SOLAR 2 (IMAGE) Rice University Caption Rice University graduate student Siraj Sidhik prepares to spin-coat a substrate with a compound that solidifies into a 2D perovskite. Rice engineers have found the perovskite shows promise for efficient, robust solar cells. Credit Jeff Fitlow/Rice University Usage Restrictions None License Original 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.