Halide Perovskite (IMAGE) Rensselaer Polytechnic Institute Caption An electron's lifetime can be evaluated from analyzing the green illuminating spot on perovskite crystals featured by the perpendicular ridges in the figure. Credit Rensselaer Polytechnic Institute 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.