CsPbBr3 perovskite crystal (IMAGE) DOE/Argonne National Laboratory Caption Image of CsPbBr3 perovskite crystal used in the experiments. Researchers at Argonne's Materials Science division and Northwestern University grew the large, centimeter-scale crystals required for the neutron measurements. Credit (Image by Argonne National Laboratory.) Usage Restrictions None 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.