Perovskits solar cells have gone from nothing to 23% efficiency in a decade, but they are fragile in air. Now researchers at the US Department of Energy’s National Renewable Energy Laboratory (NREL) have made perovskite cells that, without protective encapsulation, retain 88% (+/-4%) of their 12.2% starting efficiency after 1,000 hours exposure to air, moisture ...

This story continues at Updated: Perovskite solar cells that lasts in air

Or just read more coverage at Electronics Weekly