Perovskite Solar Cells in the Lab (image) Ecole Polytechnique Fédérale de Lausanne Share Print E-Mail Caption Perovskite solar cells in the lab. Credit Wolfgang Tress (EPFL) Usage Restrictions Media purposes only. Commercial usage restricted; by permission only. Share Print E-Mail 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.