Cooling, Time in the Dark Preserve Perovskite Solar Power (image) DOE/Los Alamos National Laboratory Share Print E-Mail Caption Photo-degradation under sunlight and self-healing in the dark of the photocurrent in organometallic halide perovskite solar cells (top). Illustration of the light activation of meta-stable trap states during photo-degradation, and curing of these traps during self-healing (bottom). Credit Los Alamos National Laboratory Usage Restrictions None 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.