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Solar on the Move: All-Perovskite Tandem Technology Jump-Starts the Pursuit of Photovoltaic-Powered Vehicles

Established in 1963, the R&D 100 Awards is the only S&T (science and technology) awards competition that recognizes new commercial products, technologies and materials for their technological significance that are available for sale or license. The R&D 100 Awards have long been a benchmark of excellence for industry sectors as diverse as telecommunications, high-energy physics, software, manufacturing, and biotechnology. This year's R&D 100 2020 winner is listed below in their respective category.
 
Category: Mechanical/Materials
Developers: National Renewable Energy Laboratory, Swift Solar
United States

Product Description:National Renewable Energy Laboratory’s all-perovskite tandem technology could open up an entirely new solar-energy application: vehicles powered directly by photovoltaics (PV). No previous PV technology achieves the combined flexibility, low cost and high specific power needed for PV-powered vehicles. All-perovskite tandems have a specific power 10x higher than flexible PV technologies of similar cost, and they cost 200x less than flexible PV technologies of similar specific power. This performance/cost “sweet spot” was attained through NREL’s unique solutions to two previously unsolved problems. Specifically, they produced a stable, high-performance wide-bandgap perovskite cell, and then created a recombination layer that offers protection during cell processing and provides an effective optical and electrical connection between the two main layers in the tandem. Combining these technological solutions increased the efficiency of all-perovskite tandems by 30% while exhibiting high voltage and superior stability. As this all-perovskite tandem technology matures, its high-throughput production may accelerate the clean-energy transition as it enables additional applications that include portable/wearable power, building-integrated PV, and rooftop and utility-scale arrays.

Flexible_all-perovskite_tandem_closeup

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