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BBCNEWS The Engineers June 4, 2024 01:38:00

Vehicles off the road. wow, that is pretty, pretty impressive. henry, look, i want to turn back to solar for a second. perovskite is the material you ve been working on. what is it, how does it work, and why is it such an improvement and such a possibility for the revolution of solar power? perovskite is a crystal structure. one of the unique aspects of them is because they re composed of three different irons, we can actually change the composition of these irons and that changes the optical properties and electronic properties of this material. this means instead of using a single material to absorb the sunlight, we can actually tune the perovskite to absorb in different regions and stack these materials on top of each other. now, this stacking of solar cells on top of each other we call multi junctions, and the simplest mult junction is a tandem cell, two solar cells on top of each other. and the perovskite we tune to match perfectly silicon. it absorbs only the visible light and we ....

Henry Snaith , Working On , Solar Power , Crystal Structure , Each Other , Solar Cells , Multi Junctions , Mult Junction ,

BBCNEWS The Engineers June 4, 2024 01:39:00

Two solar cells on top of each other. and the perovskite we tune to match perfectly silicon. it absorbs only the visible light and we left the silicon absorb all the infrared. and in doing that we actually fundamentally improve the efficiencies. if we made a perfect perovskite on silicon tandem cell, that would top out at about 45%. so we ve fundamentally lifted the ceiling. and if we went one step further to anotherjunction, triple junction, three junctions, that would top out at just above 50%. so what perovskite does is lift the ceiling for potential efficiency and gives us a new path forward to go to higher and higher efficiency. so, i mean, substantial gains in efficiency here. how close is this really to being a real technology? is this now, or this is far flung future? this is very near term. ....

Each Other , Triple Junction ,

BBCNEWS The Engineers June 4, 2024 05:39:00

Multi junctions, and the simplest mult junction is a tandem cell, two solar cells on top of each other. and the perovskite we tune to match perfectly silicon. it absorbs only the visible light and we left the silicon absorb all the infrared. and in doing that we actually fundamentally improve the efficiencies. if we made a perfect perovskite on silicon tandem cell, that would top out at about 45%. so we ve fundamentally lifted the ceiling. and if we went one step further to anotherjunction, triple junction, three junctions, that would top out at just above 50%. so what perovskite does is lift the ceiling for potential efficiency and gives us a new path forward to go to higher and higher efficiency. so, i mean, substantial gains in efficiency here. how close is this really to being a real technology? is this now, or this is far flung future? this is very near term. you can t go out today and buy perovskite solar cells, ....

Each Other , Multi Junctions , Mult Junction , Triple Junction , T Go Out ,

BBCNEWS The Engineers June 4, 2024 19:39:00

To match perfectly silicon. it absorbs only the visible light and we let the silicon absorb all the infrared. and in doing that we actually fundamentally improve the efficiencies. if we made a perfect perovskite on silicon tandem cell, that would top out at about 45%. so we ve fundamentally lifted the ceiling. and if we went one step further to anotherjunction, triple junction, three junctions, that would top out at just above 50%. so what perovskite does is lift the ceiling for potential efficiency and gives us a new path forward to go to higher and higher efficiency. so, i mean, substantial gains in efficiency here. how close is this really to being a real technology? is this now, or this is far flung future? this is very near term. you can t go out today and buy perovskite solar cells, but we re building a production line at the moment. we re talking about next year that the first cells and modules will be in production, and start to be ....

Triple Junction , Production Line , T Go Out ,

CNN CNN Newsroom With Fredricka Whitfield June 4, 2024 15:14:00

Today, we have the technology, like you and i are talking right now, we have the ability to communicate. we the scan. we can infrared. we can check the solidity of the concrete. we can see it live, each and every place we are on the live building. every issue on social media is a suspension joint, but some of the things that were put on the tv and social media are quite scary. that s what we are really dealing with rapidly and quickly. all right. we all remain hopeful for continued safety. kobi karp, thank you so much for your expertise. appreciate it. thank you. all right. still ahead, the fourth of july holiday weekend, well, it s right here. millions of americans are traveling despite new concerns about the delta variant. plus, a major american city urging vaccinated residents to wear masks indoors, even though the cdc says they aren t necessary at all. we ll break down all of your coronavirus headlines next. ....

Social Media , Suspension Joint , Kobi Karp , Fourth Of July , Delta Variant ,