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oh crap i fear sorry i'm going to talk in english so we're going to move to something a bit more basic
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so example easy here is an array of elements and i'm not aware isn't really good
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the stuff studying these is that these are very good absorbers now one of the main interest of
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our laboratories to find sustainable solutions put energy harvesting any particular to use this on for this
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now if we look at the most a fusion solar cells nowadays is are are made of these materials
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and these are the size efficiency so the question is can we use this technology for our
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homes totalled the forgetting all the energy that need for or or like the nice
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and with this we need to calculate me to see how much of these elements are there and you need to
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look at this graph here in this graph we just use the buttons of elements in the earth gross
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what you see is that reform in elements like silicon aluminium that idea buttons if you look at the ones that they
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just show you like got understanding in in you that much less abundant any particular team is very the discourse
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so now what we look in our laboratories to persist enable submissions so we
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look at two main axes for finding the sustainable solutions for solar energy
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one is try to avoid these elements finding new materials that that was with this these ones
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but uh using element that that what about that and the second one
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is ah going but intelligently in the use of these are materials
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and the first edition that one comes into my busy if these materials are expensive and also just use less of it
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and so we can go from bought materials to nana still materials and we do this in a
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smart way maybe you can uh get a good addition see also and use less resources
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and it turns out that nature is nice with us because when we
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produces materials in the night away for any features that mentions
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you know the right way what we find is that these are structures capture
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light around them and the capture like to a very large extent
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so it means that they have like not scale lenses and so you need much less mature for
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these are not only got another structure but you you you use the space between amanda structures
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so we if we do calculations and we look at what happens when we put these
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materials that the last the space so what you see here in the top
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you see that um how like getting to the structures when you start to spacing them and on the far right what you see is that
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when there that is by so uh far apart means that the lights dancing to them so they're able to collect more and more like the round them
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so what this says is that they're able to use about ten thousand times
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less materials and collect as much less that's the views of eddie
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a whispered of these material now not only this but you can try to ah
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also use the substrate we have still gonna substrate silicon also can observe
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all the parts of this on and off you can have you been highly efficient solar cells by using both than other structures and the cheap substrate
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so i would like to finalise the thought to explain what tools we use these are
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general tools that are use not only for a solar energy purple many other things
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so what we do is i think that sea of high quality material so why
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should be the three fives but we also are starting activity or nothing falsified
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i very high quality material that are high so that about that body should have and so with elements of that much more abundant
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we have a that intends a word in the clean rooms here to get out that are are outstanding and state of the art access to
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like the microscopy we do optical spectroscopy to characterise the materials and also
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the devices and we do simulations to guide our design of course
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so with these i think of course the people in my group that do the job