Mike Scarpulla, University of Utah (IMAGE) University of Utah Caption University of Utah materials science and engineering associate professor Mike Scarpulla stands next to a solar panel made of the compound semiconductor, cadmium telluride. Scarpulla along with Kirstin Alberi of the National Renewable Energy Laboratory have developed a theory that adding light during the manufacturing of semiconductors can reduce defects in the materials, leading to more efficient solar cells and better LEDs. Credit University of Utah College of Engineering 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.