Perovskite Thin Films (IMAGE) Linköping University Caption The resulting devices give near-infrared LEDs with a quantum efficiency of 19.6%. Credit Charlotte Perhammar Usage Restrictions In connection with news from LiU 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.