Perovskite 2 (IMAGE) Rice University Caption A sample all-inorganic perovskite solar cell is a step toward commercial use, according to scientists at Rice University. Their discovery of a way to quench defects in cesium-lead-iodide solar cells allowed them to preserve the material's band gap, a critical property in solar cell efficiency. Credit Jeff Fitlow/Rice University 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.