and solve the differences through peaceful means and that's it for now. up next planet, a looks into a new technology that is promising to revolutionize solar energy. i. melissa chad, thanks for watching dw, the goals we say they're never giving up every weekend on d. w. dw, on pixels we in fact, every day, the world wide web feel free to leave, the doctor is always highlighted because we can take the different w call, the world unpack,

pulse of your info is and all the input your b, w story. now on to the tiny solar cell, my thing about the revolution i, solar energy, as we know it, it's more efficient than a spend. that's it, it can solar cell. it can be easily synthesized and doesn't need to be mind like silica as it can work on to in film. so you probably a smart house speaker, but it also it can go on your roof. say hi to this crystal struck chuckle is pearl skies. it promises improvements to solar cells that are almost too good to be true . that's why we're using solar cells. well for spouses, the regular solar cells, you know, i made with silicon and they actually quite inefficient, converting some light into energy. only about 20 to 25 percent of sunlight can be captured on a commercial size,

but that silicon needs to be mine. and purified in energy intensive processes that require more than 1000 degree celsius of heat. if you want to know more than this, we have a full video on that. here, i bought a new material called corrupt cut might actually be able to solve all of this to understand why they asked us to peer out to you a spend that silicon. so i went here the, how much sent home in building they've been researching postcards as set up solving materials for about a decade. hey, how are you today? i'm good. and this is the guy in charge of the research and steve, i even said world records for the most efficient pearl skype, solar cells. so on a very basic level, what does for us kind of look like the temper asked as a very generic term for a specific crystal structure, right? you can see that here over there. so the crystal structure has the x 3 formula. and

like each component is the sort and i the element for molecule. one of the most common combinations in the structure is methyl ammonium as the a on the corners. the metal lots for be in the center and the chloride or iodide as the ex, which foam around the metal. but there's quite a vast range of materials that can be used and combined. and it's quite wild how easily these can be put together. oh, this is 11 fine and but before we do that, security 1st as we are going to up with toxic flat with one of these. all right, it's good to go look at it. like i mentioned that it was okay. time to get in our base materials, matthew mixes methyl ammonium, chloride, and let i o die too late to create or abs for you. crystal structure, by the way, everything happens in these boxes so that no water or oxygen comes in contact with

our precious peroxide. so what is now the advantage of these materials compared to silicon? so i believe that one of the main advantages of prostate or silicon as material is the ease of processing. so silicon is something that is relatively energy intensive to fabricate. but this is something that can be done at post to room temperature, so it doesn't require much energy. so it's easy to do. everything is relatively abundant. and so, um it, it's, it shouldn't be a bottleneck for production. so these base materials are more abundant then silicon and easier to process. now we have the base materials, but how do we make is some absorbing pair off skies, out of it. so i deposit uh the solution of prostate and then it spins up quite fast. so something like, uh,

4000 revolutions for permanent and then i dropped on this patient and that drives the, the crystallization. the method that matthew is using his cold spin coating pearls kind solar cells can also be directly printed onto surfaces using similar processes to those useful printing newspapers. another method is if that parades and perhaps guides onto surfaces, spend coatings usually takes place in the lab environment and it can be tedious. matthew accidentally dropped the glass, not a big problem in the lab environment, but for commercial production, this is not viable. matthew gives it a 2nd try and this time everything works. after the spin coating it goes onto a heating plate and the darkening shows us that the crystals are being formed. it works the same way as when sold water evaporates and you start to see the salt. there are cells like this one here, which are only made out of rough guide,

but in many cases there's a silicon layout beneath the of the cells. i called 10 themselves and looked like this right now, they are the most promising candidates when it comes to increasing the efficiency of solar cells. but at some point, it might be possible to a band. and so they can completely test that 10 themselves efficiency. the research was at hand, hard sent home, use a some simulator. it determines exactly how much sunlight is converted into electricity. what kind of efficiency that we just met? so when we measure almost 30 percent, quite nice achievement. why does it tend them? so a cell reach that much more efficiency than single johnson felt. so thumbs all samples may much more use of the incoming lights. so we have on so on spectrum, either the solar cells, they channel the spectrum, the parent skype. so also in this case, makes use of the visible wavelength. so everything which we can see by i,

it's been converted into pay arrows got installed on sale into electrical energy. whereas the infrared light passes through the peril sikesdale and has been converted into silicon salsa which is quite deficient in converting info red line. so the share of the spectrum in each cell is very efficient. and the reason it doesn't sound like that much, but i just tells me this way, roughly 50 percent more, some lives can be converted into electrical energy. so more overall sunlight can be solved by any of these tendons. so yeah, because before they go into serious reduction, normal stuff that needs to be a major issue is the stability of peril. scott structures using 10 themselves. they're also got structures easily put together at low temperatures as we saw earlier, but they also come apart easily. even the charges that travel through the pearl, scott and the cell, the cell can create defects and destroy the power of god. structures. also,

external effect does like moisture heat, oxygen, and u. v. light can break it down further and quickly decrease if it's a record breaking efficiency. this whole process is called degradation, which researches and companies are trying to fight with different forms of m calculation. it's used office solar modules from accidental influences and is an essential spent for commercialization to sales, which is part of a do a p and academia and industry partnership plans to develop commercial size modules with an efficiency of 26 percent of a lifetime of 13. yes, ox for tv. a company founded by oxford university graduates has reached an efficiency of 28.6 percent and supposedly sold the degradation issue already. but both companies haven't published verifiable data yet. that also isn't even a lot of research on real world outdoor tests. i these are

a lot of so unless you test it, wow. this is kimberly, she oversees the degradation tests of 10 themselves at hand points 10, told at what kind of the abilities we currently looking at here, sometimes to fail after a few days left. sometimes the last 4 years literally measured a low, 20 percent and efficiency in just half a year. other researches in saudi arabia, for example, came up with similar results. for comparison, it takes the console of sales roughly 20 years to reach that level of degradation. the number that 10 themselves health would need to match some companies say they've already fix this issue and ready to go to market next. yeah. do you believe that's possible? sometimes here we must also have conferences, but they normally don't show the data. it's all very secret. i assume that david

and the next years produced samples, and that is very important to do because then you can test them on your own sites in the p to fuse and before you commercialized them before you save them to customize your contest inside. whether it's really true, because it's really hard to say about the samples that we have out here of the one year that they're going to last for 55 years. and until now we've only talked about the technical side of things, but tell them, so let's have another thing coming. if have about skype is going to go anywhere. it will need to be cheaper then press to then or direct crystallize, set it cut on a pad well basis. this is jenny chase. she's analyze the solar market for 18 years and found that the solar analysis team at blue book. and yes, let's go to be the one a cost po, up, which is company. $12.00 us cents per well, and it will be 12 by next year. according to the international renewable energy agencies, since 2010 costs for electricity from solar have declined,

but 89 percent globally. it's now more expensive to install silicon panels than it is to make them meaning the limiting factor for solar on manufacturing costs, but grid connection land permits, all label for installation. it really comes down to the company that sells. the cost of dependency factor matters. just to get these at the stable volume production, it will make a lot of money. if nobody does, then solo will still get billed one company that claims it has sold the degradation issue is export tv. it says together with partners, it comes to the modules in the middle of 2024, and that we'll have utility scale sort of products with 10 themselves in 2026 or 2027. looking at today's the efficiency number solar parts like that will generate 25 percent more energy then comparable. so they can sell the parks, solar panels, those have a good rates potential, but there's still

a lot of things that need to fall into place for them to work. and i'm really, really curious if they're actually going to be on the market next year on reggie how did you like the video please let me know in the comments and subtract our channel. we posted the videos on the environment every friday. the

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