Perovskite solar cells (IMAGE) ARC Centre of Excellence in Exciton Science Caption Solar cells created using the new mechanism displaying less degradation under long term exposure to heat and light Credit Oxford University Usage Restrictions For use with this story only License Original 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.