A microscopic analysis of perovskite solar cells reveals new insight into how the devices degrade – information necessary for moving the technology closer to commercialization.   The research was conducted by scientists at the Department of Energy’s National Renewable Energy Laboratory (NREL) and at the University of Texas at Austin and was published in Nature Communications.   The paper, “Impact of Grain Boundaries on Efficiency and Stability of Organic-Inorganic Trihalide Perovskites,” out...