Perovskite Imaging (IMAGE) University of Washington Caption UW researchers used microscopy to identify inefficient regions in perovskite materials used in solar cells, as evidenced by dark areas in C. Credit University of Washington Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.