Hadi Afshari (IMAGE) University of Oklahoma Caption University of Oklahoma graduate student, Hadi Afshari, measuring next-generation solar cells on the solar simulator in the Sellers Lab. Ian Sellers is the lead on a new grant to develop ultra-high-efficiency solar cells. Credit Hadi Afshari, Sellers Lab, University of Oklahoma Usage Restrictions None License Original 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.