Wafers (IMAGE) Penn State Caption Topographical view of the surface of the perovskite layer (l) and electrical current image of the same layer showing the conductive edges. Credit Shashank Priya lab, Penn State Usage Restrictions non commercial use only 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.