Perovskite Solar Cell Prototype (image) Ecole Polytechnique Fédérale de Lausanne Share Print E-Mail Caption This is a Perovskite solar cell prototype. Credit Alain Herzog / EPFL Usage Restrictions Copyright mention. 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.