Spintronic LED Using Perovskite (IMAGE) University of Utah Caption These are the wavelengths of light emitted from the spintronic LED. The inset shows the green light from the device. Credit University of Utah 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.