UCLA's dual-layer solar cell

Photo Credit: UCLA Samueli Engineering

Materials scientists from the UCLA Samueli School of Engineering have developed a powerful thin-film solar cell that generates more energy from sunlight than average solar panels, as a result of its double-layer design, according to UCLA.

The device is made of an inexpensive compound of lead and iodine, known as perovskite, that has proven to be very efficient at capturing energy from sunlight. A thin layer of the perovskite is sprayed onto a commercially available solar cell, while the solar cell that forms the bottom layer of the device is made of a compound of copper, indium, gallium and selenide, or CIGS, creating a new cell that successfully converts 22.4 percent of the incoming energy from the sun, versus the previous record of 10.9 percent by a group at IBM’s Thomas J. Watson Research Center in 2015.

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Transparent solar materials on windows could gather as much energy as bulkier rooftop solar units, say researchers.

The authors of a new paper argue that widespread use of such highly transparent solar applications, together with the rooftop units, could nearly meet US electricity demand and drastically reduce the use of fossil fuels.

“Highly transparent solar cells represent the wave of the future for new solar applications,” says Richard Lunt, an associate professor of chemical engineering and materials science at Michigan State University. “We analyzed their potential and show that by harvesting only invisible light, these devices can provide a similar electricity-generation potential as rooftop solar while providing additional functionality to enhance the efficiency of buildings, automobiles, and mobile electronics.”

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Solar Tech to Enable First Underground Park

The Lowline is not just a design project. It’s not just an example of innovative technology. It’s not just an effort to revitalize a community. The Lowline is an example of how science and drive can improve and transform the landscape of modern cities.

If you haven’t yet heard of Lowline, it will essentially be an underground park powered by innovative solar technology located in the 116-year-old abandoned Williamsburg Bridge Trolley Terminal in the Lower East Side of Manhattan.

The technology is designed by James Ramsay of Raad Studio, who looks to overcome subterranean limitations with his underground oasis of plants and trees.

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