxide might have similar efficiency if I have the correct assumption to what is going on here.

  • @ScienceDiscussed

    @ScienceDiscussed

    Жыл бұрын

    @@_shadow_1 great answer. Thanks

  • @patpowers9210

    @patpowers9210

    Жыл бұрын

    @@_shadow_1 I was thinking about aluminum myself and was hoping to be the first to bring it up. Curses, foiled again!

  • @HolarMusic

    @HolarMusic

    Жыл бұрын

    @@patpowers9210 hehe, foiled

  • @BenBCNus
    @BenBCNus Жыл бұрын

    So, typical solar cells are in the 20-30% efficiency range...does this mean that these new cells could have around 75% efficiency? I can't believe this was not ever discussed in this video 👎

  • @DIYDaveOK

    @DIYDaveOK

    Жыл бұрын

    That's how solar propaganda works. Hint, suggest, imply, but when it comes to demonstrate...that's often conspicuously missing. I'd like to see the hard data as well.

  • @kittimcconnell2633

    @kittimcconnell2633

    Жыл бұрын

    Those estimates should follow the creation of stable PV film. This video is about a developing technology, so its numbers are not yet relevant.

  • @BenBCNus

    @BenBCNus

    Жыл бұрын

    @@kittimcconnell2633 Yes, of course...that is the problem...he video title & thumbnails don't reflect what the typical viewer expects ("Ultra Efficient Solar Panel Breakthrough" and the thumbnail shows a 250% efficiency improvement)...if the video had stated something about improving a part of the process which has no current bearing with solar panel efficiency, that would have been different...in essence this is just cheap click bait 👎

  • @blakelee4555

    @blakelee4555

    Жыл бұрын

    No he said 250% INCREASE, so if it was 25% efficient before, 100% increase brings it to 50%, 200% increase brings it to 75%, and 250% increase brings it to 87.5% 😂

  • @BenBCNus

    @BenBCNus

    Жыл бұрын

    @@blakelee4555 If you use 20%, a 250% increase is 70%, so just rounded up a bit to 75%...not sure what your point is...

  • @madmesmith5187
    @madmesmith5187 Жыл бұрын

    Thank you Ben for sharing and making understandable....Awesome....The wonders of the human mind....❤

  • @acmottram
    @acmottram Жыл бұрын

    I just love clever people. I didn't understand a word of what he said but it was great. I then loved the feed back from others who did understand this and raised thoughts and questions in only the way they can. Its factual and with out malice. So often our clever people are maligned what a great sadness. For all of you who suffered at school for being clever, thank you. The future of society and the world may rest upon you. I am also waiting to see if the technology for solar will reach the gen 4 stage while i am still alive. Go clever people.. :)

  • @ClouD-jb9nz
    @ClouD-jb9nz Жыл бұрын

    Excellent coverage of the paper, well summarised and explained. One remark: at 3:52 , the p/n doped regions do not have net positive/negative charge, but they are called p and n because of the type of majority carriers present in them (holes/electrons). The dopant atoms (from III/V groups) have both one less/extra electron, but also one less/extra proton in the nucleus, so they do not contribute a net charge. The same way, the depletion region is not neutrally charged, but it is slightly negative on the p side and slightly positive on the n side (since electrons have moved from the n side to fill the holes on the p side). This imbalance of charge generates a potential difference and hence an electric field across the depletion region, and this is what stops the flow of carriers across the junction

  • @daily8150

    @daily8150

    Жыл бұрын

    Just the comment I came looking for before commenting myself about doped semiconductors being neutral

  • @HarryAGeorgiou
    @HarryAGeorgiou Жыл бұрын

    Great video, i studied perovskite solar cells a few years ago when i tried and failed at a PhD in them, but I learnt quite a bit and wrote a massive review paper on their stability that was not accepted because it was too big. I might try to do a video on that but it might take a while. I think it is great the style and easy you describe things, so nice one .

  • @Infoagemage

    @Infoagemage

    10 ай бұрын

    Kudos for preserving through failure 💪🏼

  • @KallePihlajasaari

    @KallePihlajasaari

    10 ай бұрын

    I encourage you to publish your findings in any format. Too much wisdom is lost or hidden that could help humanity in some small way. The more that is public domain, the less the corporate overlords can dictate who gets to use the information.

  • @JoeBloggs-ev2ui
    @JoeBloggs-ev2ui Жыл бұрын

    At the end of the day, the strength of sunlight tops out at about 1300W/sqm; so a conversion rate of 25-50% makes solar a very viable energy source. If they can get perovskite into this realm, the opportunities are amazing for off-grid living

  • @philipkudrna5643
    @philipkudrna5643 Жыл бұрын

    I loved the Galadriel quote!

  • @lancecorey6582
    @lancecorey6582 Жыл бұрын

    It would be interesting to find out if aluminum can be used as the substrate to hold the perovskite and still enhance the energy output. The aluminum would provide a stiff layer so the perovskite would not be damaged from flexing.

  • @sampleoffers1978

    @sampleoffers1978

    Жыл бұрын

    He said mirror effect with the silver and I don't own any solver mirrors

  • @ankurbhatnagar4609
    @ankurbhatnagar4609 Жыл бұрын

    What do you mean by 250% efficiency increase? How much is it for the new system after the increase?

  • @yoshy2628

    @yoshy2628

    Жыл бұрын

    PEROVSKITE SOLAR CELL got around 29% efficiency. 250% will land around 70%?

  • @cocis911
    @cocis9116 ай бұрын

    Brilliant explanation - huge congrats on this video! And thank you!

  • @markhuebner7580
    @markhuebner7580 Жыл бұрын

    Beautiful! Thanks!

  • @douglee2438
    @douglee2438 Жыл бұрын

    So what is the overall conversion efficiency of these cells?

  • @user-pf5xq3lq8i

    @user-pf5xq3lq8i

    Жыл бұрын

    The fact they never told is a huge red flag.

  • @pappaflammyboi5799
    @pappaflammyboi5799 Жыл бұрын

    Reference source articles please...

  • @chiphappened
    @chiphappened10 ай бұрын

    *Finally Some good news possibly coming soon* GR8 Video 👍🏻☮️

  • @technokicksyourass
    @technokicksyourass Жыл бұрын

    Great to see a champion of solar energy that is truthful about the technology advancements. After 20 years of climate alarmism, and massive overpromising from the industry, it's refreshing to see someone just presenting the science.

  • @vueport99

    @vueport99

    3 ай бұрын

    And what nobody talks about is panels are dirty to produce, has a limited life time.... And what are we to do with all the old panels?

  • @benjamindent4806
    @benjamindent4806 Жыл бұрын

    If I remember hearing the creator from cal tech, he said while they are powerful and efficient, they are not durable and extremely cost prohibitive. Durable part is the key. Everything is expensive and over time it becomes cheaper

  • @theobserver9131
    @theobserver9131 Жыл бұрын

    Dude, I almost blocked you. 250% efficiency? (on your clickbait thumbnail). You're talking magical energy from nothing. It doesn't get better than 100%, and even that is impossible. Please, be a responsible representative of science and reality. Thumbs down for that.

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    2.5x means between around 45-55% efficiency- the confusing part is where he said a "factor of" 250% which doesn't make sense

  • @alistairmackintosh9412

    @alistairmackintosh9412

    Жыл бұрын

    Agreed. A 250% increase in efficiency would have been a better phrase.

  • @theobserver9131

    @theobserver9131

    Жыл бұрын

    The key to my comment is; "on the clickbait THUMBNAIL". It says simply 250%efficiency. Not 250% IMPROVEMENT....as in 2.5 times better than the current level. The video itself is fine and easy to understand. It's actually excellent in my opinion. It's the thumbnail that is false and misleading.

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    @@theobserver9131 250% efficiency makes no sense, that would be a material absorbing at 3-5 suns at 50% efficiency... Or in space at double the solar luminosity concentration. Even if a solar cell was 100% efficient in space it would only equate to 200% efficiency on earth ignoring ozone layer, clouds, ionic and radio interferences, aerosols and atmospheric moisture.

  • @jeanpaulchristian3282

    @jeanpaulchristian3282

    Жыл бұрын

    If. Wind turbine were 100% efficient there would be no wind behind the turbine, maybe you can use electrohydrodynamic attractors to concentrate wind sheer solely on the wind blades themselves, but then there would be no wind but a low pressure zone behins the wind turbine

  • @jp34604
    @jp34604 Жыл бұрын

    Beyond excellent thank you

  • @aclearlight
    @aclearlight2 ай бұрын

    A wonderful tutorial, thank you!

  • @JuliusUnique
    @JuliusUnique Жыл бұрын

    wow, this is amazing

  • @stephenpike3147
    @stephenpike3147 Жыл бұрын

    Fascinating what is going on with this material, I can see the weight reduction making fitting of solar panels so much easier if it becomes a real proven break through. The perovskites to silver charge interaction is almost a mirror image of an induction motor (perovskite = stator, silver = rotor and more tenuously release of photons = flux). In my simple mind would etching breaks in the silver so as to prevent recombination of charge ( analogous to the induction motor eddy currents and associated power losses) in the silver and thus maintain photon reproduction levels towards peak levels?

  • @DrinkingStar
    @DrinkingStar Жыл бұрын

    Good Pros and Cons about Perovskite which have also been mentioned in other videos. However, as far as I know, you are the first that I have seen who explains how it works to improve efficiency....... I hope that some day you do a video on the optical concentrator, Axially Index Lens(AGILE) being developed and studied at Stanford U. Precourt Institute foe Technology.

  • @AreHan1991
    @AreHan199110 ай бұрын

    Thanx! Very well and clearly explained 😁

  • @DeAlpineBro
    @DeAlpineBro Жыл бұрын

    I ignored this video at first because "breakthrough" videos are...well, let's say I'm skeptical. This was excellent, Dr Miles.

  • @lukaszbiniecki8624
    @lukaszbiniecki8624 Жыл бұрын

    How durable are these perovskites. Is it any longer than 5 months?

  • @stevencaskey8502
    @stevencaskey85029 ай бұрын

    Good stuff. Thank you .

  • @greenfrog58
    @greenfrog58 Жыл бұрын

    Great video!

  • @lnebw99
    @lnebw99 Жыл бұрын

    In the end you say: if we solve the problem, the problem is solved. How enlightening....

  • @Ccodebits
    @Ccodebits Жыл бұрын

    Good thing I've been waiting to get solar panels.

  • @VinMotors0613
    @VinMotors0613 Жыл бұрын

    What are your thoughts on this matter? I am considering purchasing solar panels for my home. Should I wait for advancements in technology, or should I go ahead with the current 400-watt solar panels? It's a decision I need to make, and I'm weighing my options.

  • @cheekybastard99
    @cheekybastard99 Жыл бұрын

    I've been reading about massive solar breakthroughs for the last 20 years,

  • @jeremytaylor3532
    @jeremytaylor3532 Жыл бұрын

    If they sprayed multiple layers of different perovskites on a mirror surface ( say a stainless cybertruck) then sprayed a partially silver surface over that so that light entered but then was trapped between the two silvered surfaces, like a laser beam is trapped in a ruby. Then possibly most of the light would bounce back and forth in the energy generation layers until they connected with an appropriate photo hole. Thus giving a near perfect conversion to power. If inexpensive highly efficient solar cells become possible it would really help out the grid.

  • @gene4094
    @gene4094 Жыл бұрын

    The energy conversion by solar cell for our energy needs. The same Perovskite molecule can be use for obtaining partial water plasma state. The same state that is in fluorescent lights to lightning bolts.

  • @ram64man
    @ram64man Жыл бұрын

    The issue I have many housing developments will reject the pannels that are highly reflective, already we see planning approvals limited to mono cell for neighbours approval especially hill side developments., hopefully they can still develop a cell for all spectrum wave length that’s more important than making them cheaper or adaptable in my opinion as this technology will still be expensive for many so maximise amount for less pannels is key

  • @davidcummings2020
    @davidcummings2020 Жыл бұрын

    The amount of led used in the solar panels is so negligable compared to what the battery industry still looses even though lead recycling is a huge success story. lets lake the short path to the next generation and work on the lead levels later right? btw great explanations.

  • @L.L
    @L.L Жыл бұрын

    Damnnn keep it up people lets develop that to the max. Now I want that on my car roof 😊

  • @ernestestrada2461
    @ernestestrada2461 Жыл бұрын

    I'm glad that you mentioned that these are thin film printer technology that have a limited life. But people listen to only half and then turn around and say this is a viable technology which it is not.

  • @Andrewlohbihler
    @Andrewlohbihler Жыл бұрын

    Since perovskite has a band gap 0f 1.4 eV, how does this 250% increase in efficiency relate to the band gap of perovskite? Does it close the gap virtually, or something else? Can a mirror be added to Silicon too to increase efficiency in a similar way?

  • @maloukemallouke9735
    @maloukemallouke9735 Жыл бұрын

    Thanks more video Like this one please.

  • @rolyantrauts2304
    @rolyantrauts2304 Жыл бұрын

    In the UK our main energy requirement is heat, but for some reason we focus on what could be considered appliance energy. Solar thermal walls and roofs even in northern climes could achieve winter heating and the excess through summer can generate through an ORC likely cooled in a heatpump groundloop. Thermal stores can be little more than a insulated wall type which creates a generation latency to offset peak sunl;ight by several hours. Solar PV has focus because it can be sold and fitted as a cunsumer product whilst likely if designed and built, we already have extremely fit for purpose regional renewables.

  • @Bianchi77
    @Bianchi77 Жыл бұрын

    Nice video, keep it up,thanks :)

  • @sreekumarUSA
    @sreekumarUSA5 ай бұрын

    Thanks!

  • @shiinondogewalker2809
    @shiinondogewalker2809 Жыл бұрын

    red light is the lower end of the energy spectrum, which is inverted wavelength spectrum that they show in the graph

  • @nzoomed
    @nzoomed Жыл бұрын

    This is exciting, but I bet its decades away before we can buy them.

  • @tamingthejungleanallotment5486
    @tamingthejungleanallotment5486 Жыл бұрын

    Please correct me if I've misunderstood this, but it sounds as though the charged particles are reacting to a reflection of themselves? If so, could this be related to the observation paradox where a photon acts as a particle or wave depending upon whether it is observed?

  • @BELINC7
    @BELINC7 Жыл бұрын

    I am glad I decided to read the comments first instead of watching the video, now I don't have to, because he blowing in the wind.

  • @RK-tf8pq
    @RK-tf8pq Жыл бұрын

    Can this mirror approach be also used in thin film silicon solar cells to reduce recombination events?

  • @djz5025
    @djz5025 Жыл бұрын

    So does this use more or less silver than Solar 2.0? Because it sounds like more. Can copper be used as a silver substitute?

  • @davidlee50
    @davidlee50 Жыл бұрын

    I might support it if the layer is protected like a double pane window in vacuum so the abrading wind on a roof sample would not pit it. My glasses do not last more than a year now because of low tech.

  • @mikelord93
    @mikelord93 Жыл бұрын

    Wow, these would be great for all the applications because you can tailor them to any need you have. You can use them in tandem for farming, for example, or as coating for windows so that you can synthesize vitamine D without the worry of skin cancer. Applications are endless

  • @havenbastion
    @havenbastion Жыл бұрын

    "Less light teaching the lower layers" doesn't mean a lot when you can just stack the layers in order of wavelength so the deepest penetrating ones are on the bottom layer.

  • @TheTrumanZoo
    @TheTrumanZoo Жыл бұрын

    can they not use a one way mirror as a top layer on a mirrorlike substrate bouncing the photons in a trap or a hall mirror loop...

  • @buybuydandavis
    @buybuydandavis Жыл бұрын

    Is silver the best option for the mirror layer? Are there good alternatives?

  • @bobjones3579
    @bobjones3579 Жыл бұрын

    If this mirroring effect requires metal can we use aluminum since it is way cheaper then silver?

  • @philliplabuschagne5508
    @philliplabuschagne5508 Жыл бұрын

    In South Africa we have 4 hours up 4 hours down time with National Load Shedding. So Solar is a must, but you need 10 panels to run an average house hold. The efficiency vs cost is not ideal. If we could "3D Print" panels say on "mirrors" locally the shipping cost would be gone and maybe Solar Panels could become part of your house windows. Time this is sped up for a better future. Building real energy efficient houses with appliances (Lights, TV, Fridge, Laptop and Computers) running on DC not AC plugs

  • @ericmichel3857
    @ericmichel3857 Жыл бұрын

    Great work everyone, call me when it's ready.

  • @dsd2743
    @dsd2743 Жыл бұрын

    Please leave reference to the respective publications in the description. That would be highly appreciated.

  • @Lilljehook
    @Lilljehook Жыл бұрын

    So is this 5 or 20 years to a comercial product? So if I should hold of or not to buy panels?

  • @christopherleveck6835
    @christopherleveck6835 Жыл бұрын

    So where can I buy them? Running the numbers, if I replace the SunPower cells i just bought, arghhh, I only need half as many of them. But I need them NOW.....

  • @RonSonntag
    @RonSonntag Жыл бұрын

    Would have liked a direct comparison of efficiency of conversion of sunlight to electricity. Early on you talked about silicon being somewhere between 18% - 24% (or so) efficient. But, later in the video you switched to talking about a 250% increase in current density. Not the same thing. So, what is the conversion efficiency of this breakthrough?

  • @mikevincent6332
    @mikevincent6332 Жыл бұрын

    Lead comes from the ground, why would it be a problem if it eventually ends up back in the ground?

  • @truegret7778
    @truegret7778 Жыл бұрын

    This is fascinating! ARCO Solar had a TFS product (ThinFilmSilicon) panel product. It had similar conversion efficiencies (10-20% as I recall), however, an interesting challenge was cosmetics. One use case was to use a variation of this TFS product as the sunroof on vehicles, and ANY scratch or blemish or discoloration was cause to scrap the part.

  • @igotufoinformation9636

    @igotufoinformation9636

    Жыл бұрын

    Sunroof on electric vehicles? Sounds good but I'd rather use solar for my home and reliable gas for my vehicle.

  • @truegret7778

    @truegret7778

    Жыл бұрын

    @@igotufoinformation9636 Good for you ..... this was in the early 1990's, and intended for simply running the interior fans to keep the vehicle cool during hot days. Long before Tesla. The only e-vehicle back then on the market back then may have been the GM-EV1 (I think they were introduced in 1996). The panels were translucent. Maybe do a little research before you sound off and look silly.

  • @igotufoinformation9636

    @igotufoinformation9636

    Жыл бұрын

    @@truegret7778 that's the first mass produced electric vehicle, t In 1912 the electric roadster was almost $2k while the gasoline car was about $700 Lol don't be silly

  • @truegret7778

    @truegret7778

    Жыл бұрын

    @@igotufoinformation9636 The model T was about $850 in 1908, while the first e-carriage came along around 1832 (rechargeable batteries not until 1859). Again, the TFS sunroofs were not for e-vehicles. But, whatever ... don't be such a dork, and maybe put your tin-foil hat back on and look for those e-UAPs. Cheers

  • @igotufoinformation9636

    @igotufoinformation9636

    Жыл бұрын

    @@truegret7778 I never claimed they were for e vehicles. You're trying to prove me wrong on a claim I never made. That sounds like a horrible marketing decision anyways lol 🤪 you need a tin foil hat, protect the little you have left

  • @simonbowman6206
    @simonbowman62067 ай бұрын

    In comparison with a 250watt panel is this unit more recyclable? A 250watt panel IF recycled end up at 55-65% the rest is in the tip SO is it greener?

  • @keithrosenberg5486
    @keithrosenberg5486 Жыл бұрын

    I will believe it when it is installed in my solar array. And can it be made in huge quantities cheap enough for the average person to own.

  • @anthonylipke7754
    @anthonylipke7754 Жыл бұрын

    Does it work with a cheap conductor like aluminum?

  • @anoirbentanfous
    @anoirbentanfous Жыл бұрын

    I think tiny holes made by LASER in the substrate could do the same if not much better

  • @winfordnettles3292
    @winfordnettles3292 Жыл бұрын

    It would real interesting if the technology can be put into production for a limited test run on a large scale array. I'll be holding my breath........

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