Blue-Emitting Halide Perovskite Crystal (IMAGE) University of California - Berkeley Caption Blue-emitting halide perovskite crystal (n3 structure). Credit Peidong Yang, UC Berkeley 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.