29 Sep '16, 5pm

Perovskites Become More Stable

Solar cells based on perovskite crystals have made unparalleled advances in performance in the past decade, but most research on these devices has neglected the question of how stable they might be outdoors for long periods of time. Now two research groups have come up with different ways to improve perovskite solar cell stability, findings detailed in two papers in the journal Science . One approach added rubidium cations to perovskite. "We believe this may help to relax lattice strain, resulting in a more defect-free overall crystal," says Michael Saliba, lead author of that study and a solar cell researcher at the Swiss Federal Institute of Technology in Lausanne. The resulting devices reached conversion efficiencies of up to 21.6 percent. In addition, "[W]e measure some of the highest open-circuit voltages for any recorded solar cell material, meaning that we are very ...

Full article: http://spectrum.ieee.org/energywise/green-tech/solar/pero...

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Perovskites Become More Stable

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Solar cells based on perovskite crystals have made unparalleled advances in performance in the past decade, but most resea...

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