Figure 1. H<sup>-</sup>-doped BaSn<sub>0.7</sub>Y<sub>0.3</sub>O<sub>3-δ</sub> (IMAGE) Tokyo Institute of Technology Caption A cheaper perovskite-based semiconductor material that is free of toxic lead and can absorb a wide range of visible light with potential photofunctional applications. Credit Chemistry of Materials 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.