Pei Dong, Rice University (image) Rice University Caption Pei Dong, a graduate student at Rice University, holds a lab-built solar cell that combines a carbon nanotube current collector and a sulfide-based electrolyte. The combination could make such solar cells more efficient and less expensive than current dye-sensitized units. Credit Jeff Fitlow/Rice University Usage Restrictions None 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.