PEC CELL (IMAGE) Arizona State University Caption Image of the experimental photoelectrosynthetic cell described in the new study. Technologies of this kind combine light-gathering semiconductors and catalytic materials capable of chemical reactions that produce clean fuel. Credit Biodesign Institute at Arizona State University 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.